Publications de l'équipe Traitement des eaux et déchets
2024
Heni Dallagi, Nassim Ait-Mouheb, Audrey Soric, Olivier Boiron. Simulation of the flow characteristics of a labyrinth milli-channel used in drip irrigation. Biosystems Engineering, 2024, 239, pp.114-129. ⟨10.1016/j.biosystemseng.2024.02.004⟩. ⟨hal-04479285⟩ Plus de détails...
Water scarcity is a global concern, with irrigation of food crops contributing significantly to freshwater depletion. Drip irrigation technology reduces water consumption but faces issues like clogging in narrow discharge sections, diminishing efficiency, and increasing costs. Accurate prediction of flow characteristics and understanding pa- rameters affecting biofilm growth and particle deposition is crucial for effective anti-clogging strategies. Computational fluid dynamics (CFD) using turbulence models can be a valuable tool. This study evaluated the accuracy and efficiency of different turbulence models (standard k-ε, Reynolds Stress Model, and Large Eddy Simulation) in predicting the flow characteristics of a commercial emitter in a drip irrigation system. Results showed the standard k-ε model as a preferred choice for simulating mean flow characteristics and emitter discharge due to its balance between accuracy and computational efficiency. However, the Large Eddy Simu- lation model provided the most accurate results, considering the emitter discharge, unsteady flow behavior, wall shear stress distribution, and oscillatory index, despite requiring more computational resources. This model is valuable for understanding hydrodynamic effects on emitter clogging. The study also investigated the impact of velocity fluctuations, wall shear stress, and oscillatory shear index on biofilm growth and deposition in the emitter. Low shear stress in inlet and return zones reduced self-cleaning ability, leading to particle and micro- organism attachment. Maintaining appropriate wall shear stress values in other regions proved crucial for improving anti-clogging ability. High oscillatory shear index values enhanced mass transfer, nutrient mixing, diffusion within the biofilm, and self-cleaning capacity. In summary, this study greatly enhances our under- standing of how flow dynamics and biofilm management impact drip irrigation systems. It provides practical insights for engineers and practitioners, aiding in the creation of more efficient and clog-resistant systems. By optimizing these dynamics and strategies, this research promotes sustainable water use in agriculture, while also minimizing maintenance costs and maximizing crop yields.
Heni Dallagi, Nassim Ait-Mouheb, Audrey Soric, Olivier Boiron. Simulation of the flow characteristics of a labyrinth milli-channel used in drip irrigation. Biosystems Engineering, 2024, 239, pp.114-129. ⟨10.1016/j.biosystemseng.2024.02.004⟩. ⟨hal-04479285⟩
Emilie Gout, Fatimatou Toure Lo, Mathias Monnot, Olivier Boutin, Pierre Vanloot, et al.. Coupling membrane processes with wet air oxidation for the remediation of industrial effluents. Chemical Engineering Journal, 2023, 472, pp.144937. ⟨10.1016/j.cej.2023.144937⟩. ⟨hal-04202142⟩ Plus de détails...
Emilie Gout, Fatimatou Toure Lo, Mathias Monnot, Olivier Boutin, Pierre Vanloot, et al.. Coupling membrane processes with wet air oxidation for the remediation of industrial effluents. Chemical Engineering Journal, 2023, 472, pp.144937. ⟨10.1016/j.cej.2023.144937⟩. ⟨hal-04202142⟩
Gautier Hypolite, Olivier Boutin, Sandrine Del Sole, Jean-François Cloarec, Jean-Henry Ferrasse. Evaluation of a water network’s energy potential in dynamic operation. Energy, 2023, 271, pp.127066. ⟨10.1016/j.energy.2023.127066⟩. ⟨hal-04504325⟩ Plus de détails...
To address the challenges of the energy transition, reducing consumption and optimizing energy production is crucial for all industrial sectors. In the future, water issues will be as important as energy issues, making the optimization of water supply systems critical. The water sector represents large energy consumption for pumping and heating. In regards to this consumption, water systems have a great potential for energy recovery through hydroelectric production or thermal energy recovery. This article aims to quantify the energy potential of water supply systems, which has not been well understood until now. The energy potential of these systems encompasses hydropower recovery and thermal potential, including heat recovery and cold recovery. For that, a method is developed to estimate this potential, including the recoverable power, its location, and its temporal variation. The method can be used for hydroelectricity production, as well as for heat and cold recovery. For a whole year, the results indicate a hydraulic potential of 15 MWh.km−1.year−1, and respectively 1650 MWh.km−1 .year−1 for heat recovery and 766 MWh.km−1.year−1 for cold recovery.
Gautier Hypolite, Olivier Boutin, Sandrine Del Sole, Jean-François Cloarec, Jean-Henry Ferrasse. Evaluation of a water network’s energy potential in dynamic operation. Energy, 2023, 271, pp.127066. ⟨10.1016/j.energy.2023.127066⟩. ⟨hal-04504325⟩
Tetyana Kyrpel, Vita Saska, Anne de Poulpiquet, Mathieu Luglia, Audrey Soric, et al.. Hydrogenase-based electrode for hydrogen sensing in a fermentation bioreactor. Biosensors and Bioelectronics, 2023, 225, pp.115106. ⟨10.1016/j.bios.2023.115106⟩. ⟨hal-03963086⟩ Plus de détails...
The hydrogen-based economy will require not only sustainable hydrogen production but also sensitive and cheap hydrogen sensors. Commercially available H2 sensors are limited by either use of noble metals or elevated temperatures. In nature, hydrogenase enzymes present high affinity and selectivity for hydrogen, while being able to operate in mild conditions. This study aims at evaluating the performance of an electrochemical sensor based on carbon nanomaterials with immobilised hydrogenase from the hyperthermophilic bacterium Aquifex aeolicus for H2 detection. The effect of various parameters, including the surface chemistry, dispersion degree and amount of deposited carbon nanotubes, enzyme concentration, temperature and pH on the H2 oxidation are investigated. Although the highest catalytic response is obtained at a temperature around 60 °C, a noticeable current can be obtained at room temperature with a low amount of protein less than 1 µM. An original pulse-strategy to ensure H2 diffusion to the bioelectrode allows to reach H2 sensitivity of 4 µA cm-2 per % H2 and a linear range between 1-20 %. Sustainable hydrogen was then produced through dark fermentation performed by a synthetic bacterial consortium in an up-flow anaerobic packed-bed bioreactor. Thanks to the outstanding properties of the A. aeolicus hydrogenase, the biosensor was demonstrated to be quite insensitive to CO2 and H2S produced as the main co-products of the bioreactor. Finally, the bioelectrode was used for the in situ measurement of H2 produced in the bioreactor in steady-state.
Tetyana Kyrpel, Vita Saska, Anne de Poulpiquet, Mathieu Luglia, Audrey Soric, et al.. Hydrogenase-based electrode for hydrogen sensing in a fermentation bioreactor. Biosensors and Bioelectronics, 2023, 225, pp.115106. ⟨10.1016/j.bios.2023.115106⟩. ⟨hal-03963086⟩
Kelly Ohanessian, Cristian Barca, Audrey Soric, Jean-Henry Ferrasse, Olivier Boutin. Simulation of Alternative Process Schemes for Hydrofluoric and Phosphoric Acid Stream Treatment and Nutrient Recovery. Process Integration and Optimization for Sustainability, 2023, 7 (4), pp.831-845. ⟨10.1007/s41660-023-00326-x⟩. ⟨hal-04504375⟩ Plus de détails...
Hydrofluoric and phosphoric acid streams produced by the microelectronic industry usually present high flow and high contents of phosphorus, nitrogen, fluorine, and organic carbon. This study aims at evaluating the efficiency and suitability of alternative process schemes for the treatment and valorization of hydrofluoric and phosphoric acid streams. A comparative approach is proposed, based on the simulation of different process schemes, each involving several steps of physicochemical and biological treatments. The main objectives are to compare (i) the treatment efficiency, (ii) the consumption of chemical reagents, and (iii) the recovery of high-value by-products (e.g. calcium fluoride, struvite, and hydroxyapatite), and hence to identify the most suitable process scheme. Furthermore, this study contributes to the development of chemical precipitation and bioconversion models that can be applied for further simulation studies on wastewater treatment processes. The results indicate that the use of calcium hydroxide (Ca(OH2)) as the only source of Ca2+ and OH− ions for the precipitation steps is a promising way to reduce the total consumption of chemical reagents while recovering high purity (> 98%) calcium fluoride and struvite. Moreover, the use of a membrane aerated biofilm reactor after the precipitation steps may further decrease organic carbon and nitrogen contents below 125 g COD.m−3 and 30 g N.m−3, thus allowing effluent discharge to natural waters. Overall, this study gives useful information for the development of innovative treatment processes, and it provides crucial data for the selection of the most promising alternative schemes.
Kelly Ohanessian, Cristian Barca, Audrey Soric, Jean-Henry Ferrasse, Olivier Boutin. Simulation of Alternative Process Schemes for Hydrofluoric and Phosphoric Acid Stream Treatment and Nutrient Recovery. Process Integration and Optimization for Sustainability, 2023, 7 (4), pp.831-845. ⟨10.1007/s41660-023-00326-x⟩. ⟨hal-04504375⟩
Journal: Process Integration and Optimization for Sustainability
Antonello Tangredi, Cristian Barca, Jean-Henry Ferrasse, Olivier Boutin. Effect of process parameters on phosphorus conversion pathways during hydrothermal treatment of sewage sludge: A review. Chemical Engineering Journal, 2023, 463, pp.142342. ⟨10.1016/j.cej.2023.142342⟩. ⟨hal-04303018⟩ Plus de détails...
Sewage sludge represents a renewable source of organic carbon and nutrients such as nitrogen (N), potassium (K), and phosphorus (P) that can be valorised through the recovery of energy carriers (e.g. biofuels) and fertilizers (N, K, and P precipitates). This review analyses>60 recent studies that have investigated P recovery potential from sewage sludge by hydrothermal processes. The effect of process parameters such as temperature, residence time, pressure, solid-to-liquid ratio, and addition of additives on P conversion pathways has been investigated by a critical discussion of the results published in the literature. Results show that temperature is the most influential parameter for P speciation and repartition: the increase in temperature appears to promote the increase in solid P recovery yield, the mineralization of organic P, and the conversion of non-apatitic P into apatitic P. The increase in reaction time has similar effects as temperature, but to a lesser extent. Solid P recovery yield and apatitic P fraction can be enhanced by increasing the medium alkalinity and by adding Ca-containing reactants. Non-apatitic P fraction can be increased by lower medium alkalinity, and by the addition of Fe-and Alcontaining reactants. The results of this review provide to researchers and practitioners in the field of sewage sludge management key elements for the best operation of hydrothermal reactors to improve the recovery of P and biofuels. Finally, some new research perspectives and technical challenges are proposed to improve the knowledge and the scaling up of the technology.
Antonello Tangredi, Cristian Barca, Jean-Henry Ferrasse, Olivier Boutin. Effect of process parameters on phosphorus conversion pathways during hydrothermal treatment of sewage sludge: A review. Chemical Engineering Journal, 2023, 463, pp.142342. ⟨10.1016/j.cej.2023.142342⟩. ⟨hal-04303018⟩
Cristian Barca, Matteo Magari, Hélène Miche, Pierre Hennebert. Effect of different wastewater composition on kinetics, capacities, and mechanisms of phosphorus sorption by carbonated bauxite residue. Journal of Environmental Chemical Engineering, 2022, 10 (6), pp.108922. ⟨10.1016/j.jece.2022.108922⟩. ⟨hal-03884024⟩ Plus de détails...
This study aims at evaluating the effect of different wastewater composition on kinetics, capacities, and mechanisms of P sorption by carbonated bauxite residues (CBR). A series of batch experiments was performed to investigate P sorption behaviors from solutions prepared with different aqueous matrices (deionized water, tap water, and real wastewater) and different initial P concentrations (from 10 to 200 mg P/L). Also, a series of sequential P extractions was performed to investigate P fractionation of CBR before and after its use in P sorption experiments, and hence to elucidate the main P removal mechanisms. The results indicate that initial P concentration is the most influential parameter controlling kinetics, capacities, and mechanisms of P removal in batch experiments. Kinetic constant of P sorption increases exponentially with decreasing initial P concentration below 100 mg P/L, thus indicating a faster achievement of P sorption equilibrium. Equilibrium P sorption capacities increase linearly from about 0.2 to about 3.9 mg P/g CBR with increasing initial P concentration from 10 to 200 mg P/L, thus indicating that P saturation of CBR was not reached. Ca phosphate precipitation is the main P removal mechanism at higher initial P concentrations (> 10 mg P/L), whereas phosphate adsorption on CBR surface becomes more relevant over the total amount of P removed at lower initial P concentrations. Overall, the findings of this study allow to evaluate kinetic constants, sorption capacities, and removal mechanisms under different operating scenarios, thus providing crucial information for the design and operation of P treatment units.
Cristian Barca, Matteo Magari, Hélène Miche, Pierre Hennebert. Effect of different wastewater composition on kinetics, capacities, and mechanisms of phosphorus sorption by carbonated bauxite residue. Journal of Environmental Chemical Engineering, 2022, 10 (6), pp.108922. ⟨10.1016/j.jece.2022.108922⟩. ⟨hal-03884024⟩
Journal: Journal of Environmental Chemical Engineering
Shumet Sharew, Ludovic Montastruc, Abubeker Yimam, Stéphane Négny, Jean-Henry Ferrasse. Alternative Energy Potential and Conversion Efficiency of Biomass into Target Biofuels: A Case Study in Ethiopian Sugar Industry- Wonji-Shoa. Biomass, 2022, 2 (4), pp.279-298. ⟨10.3390/biomass2040019⟩. ⟨hal-03936793⟩ Plus de détails...
Global energy security relies on fossil-based resources that are affiliated with the source of global warming, apart from punches of political and economic instabilities. Biomass is a promising alternative carbonaceous feedstock used for the production of clean energy that could have the potential to substitute for fossil fuels. This study aims to present a conceptual design that considers the criteria to identify the upper theoretical limits of biomass conversion, thus providing the potential approach to the conversion of three biomass (by-products: dry molasses, dry bagasse, and dry filter cake) through gasification, in order to contribute the biomass carbon-capturing by the model assessment of stoichiometric mass conversion and energy efficiency indicators into simple thermodynamic energy vectors, such as alcohols, alkanes, and syngas (a mixture of carbon monoxide and hydrogen). Modeling plays up the importance of stoichiometric efficiency of biomass conversion with the supply of oxygen and hydrogen. This realizes that the multi-product diversification of feedstock into syngas, hydrocarbons, and alcohol through integrated process schemes could have the potential to fill the energy gap and help to manage environmental load. In regard to biomass conversion results, the mass conversion and energy conversion efficiencies of dry bagasse have better conversion potential than molasses and F. cake (% mass conversion = 129 in syngas, 54.4 in alkane, and 43.4 in alcohol; % energy conversion = 94.3 in syngas and 93.3 in alkane and alcohol).
Shumet Sharew, Ludovic Montastruc, Abubeker Yimam, Stéphane Négny, Jean-Henry Ferrasse. Alternative Energy Potential and Conversion Efficiency of Biomass into Target Biofuels: A Case Study in Ethiopian Sugar Industry- Wonji-Shoa. Biomass, 2022, 2 (4), pp.279-298. ⟨10.3390/biomass2040019⟩. ⟨hal-03936793⟩
Jean-Henry Ferrasse, Nandeeta Neerunjun, Hubert Stahn. Intermittency and electricity retailing: An incomplete market approach. Mathematical Social Sciences, 2022, 120, pp.24-36. ⟨10.1016/j.mathsocsci.2022.09.001⟩. ⟨hal-03979827⟩ Plus de détails...
We analyze the integration of intermittent renewables-based technologies into an electricity mix comprising of conventional energy. Intermittency is modeled by a contingent electricity market and we introduce demand-side flexibility through the retailing structure. Retailers propose diversified electricity contracts at different prices, but in an insufficient number to cover intermittent production. These delivery contracts are modeled similarly to numeraire assets. We study the competitive equilibrium of the state-contingent wholesale electricity markets and the delivery contract markets. We also provide an analysis linking the delivery contracts to social welfare. Finally, we discuss the conditions under which changing the delivery contracts improve penetration of renewables and increases welfare. These provide useful insights for managing intermittency and achieving renewable capacity objectives.
Jean-Henry Ferrasse, Nandeeta Neerunjun, Hubert Stahn. Intermittency and electricity retailing: An incomplete market approach. Mathematical Social Sciences, 2022, 120, pp.24-36. ⟨10.1016/j.mathsocsci.2022.09.001⟩. ⟨hal-03979827⟩
Jean-Henry Ferrasse, Nandeeta Neerunjun, Hubert Stahn. Intermittency and electricity retailing: An incomplete market approach. Mathematical Social Sciences, 2022, 120, pp.24-36. ⟨10.1016/j.mathsocsci.2022.09.001⟩. ⟨hal-03979827⟩ Plus de détails...
We analyze the integration of intermittent renewables-based technologies into an electricity mix comprising of conventional energy. Intermittency is modeled by a contingent electricity market and we introduce demand-side flexibility through the retailing structure. Retailers propose diversified electricity contracts at different prices, but in an insufficient number to cover intermittent production. These delivery contracts are modeled similarly to numeraire assets. We study the competitive equilibrium of the state-contingent wholesale electricity markets and the delivery contract markets. We also provide an analysis linking the delivery contracts to social welfare. Finally, we discuss the conditions under which changing the delivery contracts improve penetration of renewables and increases welfare. These provide useful insights for managing intermittency and achieving renewable capacity objectives.
Jean-Henry Ferrasse, Nandeeta Neerunjun, Hubert Stahn. Intermittency and electricity retailing: An incomplete market approach. Mathematical Social Sciences, 2022, 120, pp.24-36. ⟨10.1016/j.mathsocsci.2022.09.001⟩. ⟨hal-03979827⟩
We analyze the integration of intermittent renewables-based technologies into an electricity mix comprising of conventional energy. Intermittency is modeled by a contingent electricity market and we introduce demand-side flexibility through the retailing structure. Retailers propose diversified electricity contracts at different prices, but in an insufficient number to cover intermittent production. These delivery contracts are modeled similarly to numeraire assets. We study the competitive equilibrium of the state-contingent wholesale electricity markets and the delivery contract markets. We also provide an analysis linking the delivery contracts to social welfare. Finally, we discuss the conditions under which changing the delivery contracts improve penetration of renewables and increases welfare. These provide useful insights for managing intermittency and achieving renewable capacity objectives.
Jean-Henry Ferrasse, Nandeeta Neerunjun, Hubert Stahn. Intermittency and electricity retailing: An incomplete market approach ✩. Mathematical Social Sciences, 2022, 120, pp.24-36. ⟨10.1016/j.mathsocsci.2022.09.001⟩. ⟨hal-04063845⟩
Valentina Segneri, Jean Henry Ferrasse, Antonio Trinca, Giorgio Vilardi. An Overview of Waste Gasification and Syngas Upgrading Processes. Energies, 2022, 15 (17), pp.6391. ⟨10.3390/en15176391⟩. ⟨hal-03936798v2⟩ Plus de détails...
The increasing attention towards climate change and greenhouse gas emissions makes the exploitation of renewable energy sources one of the key pathways for sustainable power generation or chemical production [...]
Valentina Segneri, Jean Henry Ferrasse, Antonio Trinca, Giorgio Vilardi. An Overview of Waste Gasification and Syngas Upgrading Processes. Energies, 2022, 15 (17), pp.6391. ⟨10.3390/en15176391⟩. ⟨hal-03936798v2⟩
Valentina Segneri, Jean Henry Ferrasse, Antonio Trinca, Giorgio Vilardi. An Overview of Waste Gasification and Syngas Upgrading Processes. Energies, 2022, 15 (17), pp.6391. ⟨10.3390/en15176391⟩. ⟨hal-03936798v1⟩ Plus de détails...
The increasing attention towards climate change and greenhouse gas emissions makes the exploitation of renewable energy sources one of the key pathways for sustainable power generation or chemical production [...]
Valentina Segneri, Jean Henry Ferrasse, Antonio Trinca, Giorgio Vilardi. An Overview of Waste Gasification and Syngas Upgrading Processes. Energies, 2022, 15 (17), pp.6391. ⟨10.3390/en15176391⟩. ⟨hal-03936798v1⟩
Emilie Gout, Mathias Monnot, Olivier Boutin, Pierre Vanloot, Magalie Claeys-Bruno, et al.. Assessment and optimization of wet air oxidation for treatment of landfill leachate concentrated with reverse osmosis. Process Safety and Environmental Protection, 2022, 162, pp.765-774. ⟨10.1016/j.psep.2022.04.046⟩. ⟨hal-04063869⟩ Plus de détails...
Sanitary landfilling is one of the most common ways to eliminate solid municipal/urban wastes. Despite many advantages, this method leads to the generation of contaminated leachates that remains an unavoidable consequence of the waste disposal. Membrane technologies, such as reverse osmosis, are frequently used for leachate treatment as they generate good quality permeate with a high recovery rate. However, their primary drawbacks are fouling, eliminated by chemical wash, and the production of highly polluted concentrates. This paper aims to assess and optimize the use of wet air oxidation to treat reverse osmosis concentrates in terms of bio-refractory organic pollutants removal. Wet air oxidation was performed at elevated pressure and temperature using experimental design methodology with a 70% oxygen excess for 6 h in a stirred batch reactor. The effect of operating conditions was investigated with an experimental design where 3 factors (two quantitative ones: pressure and temperature and a qualitative one: seasonality of the effluent) have been considered. The chemical oxygen demand and the total organic carbon removals increased with the increase of temperature (from 200 °C to 300 °C) and no effect of the pressure was observed within the range 18-21 MPa. Wet air oxidation could achieve up to 99% removals for chemical oxygen demand and total organic carbon for the seasonality of October. Experiments also showed that increasing the initial pollutant concentration increased initial kinetic rates. Finally, models were established to calculate and predict pollution removal rate and its kinetic, in the domain of study.
Emilie Gout, Mathias Monnot, Olivier Boutin, Pierre Vanloot, Magalie Claeys-Bruno, et al.. Assessment and optimization of wet air oxidation for treatment of landfill leachate concentrated with reverse osmosis. Process Safety and Environmental Protection, 2022, 162, pp.765-774. ⟨10.1016/j.psep.2022.04.046⟩. ⟨hal-04063869⟩
Journal: Process Safety and Environmental Protection
Jiupeng Du, Nelson Ibaseta, Pierrette Guichardon. Characterization of polyurea microcapsules synthesized with an isocyanate of low toxicity and eco-friendly esters via microfluidics: Shape, shell thickness, morphology and encapsulation efficiency. Chemical Engineering Research and Design, 2022, 182, pp.256-272. ⟨10.1016/j.cherd.2022.03.026⟩. ⟨hal-04063865⟩ Plus de détails...
There are some studies on the synthesis of polyurea microcapsules. However, there is hardly a case where both green solvents and non-toxic isocyanates are used, especially in microfluidics. In this work, an environmentally friendly chemical system of interfacial polymerization (isocyanate: HDB-LV; solvent: octyl salicylate or dibutyl adipate) is tested for the first time to produce polyurea microcapsules. The size of microcapsules is calibrated at 78 μm by microfluidics to quantitatively analyze the relationships among shell thickness, encapsulation efficiency and isocyanate concentrations. The influences of solvent types and reactant concentrations on the shape, morphology and shell thickness of microcapsules are studied. Esters with low water miscibility and low amine concentrations (lower reaction rate) are crucial for the formation of spherical microcapsules. An ester with high water miscibility can diffuse into the continuous phase during encapsulation, which results in broken microcapsules. A high concentration of amine can probably cause cross-linking not only at the interface but also inside the droplet template, which leads to microcapsule deformation. A linear relationship is observed between the shell thickness of microcapsules and the isocyanate concentration. Overall, a high encapsulation efficiency (more than 90%) for octyl salicylate is achieved with polyurea microcapsules.
Jiupeng Du, Nelson Ibaseta, Pierrette Guichardon. Characterization of polyurea microcapsules synthesized with an isocyanate of low toxicity and eco-friendly esters via microfluidics: Shape, shell thickness, morphology and encapsulation efficiency. Chemical Engineering Research and Design, 2022, 182, pp.256-272. ⟨10.1016/j.cherd.2022.03.026⟩. ⟨hal-04063865⟩
Cristian Barca, Matteo Magari, Hélène Miche, Pierre Hennebert. Effect of different wastewater composition on kinetics, capacities, and mechanisms of phosphorus sorption by carbonated bauxite residue. Journal of Environmental Chemical Engineering, 2022, 10 (6), pp.108922. ⟨10.1016/j.jece.2022.108922⟩. ⟨hal-04063830⟩ Plus de détails...
This study aims at evaluating the effect of different wastewater composition on kinetics, capacities, and mechanisms of P sorption by carbonated bauxite residues (CBR). A series of batch experiments was performed to investigate P sorption behaviors from solutions prepared with different aqueous matrices (deionized water, tap water, and real wastewater) and different initial P concentrations (from 10 to 200 mg P/L). Also, a series of sequential P extractions was performed to investigate P fractionation of CBR before and after its use in P sorption experiments, and hence to elucidate the main P removal mechanisms. The results indicate that initial P concentration is the most influential parameter controlling kinetics, capacities, and mechanisms of P removal in batch experiments. Kinetic constant of P sorption increases exponentially with decreasing initial P concentration below 100 mg P/L, thus indicating a faster achievement of P sorption equilibrium. Equilibrium P sorption capacities increase linearly from about 0.2 to about 3.9 mg P/g CBR with increasing initial P concentration from 10 to 200 mg P/L, thus indicating that P saturation of CBR was not reached. Ca phosphate precipitation is the main P removal mechanism at higher initial P concentrations (> 10 mg P/L), whereas phosphate adsorption on CBR surface becomes more relevant over the total amount of P removed at lower initial P concentrations. Overall, the findings of this study allow to evaluate kinetic constants, sorption capacities, and removal mechanisms under different operating scenarios, thus providing crucial information for the design and operation of P treatment units.
Cristian Barca, Matteo Magari, Hélène Miche, Pierre Hennebert. Effect of different wastewater composition on kinetics, capacities, and mechanisms of phosphorus sorption by carbonated bauxite residue. Journal of Environmental Chemical Engineering, 2022, 10 (6), pp.108922. ⟨10.1016/j.jece.2022.108922⟩. ⟨hal-04063830⟩
Journal: Journal of Environmental Chemical Engineering
Pierrette Guichardon, Carlos Baqueiro, Nelson Ibaseta. Villermaux–Dushman Test of Micromixing Characterization Revisited: Kinetic Effects of Acid Choice and Ionic Strength. Industrial and engineering chemistry research, 2021, 60 (50), pp.18268-18282. ⟨10.1021/acs.iecr.1c03208⟩. ⟨hal-03514628⟩ Plus de détails...
The well-known Villermaux-Dushman system is nowadays widely used for examining the micromixing efficiency either in batch or continuous intensified reactors. However, a bibliographic review shows that kinetic data are too scattered for a reliable determination of the micromixing times. The Dushman reaction kinetics is then reexamined with the use of sulfuric and perchloric acids. The results confirm the fifth-order rate law. More precisely, the I-, H+, and IO3- dependence orders on the rate law are, respectively, 2, 2, and 1, under any condition. To be more consistent with the reactant concentrations used in the Villermaux-Dushman test, we extend their studied range, namely, 1.6 x 10(-3) M <= [I-](0) <= 1.6 x 10(-2) M, 1.2 x 10(-4) M <= [H+](0) <= 1.57 x 10(-2) M, and 4 x 10(-5) M <= [IO3-] <= 2.1 X 10(-4) M. The ionic strength varies up to 2 M. The experimental results show that the rate constant is still ionic-strength-dependent. The results obtained with sulfuric and perchloric acids are found to be consistent and in relatively good agreement at small ionic strengths (mu < 0.1 M) only. At a higher ionic strength, the use of sulfuric acid requires sustained attention to the constant of the second dissociation equilibrium. The nonideal solution behavior raising at a high ionic strength makes its estimation deeply sensitive.
Pierrette Guichardon, Carlos Baqueiro, Nelson Ibaseta. Villermaux–Dushman Test of Micromixing Characterization Revisited: Kinetic Effects of Acid Choice and Ionic Strength. Industrial and engineering chemistry research, 2021, 60 (50), pp.18268-18282. ⟨10.1021/acs.iecr.1c03208⟩. ⟨hal-03514628⟩
Journal: Industrial and engineering chemistry research
Pierrette Guichardon, Carlos Baqueiro, Nelson Ibaseta. Villermaux–Dushman Test of Micromixing Characterization Revisited: Kinetic Effects of Acid Choice and Ionic Strength. Industrial and engineering chemistry research, 2021, 60 (50), pp.18268-18282. ⟨10.1021/acs.iecr.1c03208⟩. ⟨hal-03597451⟩ Plus de détails...
The well-known Villermaux-Dushman system is nowadays widely used for examining the micromixing efficiency either in batch or continuous intensified reactors. However, a bibliographic review shows that kinetic data are too scattered for a reliable determination of the micromixing times. The Dushman reaction kinetics is then reexamined with the use of sulfuric and perchloric acids. The results confirm the fifth-order rate law. More precisely, the I-, H+, and IO3- dependence orders on the rate law are, respectively, 2, 2, and 1, under any condition. To be more consistent with the reactant concentrations used in the Villermaux-Dushman test, we extend their studied range, namely, 1.6 x 10(-3) M <= [I-](0) <= 1.6 x 10(-2) M, 1.2 x 10(-4) M <= [H+](0) <= 1.57 x 10(-2) M, and 4 x 10(-5) M <= [IO3-] <= 2.1 X 10(-4) M. The ionic strength varies up to 2 M. The experimental results show that the rate constant is still ionic-strength-dependent. The results obtained with sulfuric and perchloric acids are found to be consistent and in relatively good agreement at small ionic strengths (mu < 0.1 M) only. At a higher ionic strength, the use of sulfuric acid requires sustained attention to the constant of the second dissociation equilibrium. The nonideal solution behavior raising at a high ionic strength makes its estimation deeply sensitive.
Pierrette Guichardon, Carlos Baqueiro, Nelson Ibaseta. Villermaux–Dushman Test of Micromixing Characterization Revisited: Kinetic Effects of Acid Choice and Ionic Strength. Industrial and engineering chemistry research, 2021, 60 (50), pp.18268-18282. ⟨10.1021/acs.iecr.1c03208⟩. ⟨hal-03597451⟩
Journal: Industrial and engineering chemistry research
Nicolas Lusinier, Isabelle Seyssiecq, Cecilia Sambusiti, Matthieu Jacob, Nicolas Lesage, et al.. Application of Moving Bed Biofilm Reactor and Fixed Bed Hybrid Biological Reactor for Oilfield Produced Water Treatment: Influence of Total Dissolved Solids Concentration. Energies, 2021, 14 (21), pp.7297. ⟨10.3390/en14217297⟩. ⟨hal-03413732⟩ Plus de détails...
This experimental paper deals with the development of a hybrid biological reactor for the treatment of a synthetic oilfield produced water under an increase in total dissolved solids (TDS) concentration. To comply with strengthening regulations concerning produced water discharge and peculiar produced water compositions, a moving bed biofilm reactor (MBBR) consisting in a combination of free activated sludge and moving biofilm supports was compared to a fixed bed hybrid biological reactor (FBHBR) consisting in a combination of free activated sludge and a fixed biofilm support. After a 216 days experimental period, the MBBR and the FBHBR were efficient to treat a synthetic produced water with chemical oxygen demand (COD) removal rate above 90% under an increase in TDS concentrations from 1.5 to 8 g·L−1. Ecotoxicity measurements on freshwater and marine microorganisms revealed an absence of toxicity on treated waters. A decrease in bacterial diversity indices with respect to the inoculum was observed in both bioreactors. This suggests that the increase in TDS concentrations caused the predominance of a low number of bacterial species.
Nicolas Lusinier, Isabelle Seyssiecq, Cecilia Sambusiti, Matthieu Jacob, Nicolas Lesage, et al.. Application of Moving Bed Biofilm Reactor and Fixed Bed Hybrid Biological Reactor for Oilfield Produced Water Treatment: Influence of Total Dissolved Solids Concentration. Energies, 2021, 14 (21), pp.7297. ⟨10.3390/en14217297⟩. ⟨hal-03413732⟩
Francisco Mendez-Alva, Hélène Cervo, Gorazd Krese, Greet van Eetvelde. Industrial symbiosis profiles in energy-intensive industries: Sectoral insights from open databases. Journal of Cleaner Production, 2021, 314, pp.128031. ⟨10.1016/j.jclepro.2021.128031⟩. ⟨hal-03597672⟩ Plus de détails...
Process industries are the foundation of the European economy, transforming raw materials into building blocks for strategic products and applications in today's society. Such industries range from steel, cement, or minerals to chemicals such as lubricants for wind turbines and polymers that prevent waste in logistic supply chains. The downside of this foundation industry is its high environmental impact regarding emissions, and intensive use of energy and resources. One of the key strategies to address such challenges is industrial symbiosis: various industries establish collective efforts to find value while transitioning to a more circular economy. This paper presents an exploratory analysis of databases on IS case studies. We used the European standard classification for economic activities (NACE) to draw industrial sector profiles for the most relevant energy-intensive industries: chemicals, steel, and cement, coupled with urban synergies. The majority of the synergies includes the chemicals sector with most commonly shared streams being energy, water, and carbon dioxide. IS cases are ranked in terms of frequency, then classified in topical groups and finally, the sustainability impact of the different categories is discussed. The outcome is a methodology to frame and assess industrial symbiosis case collections useful for future exploring and exploiting circularity projects in public and private organisations.
Francisco Mendez-Alva, Hélène Cervo, Gorazd Krese, Greet van Eetvelde. Industrial symbiosis profiles in energy-intensive industries: Sectoral insights from open databases. Journal of Cleaner Production, 2021, 314, pp.128031. ⟨10.1016/j.jclepro.2021.128031⟩. ⟨hal-03597672⟩
Francisco Mendez-Alva, Hélène Cervo, Gorazd Krese, Greet van Eetvelde. Industrial symbiosis profiles in energy-intensive industries: Sectoral insights from open databases. Journal of Cleaner Production, 2021, 314, pp.128031. ⟨10.1016/j.jclepro.2021.128031⟩. ⟨hal-03514699⟩ Plus de détails...
Process industries are the foundation of the European economy, transforming raw materials into building blocks for strategic products and applications in today's society. Such industries range from steel, cement, or minerals to chemicals such as lubricants for wind turbines and polymers that prevent waste in logistic supply chains. The downside of this foundation industry is its high environmental impact regarding emissions, and intensive use of energy and resources. One of the key strategies to address such challenges is industrial symbiosis: various industries establish collective efforts to find value while transitioning to a more circular economy. This paper presents an exploratory analysis of databases on IS case studies. We used the European standard classification for economic activities (NACE) to draw industrial sector profiles for the most relevant energy-intensive industries: chemicals, steel, and cement, coupled with urban synergies. The majority of the synergies includes the chemicals sector with most commonly shared streams being energy, water, and carbon dioxide. IS cases are ranked in terms of frequency, then classified in topical groups and finally, the sustainability impact of the different categories is discussed. The outcome is a methodology to frame and assess industrial symbiosis case collections useful for future exploring and exploiting circularity projects in public and private organisations.
Francisco Mendez-Alva, Hélène Cervo, Gorazd Krese, Greet van Eetvelde. Industrial symbiosis profiles in energy-intensive industries: Sectoral insights from open databases. Journal of Cleaner Production, 2021, 314, pp.128031. ⟨10.1016/j.jclepro.2021.128031⟩. ⟨hal-03514699⟩
Gautier Hypolite, Jean-Henry Ferrasse, Olivier Boutin, Sandrine del Sole, Jean-François Cloarec. Dynamic modeling of water temperature and flow in large water system. Applied Thermal Engineering, 2021, 196, pp.117261. ⟨10.1016/j.applthermaleng.2021.117261⟩. ⟨hal-03597512⟩ Plus de détails...
Thermal energy counts for a large part of the total energy consumption. To reduce fossil fuel consumption for heat and cold generation, different low temperature heat sources have been considered. Water networks have been considered as a large amount of water flow through it. To measure the thermal potential of the system, this paper provides a method in unsteady state to determine water temperature and flow in large water systems made of buried pipes. The model has been applied to a raw water supply system made up of 5000 km of piping and carrying 200 million m3 annually situated in the south of France. Water temperature is calculated considering heat exchange and the spatial specificities of the network (diameter of the pipes, depth, type of soil ...). Soil and water temperature measurements have been made to validate the model values. The model can predict water flow and temperature according to time with good accuracy: maximal error of 10% on the flow is obtained, the root mean square error on the calculated temperature is 0.84 circle C, and the correlation coefficient between the calculated and the measured temperature values is 0.98. The impact of adding several heat (or cold) injections in the system has been evaluated with the model. After a 2 MW heat exchange, the water temperature is increased by at least 1circC for 10 km downstream the exchange.
Gautier Hypolite, Jean-Henry Ferrasse, Olivier Boutin, Sandrine del Sole, Jean-François Cloarec. Dynamic modeling of water temperature and flow in large water system. Applied Thermal Engineering, 2021, 196, pp.117261. ⟨10.1016/j.applthermaleng.2021.117261⟩. ⟨hal-03597512⟩
Gautier Hypolite, Jean-Henry Ferrasse, Olivier Boutin, Sandrine del Sole, Jean-François Cloarec. Dynamic modeling of water temperature and flow in large water system. Applied Thermal Engineering, 2021, 196, pp.117261. ⟨10.1016/j.applthermaleng.2021.117261⟩. ⟨hal-03515146⟩ Plus de détails...
Thermal energy counts for a large part of the total energy consumption. To reduce fossil fuel consumption for heat and cold generation, different low temperature heat sources have been considered. Water networks have been considered as a large amount of water flow through it. To measure the thermal potential of the system, this paper provides a method in unsteady state to determine water temperature and flow in large water systems made of buried pipes. The model has been applied to a raw water supply system made up of 5000 km of piping and carrying 200 million m3 annually situated in the south of France. Water temperature is calculated considering heat exchange and the spatial specificities of the network (diameter of the pipes, depth, type of soil ...). Soil and water temperature measurements have been made to validate the model values. The model can predict water flow and temperature according to time with good accuracy: maximal error of 10% on the flow is obtained, the root mean square error on the calculated temperature is 0.84 circle C, and the correlation coefficient between the calculated and the measured temperature values is 0.98. The impact of adding several heat (or cold) injections in the system has been evaluated with the model. After a 2 MW heat exchange, the water temperature is increased by at least 1circC for 10 km downstream the exchange.
Gautier Hypolite, Jean-Henry Ferrasse, Olivier Boutin, Sandrine del Sole, Jean-François Cloarec. Dynamic modeling of water temperature and flow in large water system. Applied Thermal Engineering, 2021, 196, pp.117261. ⟨10.1016/j.applthermaleng.2021.117261⟩. ⟨hal-03515146⟩
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Bubble rising velocity and bubble size distribution in columns at high pressure and temperature: From lab scale experiments to design parameters. Chemical Engineering Research and Design, 2021, 173, pp.108-118. ⟨10.1016/j.cherd.2021.07.003⟩. ⟨hal-03597596⟩ Plus de détails...
The design of bubble column for industrial applications is well known under near ambient pressure and temperature conditions, contrary to high pressure and temperature conditions. Accurate data on the evolution and behaviour of the bubbles is proposed as a basis for the evaluation of the surface area developed in the column and further design of such reactor. Two columns are used for the experiments: a small column (8 mL) with a total visualisation of the flow, and a bigger one (1 L), necessary for the scale up. Main results show that the influence of pressure and temperature are significant on the behaviour of bubbles and bubble size distribution and must be characterized and considered for the design of the columns in such conditions. The results allow the determination of two correlations: one for the bubble diameter and the other one for the bubble rise velocity, considering different parameters, and especially the superficial gas velocity in saturated conditions. These correlations are a basis to determine mass transfer correlations for the design of bubble column at high pressure and temperature conditions. (c) 2021 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Bubble rising velocity and bubble size distribution in columns at high pressure and temperature: From lab scale experiments to design parameters. Chemical Engineering Research and Design, 2021, 173, pp.108-118. ⟨10.1016/j.cherd.2021.07.003⟩. ⟨hal-03597596⟩
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Bubble rising velocity and bubble size distribution in columns at high pressure and temperature: From lab scale experiments to design parameters. Chemical Engineering Research and Design, 2021, 173, pp.108-118. ⟨10.1016/j.cherd.2021.07.003⟩. ⟨hal-03515133⟩ Plus de détails...
The design of bubble column for industrial applications is well known under near ambient pressure and temperature conditions, contrary to high pressure and temperature conditions. Accurate data on the evolution and behaviour of the bubbles is proposed as a basis for the evaluation of the surface area developed in the column and further design of such reactor. Two columns are used for the experiments: a small column (8 mL) with a total visualisation of the flow, and a bigger one (1 L), necessary for the scale up. Main results show that the influence of pressure and temperature are significant on the behaviour of bubbles and bubble size distribution and must be characterized and considered for the design of the columns in such conditions. The results allow the determination of two correlations: one for the bubble diameter and the other one for the bubble rise velocity, considering different parameters, and especially the superficial gas velocity in saturated conditions. These correlations are a basis to determine mass transfer correlations for the design of bubble column at high pressure and temperature conditions. (c) 2021 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Bubble rising velocity and bubble size distribution in columns at high pressure and temperature: From lab scale experiments to design parameters. Chemical Engineering Research and Design, 2021, 173, pp.108-118. ⟨10.1016/j.cherd.2021.07.003⟩. ⟨hal-03515133⟩
Mónica Amado, Cristian Barca, Mario Hernández, Jean-Henry Ferrasse. Evaluation of Energy Recovery Potential by Anaerobic Digestion and Dark Fermentation of Residual Biomass in Colombia. Frontiers in Energy Research, 2021, 9, ⟨10.3389/fenrg.2021.690161⟩. ⟨hal-03515212⟩ Plus de détails...
This study provides the first overview in Colombia on energy recovery potential by anaerobic digestion (AD) and dark fermentation (DF) of three different residual biomasses: coffee mucilage (CFM), cocoa mucilage (CCM), and swine manure (SM). First, AD and DF models were developed based on the ADM1 model. Then, simulated biogas production yields were compared to experimental data to validate the models. The results of comparative simulations indicate that energy recovery potentials from biogas for the different Colombian departments range from 148 to 48,990 toe, according to the local production amounts of CFM, CCM, and SM in 2017. The study provides crucial information that can be used to assess the best design, operation mode, and locations of AD and DF plants in Colombia. The results indicate that biogas production performances and energy recovery yields improve by increasing CFM/SM and/or CCM/SM ratios of the feed, and by increasing organic load from 2 to 26 gCOD∙l −1 .
Mónica Amado, Cristian Barca, Mario Hernández, Jean-Henry Ferrasse. Evaluation of Energy Recovery Potential by Anaerobic Digestion and Dark Fermentation of Residual Biomass in Colombia. Frontiers in Energy Research, 2021, 9, ⟨10.3389/fenrg.2021.690161⟩. ⟨hal-03515212⟩
Nicolas Lusinier, Isabelle Seyssiecq, Cecilia Sambusiti, Matthieu Jacob, Nicolas Lesage, et al.. A comparative study of conventional activated sludge and fixed bed hybrid biological reactor for oilfield produced water treatment: influence of hydraulic retention time. Chemical Engineering Journal, 2021, 420 (2), pp.127611. ⟨10.1016/j.cej.2020.127611⟩. ⟨hal-02989059⟩ Plus de détails...
This study focuses on the development of a hybrid biological reactor for the treatment of synthetic oilfield produced water. To face increasingly strict regulations concerning produced water discharge, a fixed bed hybrid biological reactor (FBHBR) containing a combination of free activated sludge and a fixed biofilm support was compared to a conventional activated sludge reactor (CAS). After gradual microbial acclimation, a 133-day experiment showed that both bioreactors were able to efficiently remove phenol, toluene, xylenes, and polycyclic aromatic hydrocarbons (PAHs) from a synthetic wastewater with a chemical oxygen demand (COD) removal rate above 95%, at hydraulic retention times (HRT) of 24 h and 18 h, and that only the FBHBR was able to maintain high removal efficiency at an HRT of 12 h. Ecotoxicity tests showed that outlet waters from both bioreactors were non-toxic. Assessment of the bacterial population revealed notable differences between the CAS reactor and FBHBR. In particular, wider diversity was observed in the FBHBR. The marked similarity between the bacterial composition of the free sludge and that of the biofilm in the FBHBR suggests that biofilm detachment played an important part role in bacterial development in the free sludge.
Nicolas Lusinier, Isabelle Seyssiecq, Cecilia Sambusiti, Matthieu Jacob, Nicolas Lesage, et al.. A comparative study of conventional activated sludge and fixed bed hybrid biological reactor for oilfield produced water treatment: influence of hydraulic retention time. Chemical Engineering Journal, 2021, 420 (2), pp.127611. ⟨10.1016/j.cej.2020.127611⟩. ⟨hal-02989059⟩
David Ranava, Cassandra Backes, Ganesan Karthikeyan, Olivier Ouari, Audrey Soric, et al.. Metabolic Exchange and Energetic Coupling between Nutritionally Stressed Bacterial Species: Role of Quorum-Sensing Molecules. mBio, 2021, 12 (1), pp.e02758-20. ⟨10.1128/mBio.02758-20⟩. ⟨hal-03115469⟩ Plus de détails...
Formation of multispecies communities allows nearly every niche on earth to be colonized, and the exchange of molecular information among neighboring bacteria in such communities is key for bacterial success. To clarify the principles controlling interspecies interactions, we previously developed a coculture model with two anaerobic bacteria, Clostridium acetobutylicum (Gram positive) and Desulfovibrio vulgaris Hildenborough (Gram negative, sulfate reducing). Under conditions of nutritional stress for D. vulgaris, the existence of tight cell-cell interactions between the two bacteria induced emergent properties. Here, we show that the direct exchange of carbon metabolites produced by C. acetobutylicum allows D vulgaris to duplicate its DNA and to be energetically viable even without its substrates. We identify the molecular basis of the physical interactions and how autoinducer-2 (AI-2) molecules control the interactions and metabolite exchanges between C. acetobutylicum and D. vulgaris (or Escherichia coli and D. vulgaris). With nutrients, D. vulgaris produces a small molecule that inhibits in vitro the AI-2 activity and could act as an antagonist in vivo. Sensing of AI-2 by D. vulgaris could induce formation of an intercellular structure that allows directly or indirectly metabolic exchange and energetic coupling between the two bacteria.
David Ranava, Cassandra Backes, Ganesan Karthikeyan, Olivier Ouari, Audrey Soric, et al.. Metabolic Exchange and Energetic Coupling between Nutritionally Stressed Bacterial Species: Role of Quorum-Sensing Molecules. mBio, 2021, 12 (1), pp.e02758-20. ⟨10.1128/mBio.02758-20⟩. ⟨hal-03115469⟩
Cristian Barca, Dario Scanu, Nicola Podda, Helene Miche, Laurent Poizat, et al.. Phosphorus removal from wastewater by carbonated bauxite residue under aerobic and anoxic conditions. Journal of Water Process Engineering, 2021, pp.101757. ⟨10.1016/j.jwpe.2020.101757⟩. ⟨hal-03036764⟩ Plus de détails...
This study aimed at evaluating the potential use of carbonated bauxite residue (CBR) as filter substrate to upgrade phosphorus (P) removal in small wastewater treatment plants such as constructed wetlands. Comparative experiments of P removal were performed in two columns continuously fed with synthetic and real wastewater to investigate the behavior of CBR under aerobic (column A) and anoxic biotic conditions (column B). The effect of various parameters, including pH, temperature, addition of organic carbon, and dissolved oxygen concentration, was investigated. Also, a series of chemical extractions was performed to elucidate the main mechanisms of P removal achieved by CBR. Over 140 days of operation, columns A and B showed a total P removal performance of 98.5% and 91.6%, thus reaching a total P removal capacity of 0.63 mg P/g CBR and 0.61 mg P/g CBR, respectively. The results indicate that 2 aeration conditions and microbial activity can significantly affect the performance of CBR filters. Under aerobic conditions, precipitation of CaP complexes appears to be the main mechanism leading to P removal. Under anoxic biotic conditions, microbially driven mobilization of Fe from CBR may provide Fe ions for Fe-P precipitation, but also it may lead to Fe release from the filters. This study provides crucial information to evaluate the potential use of CBR at different steps of the wastewater treatment process. Overall, the results indicate that the use of CBR filters is particularly suitable as a tertiary treatment step to remove P from effluents with low organic load under aerobic conditions.
Cristian Barca, Dario Scanu, Nicola Podda, Helene Miche, Laurent Poizat, et al.. Phosphorus removal from wastewater by carbonated bauxite residue under aerobic and anoxic conditions. Journal of Water Process Engineering, 2021, pp.101757. ⟨10.1016/j.jwpe.2020.101757⟩. ⟨hal-03036764⟩
Nicolas Lusinier, Isabelle Seyssiecq, Cecilia Sambusiti, Matthieu Jacob, Nicolas Lesage, et al.. A comparative study of conventional activated sludge and fixed bed hybrid biological reactor for oilfield produced water treatment: influence of hydraulic retention time. Chemical Engineering Journal, 2021, 420 (2), pp.127611. ⟨10.1016/j.cej.2020.127611⟩. ⟨hal-02989059⟩ Plus de détails...
This study focuses on the development of a hybrid biological reactor for the treatment of synthetic oilfield produced water. To face increasingly strict regulations concerning produced water discharge, a fixed bed hybrid biological reactor (FBHBR) containing a combination of free activated sludge and a fixed biofilm support was compared to a conventional activated sludge reactor (CAS). After gradual microbial acclimation, a 133-day experiment showed that both bioreactors were able to efficiently remove phenol, toluene, xylenes, and polycyclic aromatic hydrocarbons (PAHs) from a synthetic wastewater with a chemical oxygen demand (COD) removal rate above 95%, at hydraulic retention times (HRT) of 24 h and 18 h, and that only the FBHBR was able to maintain high removal efficiency at an HRT of 12 h. Ecotoxicity tests showed that outlet waters from both bioreactors were non-toxic. Assessment of the bacterial population revealed notable differences between the CAS reactor and FBHBR. In particular, wider diversity was observed in the FBHBR. The marked similarity between the bacterial composition of the free sludge and that of the biofilm in the FBHBR suggests that biofilm detachment played an important part role in bacterial development in the free sludge.
Nicolas Lusinier, Isabelle Seyssiecq, Cecilia Sambusiti, Matthieu Jacob, Nicolas Lesage, et al.. A comparative study of conventional activated sludge and fixed bed hybrid biological reactor for oilfield produced water treatment: influence of hydraulic retention time. Chemical Engineering Journal, 2021, 420 (2), pp.127611. ⟨10.1016/j.cej.2020.127611⟩. ⟨hal-02989059⟩
Jiupeng Du, Nelson Ibaseta, Pierrette Guichardon. Generation of an O/W emulsion in a flow-focusing microchip: importance of wetting conditions and of dynamic interfacial tension. Chemical Engineering Research and Design, 2020, ⟨10.1016/j.cherd.2020.04.012⟩. ⟨hal-02799613⟩ Plus de détails...
6 To date, there is no information on the microfluidic emulsification of dibutyl adipate and 7 n-butyl acetate in water. Since these solvents are very suitable for microencapsulation by 8 interfacial polymerization, it is highly necessary to study the emulsification behavior of these 9 solvents in microchannel. This work shows that the microfluidic emulsification of these sol-10 vents in water may fail to obtain stabilized flow regimes. This is due to droplet coalescence 11 and wall wetting, even if a hydrophilic microchip is used. Hydrodynamic results show that 12 squeezing and dripping regimes are especially affected because of the wall wetting by the 13 dispersed phase. This difficulty can be circumvented by adding a surfactant (here Tween 14 80) into the aqueous phase. However, high surfactant concentrations (ten times the crit-15 ical micelle concentration) should be used for the water-dibutyl adipate system. Indeed, 16 comparison of flow maps for several surfactant concentrations seems to indicate that the 17 dynamic interfacial tension is higher than the one expected (equilibrium), for surfactant 18 concentrations lower than one hundred times the critical micelle concentration. The esti-19 mated diffusion time of Tween 80 is compared to the droplet formation time at different 20 conditions. The choice of more appropriate dimensionless numbers to represent flow maps 21 is also discussed. 22
Jiupeng Du, Nelson Ibaseta, Pierrette Guichardon. Generation of an O/W emulsion in a flow-focusing microchip: importance of wetting conditions and of dynamic interfacial tension. Chemical Engineering Research and Design, 2020, ⟨10.1016/j.cherd.2020.04.012⟩. ⟨hal-02799613⟩
Kelly Ohanessian, Mathias Monnot, Philippe Moulin, Jean-Henry Ferrasse, Cristian Barca, et al.. Dead-end and crossflow ultrafiltration process modelling: Application on chemical mechanical polishing wastewaters. Chemical Engineering Research and Design, 2020, 158, pp.164-176. ⟨10.1016/j.cherd.2020.04.007⟩. ⟨hal-02892457⟩ Plus de détails...
Dynamic simulation of ultrafiltration process is applied to the treatment of chemical mechanical polishing wastewater from microelectronic industry. The ultrafiltration of nanoparticles (NPs) contained in chemical mechanical polishing wastewater is modelled by using different mathematical equations, which are derived from the literature and optimized to the effluent and filtration modes (dead-end or crossflow). A series of ultrafiltration experiments at laboratory scale are carried out by using chemical mechanical polishing wastewater to optimize and validate the models. Complete dead-end and crossflow ultrafiltration models are developed to simulate the treatment performances of chemical mechanical polishing wastewater under dynamic full-scale and different operating conditions, thus including filtration and washing steps. Simulations show that the dead-end mode is not suitable for chemical mechanical polishing wastewater concentration higher than 100 mgNPs L-1 due to the too fast fouling time and to the high frequency of washing step. The high concentration of chemical mechanical polishing P wastewater (2600 mgNPs L-1) forces industries to use crossflow ultrafiltration to have a profitable process by controlling parameters such as the filtration/backwashing number of cycles, the needed filtering surface and the filtration flux.
Kelly Ohanessian, Mathias Monnot, Philippe Moulin, Jean-Henry Ferrasse, Cristian Barca, et al.. Dead-end and crossflow ultrafiltration process modelling: Application on chemical mechanical polishing wastewaters. Chemical Engineering Research and Design, 2020, 158, pp.164-176. ⟨10.1016/j.cherd.2020.04.007⟩. ⟨hal-02892457⟩
Xiaotong Zhan, Sabine Michaud-Chevallier, Damien Hérault, Françoise Duprat. On-Line Analysis of the Heterogeneous Pd-Catalyzed Transfer Hydrogenation of p -Nitrophenol in Water with Formic Acid in a Flow Reactor. Organic Process Research and Development, 2020, 24 (5), pp.686-694. ⟨10.1021/acs.oprd.9b00291⟩. ⟨hal-02611832⟩ Plus de détails...
An versatile experimental setup composed of a fixed-bed reactor and an HPLC apparatus has been developed for the study of heterogeneous catalytic reactions under transient conditions. The transfer hydrogen reaction of formic acid in water to give p-nitrophenol catalyzed by Pd@Al 2 O 3 support was chosen as the model reaction in a flow reactor. On one hand, this setup allowed the first experimental on-line measurements of p-aminophenol in an acidic medium, indicating that it is the only product of the reaction at steady state. On the other hand, the setup evidenced a quite long transient period before stationary conditions were reached, involving a transient component that is quite instable and can transform to p-aminophenol without a catalyst. Results of numerical simulations indicate that only a change in the reaction mechanism, due to a change in the catalyst activity after few minutes of reaction, can explain the transient production of this intermediate and that this occurs when the active hydrogen coverage of the catalyst is low.
Xiaotong Zhan, Sabine Michaud-Chevallier, Damien Hérault, Françoise Duprat. On-Line Analysis of the Heterogeneous Pd-Catalyzed Transfer Hydrogenation of p -Nitrophenol in Water with Formic Acid in a Flow Reactor. Organic Process Research and Development, 2020, 24 (5), pp.686-694. ⟨10.1021/acs.oprd.9b00291⟩. ⟨hal-02611832⟩
Dan Feng, Laure Malleret, Audrey Soric, Olivier Boutin. Kinetic study of glyphosate degradation in wet air oxidation conditions. Chemosphere, 2020, 247, pp.125930. ⟨10.1016/j.chemosphere.2020.125930⟩. ⟨hal-02892476⟩ Plus de détails...
Glyphosate is one of the most widely used herbicides in the world against perennial and annual weeds. It has been reported to be a micro pollutant, and its degradation in different wastewater treatment processes must be studied. For that purpose, the kinetics of wet air oxidation of glyphosate was studied in an autoclave reactor at a temperature range of 423-523 K and under a total pressure of 15 MPa. Oxidation reactions obeyed the first-order kinetics with respect to glyphosate concentration. The activation energy for glyphosate oxidation was found to be equal to 68.4 kJ mol(-1). Furthermore, the possible reaction intermediates and main end products of glyphosate degradation in the wet air oxidation process were identified and quantified using UV-spectrophotometry and liquid chromatography coupled to high resolution mass spectrometry. A degradation pathway for glyphosate oxidation was proposed.
Dan Feng, Laure Malleret, Audrey Soric, Olivier Boutin. Kinetic study of glyphosate degradation in wet air oxidation conditions. Chemosphere, 2020, 247, pp.125930. ⟨10.1016/j.chemosphere.2020.125930⟩. ⟨hal-02892476⟩
C. Pinchai, Mathias Monnot, S. Lefèvre, Olivier Boutin, Philippe Moulin. Membrane filtration coupled with wet air oxidation for intensified treatment of biorefractory effluents. Water Science and Technology, 2020, pp.wst2020052. ⟨10.2166/wst.2020.052⟩. ⟨hal-02481682⟩ Plus de détails...
This work aims to analyse the performances of a new hybrid process: membrane filtration to concentrate biorefractory wastewater before being treated by a hydrothermal process such as wet air oxidation. The aim is to obtain a complete discharge of the effluent in the environment. The three different synthetic wastewaters under study were pharmaceutical wastewater, grey wastewater and bilge wastewater. The results of the membrane filtration showed high retention rates as it could reach between 75% and 100% of total organic carbon rentention, more than 99% of turbidity removal and more than 70% of hydrocarbon retention. Moreover, it was possible to achieve high concentration factors comprised between 17 and 40 times. Membrane fouling was chemically reversible regardless of the type of pollution. Then, the treatment of the membrane retentates by wet air oxidation process (300 °C, 15 MPa) could eliminate more than 83% of organic pollution for all the tested effluents. In summary, the hybrid intensified process could finally decrease the volume and the waste load of wastewater before possibly discharging it into the environment.
C. Pinchai, Mathias Monnot, S. Lefèvre, Olivier Boutin, Philippe Moulin. Membrane filtration coupled with wet air oxidation for intensified treatment of biorefractory effluents. Water Science and Technology, 2020, pp.wst2020052. ⟨10.2166/wst.2020.052⟩. ⟨hal-02481682⟩
Hélène Cervo, Jean-Henry Ferrasse, Bernard Descales, Greet van Eetvelde. Blueprint: A methodology facilitating data exchanges to enhance the detection of industrial symbiosis opportunities – application to a refinery. Chemical Engineering Science, 2020, 211, pp.115254. ⟨10.1016/j.ces.2019.115254⟩. ⟨hal-02319708⟩ Plus de détails...
The European Union (EU) has put the concept of circularity at the heart of its strategy for transitioning towards a low-carbon economy and reducing the use of virgin resources. Concrete measures, such as clarifying rules on co-products or supporting innovative projects, have been taken in order to promote Industrial Symbiosis (IS)-turning one industry's co-product into another industry's raw material. However, one of the main barriers to the democratisation of IS remains the exchange of (confidential) data between industrial partners. Here, the concept of industrial sector blueprints is presented as a solution in order to overcome the challenge of sharing information across industrial sectors. A blueprint is constituted of a series of profiles providing insights on the key inputs and outputs of a given industry in terms of thermal and electrical energy, materials and services. A heuristic and comprehensive methodology is presented detailing a step-by-step approach for building the profiles and the type of data required. It is applied to a typical refinery demonstrating the efficiency of the method and showing how it can be used in an IS context.
Hélène Cervo, Jean-Henry Ferrasse, Bernard Descales, Greet van Eetvelde. Blueprint: A methodology facilitating data exchanges to enhance the detection of industrial symbiosis opportunities – application to a refinery. Chemical Engineering Science, 2020, 211, pp.115254. ⟨10.1016/j.ces.2019.115254⟩. ⟨hal-02319708⟩
Dan Feng, Audrey Soric, Olivier Boutin. Treatment technologies and degradation pathways of glyphosate: A critical review. Science of the Total Environment, 2020, 742, pp.140559. ⟨10.1016/j.scitotenv.2020.140559⟩. ⟨hal-02960128⟩ Plus de détails...
Glyphosate is one of the most widely used post-emergence broad-spectrum herbicides in the world. This molecule has been frequently detected in aqueous environment and can cause adverse effects to plants, animals, microorganisms, and humans. This review offers a comparative assessment of current treatment methods (physical, biological, and advanced oxidation process) for glyphosate wastewaters, considering their advantages and drawbacks. As for other molecules, adsorption does not destroy glyphosate. It can be used before other processes, if glyphosate concentrations are very high, or after, to decrease the final concentration of glyphosate and its by-products. Most of biological and oxidation processes can destroy glyphosate molecules, leading to by-products (the main ones being AMAP and sarcosine) that can be or not affected by these processes. This point is of major importance to control process efficiency. That is the reason why a specific focus on glyphosate degradation pathways by biological treatment or different advanced oxidation processes is proposed. However, one process is usually not efficient enough to reach the required standards. Therefore, the combination of processes (for instance biological and oxidation ones) seems to be high-performance technologies for the treatment of glyphosate-containing wastewater, due to their potential to overcome some drawbacks of each individual process. Finally, this review provides indications for future work for different treatment processes to increase their performances and gives some insights into the treatment of glyphosate or other organic contaminants in wastewater.
Dan Feng, Audrey Soric, Olivier Boutin. Treatment technologies and degradation pathways of glyphosate: A critical review. Science of the Total Environment, 2020, 742, pp.140559. ⟨10.1016/j.scitotenv.2020.140559⟩. ⟨hal-02960128⟩
Dan Feng, Laure Malleret, Guillaume Chiavassa, Olivier Boutin, Audrey Soric. Biodegradation capabilities of acclimated activated sludge towards glyphosate: Experimental study and kinetic modeling. Biochemical Engineering Journal, 2020, 161, pp.107643. ⟨10.1016/j.bej.2020.107643⟩. ⟨hal-02960167⟩ Plus de détails...
The acclimation process of activated sludge from a wastewater treatment plant for degradation of glyphosate and its biodegradation kinetics were studied in a batch reactor. The parameters monitored included the concentrations of glyphosate, as well as aminomethylphosphonic acid (AMPA), its main metabolite, total organic carbon (TOC), pH, dissolved oxygen (DO) and biomass concentration. M the end of the acclimation process, glyphosate removal efficiency of the acclimated sludge was compared to the fresh sludge one. The results showed that the acclimation process highly increased degradation efficiency. Complete glyphosate removal has been achieved during kinetics experiments. Glyphosate removal kinetic of the acclimated sludge was modeled by Monod model that accurately fitted the experimental results with a maximum growth rate (mu(max)) of 0.34 h(-1) and half-saturation constant (K-s) of 1600 mg L-1. Finally, a biodegradation pathway of glyphosate used as carbon source was proposed.
Dan Feng, Laure Malleret, Guillaume Chiavassa, Olivier Boutin, Audrey Soric. Biodegradation capabilities of acclimated activated sludge towards glyphosate: Experimental study and kinetic modeling. Biochemical Engineering Journal, 2020, 161, pp.107643. ⟨10.1016/j.bej.2020.107643⟩. ⟨hal-02960167⟩
Camille Grandclement, Anne Piram, Marie-Eleonore Petit, Isabelle Seyssiecq, Isabelle Laffont-Schwob, et al.. Biological Removal and Fate Assessment of Diclofenac Using Bacillus subtilis and Brevibacillus laterosporus Strains and Ecotoxicological Effects of Diclofenac and 49-Hydroxy-diclofenac. Journal of Chemistry , 2020, 2020, pp.9789420. ⟨10.1155/2020/9789420⟩. ⟨hal-02564026⟩ Plus de détails...
Since bacterial consortia involved in conventional wastewater treatment processes are not efficient in removing diclofenac (DCF), an emerging pollutant frequently detected in water bodies, the identification of microorganisms able to metabolise this pharmaceutical compound is relevant. us, DCF removal was investigated using bacteria isolated from aqueous stock solutions of this micro-pollutant and identified as Bacillus and Brevibacillus species using 16S rRNA gene sequencing. A 100% DCF removal was achieved after 17 hours of experiment at 20°C in a nutrient medium; the biodegradation kinetic followed a pseudo-first order (k biol = 11 L·g SS −1 ·d −1). Quantitative assessment of DCF removal showed that its main route was biotic degradation. e main degradation product of DCF, 4′-hydroxy-diclofenac (4′-OH-DCF), was identified using liquid chromatography-electrospray ionisation high-resolution mass spectrometry. Since the ecotoxicological impact of 4′-hydroxy-diclofenac was not reported in the literature, the ecotoxicity of DCF and its metabolite were tentatively evaluated using Vibrio fischeri bioassays. Results from these tests showed that this metabolite is not more toxic than its parent compound and may hopefully be an intermediate product in the DCF transformation. Indeed, no significant difference in ecotoxicity was observed after 30 min between DCF (50 should be writtten in subscript all along the manuscript in EC 50 = 23 ± 4 mg·L −1) and 4′-hydroxy-diclofenac (EC 50 = 19 ± 2 mg·L −1). Besides, the study highlighted a limit of the Microtox ® bioassay, which is largely used to assess ecotoxicity. e bioluminescence of Vibrio fischeri was impacted due to the production of microbial activity and the occurrence of some carbon source in the studied medium.
Camille Grandclement, Anne Piram, Marie-Eleonore Petit, Isabelle Seyssiecq, Isabelle Laffont-Schwob, et al.. Biological Removal and Fate Assessment of Diclofenac Using Bacillus subtilis and Brevibacillus laterosporus Strains and Ecotoxicological Effects of Diclofenac and 49-Hydroxy-diclofenac. Journal of Chemistry , 2020, 2020, pp.9789420. ⟨10.1155/2020/9789420⟩. ⟨hal-02564026⟩
Chamaiporn Pinchai, Mathias Monnot, Sébastien Lefevre, Olivier Boutin, Philippe Moulin. Coupling membrane filtration and wet air oxidation for advanced wastewater treatment: Performance at the pilot scale and process intensification potential. Canadian Journal of Chemical Engineering, 2019, pp.1-10. ⟨10.1002/cjce.23688⟩. ⟨hal-02416179⟩ Plus de détails...
Bio‐refractory wastewater treatment is compulsory for a safe discharge into the environment. This paper aims to study the use of membrane processes to concentrate wastewater to be then treated by a hydrothermal process such as wet air oxidation for advanced and intensified wastewater treatment. The work focused on three different synthetic wastewaters of public or industrial interest: pharmaceutical wastewater, grey wastewater, and bilge wastewater. Membrane processes operated at the pilot scale enabled retentions as high as 100% of total organic carbon, more than 99% of turbidity, and 70% of hydrocarbon, respectively. High concentration factors were obtained. Membrane foulings were chemically reversible whatever the type of wastewater or the membrane process. Thanks to membrane filtrations, the volumes to be treated by wet air oxidation were drastically reduced, leading to high energy savings. Membrane retentates were then treated by wet air oxidation (300°C, 15 MPa) and resulted in more than an 83% mineralization rate, regardless of the effluent. The hybrid intensified process presented in this work strongly increased the possibility of discharging into the environment by mixing the process outputs or greatly reducing the discharge volume and ultimately the waste load.
Chamaiporn Pinchai, Mathias Monnot, Sébastien Lefevre, Olivier Boutin, Philippe Moulin. Coupling membrane filtration and wet air oxidation for advanced wastewater treatment: Performance at the pilot scale and process intensification potential. Canadian Journal of Chemical Engineering, 2019, pp.1-10. ⟨10.1002/cjce.23688⟩. ⟨hal-02416179⟩
Hélène Cervo, Stéphane Ogé, Amtul Samie Maqbool, Francisco Mendez Alva, Lindsay Lessard, et al.. A Case Study of Industrial Symbiosis in the Humber Region Using the EPOS Methodology. Sustainability, 2019, 11 (24), pp.6940. ⟨10.3390/su11246940⟩. ⟨hal-02395672⟩ Plus de détails...
For the last 20 years, the field of industrial symbiosis (IS) has raised interest among academics and industries. IS consists of dissimilar entities sharing and valorising underutilised resources such as materials, energy, information, services, or technologies in the view of increasing the industrial system's circularity. Despite the benefits brought by IS, though, barriers hindering the full dissemination of IS remain. This paper presents a methodology developed in the framework of the H2020 European project EPOS that aims at removing some of the obstacles to the implementation of IS. The method follows a multidisciplinary approach that intents to trigger the interest of industry decision-makers and initiate efforts to optimise the use of energy and material resources through symbiosis. It is applied to an industrial cluster located in the Humber region of UK. The case study shows how the approach helped to identify several IS opportunities, how one particular high-potential symbiosis was further assessed, and how it led to the creation of a business case. It was estimated that the identified symbiosis could bring substantial economic (+2000 k€ pa), environmental (−4000 t of CO 2 eq. pa) and social (+7 years of healthy life) gains to the region.
Hélène Cervo, Stéphane Ogé, Amtul Samie Maqbool, Francisco Mendez Alva, Lindsay Lessard, et al.. A Case Study of Industrial Symbiosis in the Humber Region Using the EPOS Methodology. Sustainability, 2019, 11 (24), pp.6940. ⟨10.3390/su11246940⟩. ⟨hal-02395672⟩
Thomas Cattagni, Maxime Geiger, Anthony Supiot, Philippe de Mazancourt, Didier Pradon, et al.. A single session of anodal transcranial direct current stimulation applied over the affected primary motor cortex does not alter gait parameters in chronic stroke survivors. Neurophysiologie Clinique/Clinical Neurophysiology, Elsevier Masson, 2019, 49 (4), pp.283-293. ⟨10.1016/j.neucli.2019.07.012⟩. ⟨hal-02528918⟩ Plus de détails...
Thomas Cattagni, Maxime Geiger, Anthony Supiot, Philippe de Mazancourt, Didier Pradon, et al.. A single session of anodal transcranial direct current stimulation applied over the affected primary motor cortex does not alter gait parameters in chronic stroke survivors. Neurophysiologie Clinique/Clinical Neurophysiology, Elsevier Masson, 2019, 49 (4), pp.283-293. ⟨10.1016/j.neucli.2019.07.012⟩. ⟨hal-02528918⟩
Thomas Cattagni, Maxime Geiger, Anthony Supiot, Raphael Zory, Didier Pradon, et al.. A single session of bihemispheric transcranial direct current stimulation does not improve quadriceps muscle spasticity in people with chronic stroke. Brain Stimulation, Elsevier, 2019, 12 (5), pp.1309-1311. ⟨10.1016/j.brs.2019.06.027⟩. ⟨hal-02528921⟩ Plus de détails...
Thomas Cattagni, Maxime Geiger, Anthony Supiot, Raphael Zory, Didier Pradon, et al.. A single session of bihemispheric transcranial direct current stimulation does not improve quadriceps muscle spasticity in people with chronic stroke. Brain Stimulation, Elsevier, 2019, 12 (5), pp.1309-1311. ⟨10.1016/j.brs.2019.06.027⟩. ⟨hal-02528921⟩
Ct Nzogo Metoule, S. Delaby, Jean-Henry Ferrasse, Olivier Boutin. Hydrothermal process development for the treatment of crocidolite asbestos waste. Waste Management and Research, 2019, 37 (9), pp.914-924. ⟨10.1177/0734242X19859426⟩. ⟨hal-02450344⟩ Plus de détails...
Ct Nzogo Metoule, S. Delaby, Jean-Henry Ferrasse, Olivier Boutin. Hydrothermal process development for the treatment of crocidolite asbestos waste. Waste Management and Research, 2019, 37 (9), pp.914-924. ⟨10.1177/0734242X19859426⟩. ⟨hal-02450344⟩
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Gas hold up in bubble column at high pressure and high temperature. Chemical Engineering Science, Elsevier, 2019, 200, pp.186-202. ⟨10.1016/j.ces.2019.01.055⟩. ⟨hal-02177058⟩ Plus de détails...
Gas holdup of water/nitrogen, water-phenol/nitrogen and water-phenol/air systems was successfully measured by a method based on the use of a differential pressure sensor installed on a bubble column reactor, in a wide domain of temperature (from 100 to 300 degrees C) and pressure (from 10 to 30 MPa). These experimental conditions are little or no explored in literature. Results show a predominant influence of the superficial gas velocity, the evaporation of the liquid phase, the ratio of the gas volume flowrate on the liquid volume flowrate and the phenol concentration. Pressure and chemical reaction have little effect on gas holdup. The temperature has an effect in the case of phenol solutions. The different correlations and parameters influence determined in this work are very helpful for the design of gas liquid contactors (for instance bubble column) at high pressure and high temperature.
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Gas hold up in bubble column at high pressure and high temperature. Chemical Engineering Science, Elsevier, 2019, 200, pp.186-202. ⟨10.1016/j.ces.2019.01.055⟩. ⟨hal-02177058⟩
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Gas hold up in bubble column at high pressure and high temperature. Chemical Engineering Science, 2019, 200, pp.186-202. ⟨10.1016/j.ces.2019.01.055⟩. ⟨hal-02177058⟩ Plus de détails...
Gas holdup of water/nitrogen, water-phenol/nitrogen and water-phenol/air systems was successfully measured by a method based on the use of a differential pressure sensor installed on a bubble column reactor, in a wide domain of temperature (from 100 to 300 degrees C) and pressure (from 10 to 30 MPa). These experimental conditions are little or no explored in literature. Results show a predominant influence of the superficial gas velocity, the evaporation of the liquid phase, the ratio of the gas volume flowrate on the liquid volume flowrate and the phenol concentration. Pressure and chemical reaction have little effect on gas holdup. The temperature has an effect in the case of phenol solutions. The different correlations and parameters influence determined in this work are very helpful for the design of gas liquid contactors (for instance bubble column) at high pressure and high temperature.
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Gas hold up in bubble column at high pressure and high temperature. Chemical Engineering Science, 2019, 200, pp.186-202. ⟨10.1016/j.ces.2019.01.055⟩. ⟨hal-02177058⟩
Nicolas Lusinier, Isabelle Seyssiecq, Cécilia Sambusiti, Matthieu Jacob, Nicolas Lesage, et al.. Biological Treatments of Oilfield Produced Water: A Comprehensive Review. SPE Journal, 2019, ⟨10.2118/195677-PA⟩. ⟨hal-02118229⟩ Plus de détails...
Nicolas Lusinier, Isabelle Seyssiecq, Cécilia Sambusiti, Matthieu Jacob, Nicolas Lesage, et al.. Biological Treatments of Oilfield Produced Water: A Comprehensive Review. SPE Journal, 2019, ⟨10.2118/195677-PA⟩. ⟨hal-02118229⟩
Cristian Barca, Mathieu Martino, Pierre Hennebert, Nicolas Roche. Kinetics and capacity of phosphorus extraction from solid residues obtained from wet air oxidation of sewage sludge. Waste Management, 2019, 89, pp.275-283. ⟨10.1016/j.wasman.2019.04.024⟩. ⟨hal-02118222⟩ Plus de détails...
Solid residues from thermal treatments of sewage sludge (SS) represent a valuable source of phosphorus (P) for the fertilizer production. This study aims at evaluating the P recovery potential from solid residues obtained from wet air oxidation of SS under subcritical water conditions (WAO residues). A series of P extraction experiments was performed by acidic and alkaline leaching at different liquid to solid ratios. Hot chemical extractions and P fractionations were also carried out to characterize the chemical composition of the WAO residues. The main objectives of this work were to determine the best operating conditions for P extraction, and to describe and understand the kinetics and the main mechanisms leading to P release. The results obtained in this study indicate that 1 M citric acid and 1 M HCl at the liquid to solid ratio of 10 L/kg can extract 61% and 65% of the total P content after 2 h of contact time at room temperature, thus giving P extraction capacities of 81 and 86 g P/kg WAO residues, respectively. The analysis of kinetic data indicates that P extraction with 1 M HCl is faster, but 1 M citric acid can give higher P extraction efficiencies at the equilibrium. The molar ratios of Ca to P of the leachates suggest that P extraction from WAO residues was primarily due to the dissolution of a mixture of various Ca-P complexes. (C) 2019 Elsevier Ltd. All rights reserved.
Cristian Barca, Mathieu Martino, Pierre Hennebert, Nicolas Roche. Kinetics and capacity of phosphorus extraction from solid residues obtained from wet air oxidation of sewage sludge. Waste Management, 2019, 89, pp.275-283. ⟨10.1016/j.wasman.2019.04.024⟩. ⟨hal-02118222⟩
Pierre Haldenwang, Braulio Bernales, Pierrette Guichardon, Nelson Ibaseta. Simple Theoretical Results on Reversible Fouling in Cross-Flow Membrane Filtration. Membranes, 2019, Application of Membrane Filtration in Industrial Processes, and in the Treatment of Water and Industrial Wastewater), 9 (4), pp.48. ⟨10.3390/membranes9040048⟩. ⟨hal-02109009⟩ Plus de détails...
In cross-flow membrane filtration, fouling results from material deposit which clogs the membrane inner surface. This hinders filtration, which experiences the so-called limiting flux. Among the models proposed by the literature, we retain a simple one: a steady-state reversible fouling is modelled with the use of a single additional parameter, i.e., N d , the ratio of the critical concentration for deposition to the feed concentration at inlet. To focus on fouling, viscous pressure drop and osmotic (counter-)pressure have been chosen low. It results in a minimal model of fouling. Solved thoroughly with the numerical means appropriate to enforce the nonlinear coupling between permeation and concentration polarization, the model delivers novel information. It first shows that permeation is utterly governed by solute transfer, the relevant non-dimensional quantities being hence limited to N d and Pe in , the transverse Péclet number. Furthermore, when the role played by N d and moderate Pe in (say Pe in < 40) is investigated, all results can be interpreted with the use of a single non-dimensional parameter, F l , the so-called fouling number, which simply reads F l ≡ Pe in N −1 d. Now rendered possible, the overall fit of the numerical data allows us to put forward analytical final expressions, which involve all the physical parameters and allow us to retrieve the experimental trends.
Pierre Haldenwang, Braulio Bernales, Pierrette Guichardon, Nelson Ibaseta. Simple Theoretical Results on Reversible Fouling in Cross-Flow Membrane Filtration. Membranes, 2019, Application of Membrane Filtration in Industrial Processes, and in the Treatment of Water and Industrial Wastewater), 9 (4), pp.48. ⟨10.3390/membranes9040048⟩. ⟨hal-02109009⟩
Dan Feng, Jean-Henry Ferrasse, Audrey Soric, Olivier Boutin. Bubble characterization and gas–liquid interfacial area in two phase gas–liquid system in bubble column at low Reynolds number and high temperature and pressure. Chemical Engineering Research and Design, 2019, 144, pp.95-106. ⟨10.1016/j.cherd.2019.02.001⟩. ⟨hal-02177001⟩ Plus de détails...
Bubbles hydrodynamic in gas-liquid contactor, including bubble size distribution, bubble size and gas-liquid interfacial area, was evaluated as a function of superficial gas velocity, superficial liquid velocity, temperature, pressure and different gases (N-2 and He) and liquids (water and ethanol/water mixture) phases. The results showed that with the increase of superficial gas velocity, the bubble size distribution shifted from smaller- to larger-size bubble and the Sauter mean diameter, the gas holdup and the interfacial area generally increased due to the increase of coalescence. The effect of superficial liquid velocity on bubble characteristics was not significant. Pressure and temperature showed slight influence on gas holdup and interfacial area. The bubble characteristics were not significantly influenced by the type of gas phase, but mainly affected by the liquid composition. Correlations to predict Sauter mean bubble diameter and the gas holdup are developed using Kanaris correlation and in good agreement with experimental results.
Dan Feng, Jean-Henry Ferrasse, Audrey Soric, Olivier Boutin. Bubble characterization and gas–liquid interfacial area in two phase gas–liquid system in bubble column at low Reynolds number and high temperature and pressure. Chemical Engineering Research and Design, 2019, 144, pp.95-106. ⟨10.1016/j.cherd.2019.02.001⟩. ⟨hal-02177001⟩
Cristian Barca, Mathieu Martino, Pierre Hennebert, Nicolas Roche. Kinetics and capacity of phosphorus extraction from solid residues obtained from wet air oxidation of sewage sludge. Waste Management, Elsevier, 2019, 89, pp.275-283. ⟨10.1016/j.wasman.2019.04.024⟩. ⟨hal-02118222⟩ Plus de détails...
Solid residues from thermal treatments of sewage sludge (SS) represent a valuable source of phosphorus (P) for the fertilizer production. This study aims at evaluating the P recovery potential from solid residues obtained from wet air oxidation of SS under subcritical water conditions (WAO residues). A series of P extraction experiments was performed by acidic and alkaline leaching at different liquid to solid ratios. Hot chemical extractions and P fractionations were also carried out to characterize the chemical composition of the WAO residues. The main objectives of this work were to determine the best operating conditions for P extraction, and to describe and understand the kinetics and the main mechanisms leading to P release. The results obtained in this study indicate that 1 M citric acid and 1 M HCl at the liquid to solid ratio of 10 L/kg can extract 61% and 65% of the total P content after 2 h of contact time at room temperature, thus giving P extraction capacities of 81 and 86 g P/kg WAO residues, respectively. The analysis of kinetic data indicates that P extraction with 1 M HCl is faster, but 1 M citric acid can give higher P extraction efficiencies at the equilibrium. The molar ratios of Ca to P of the leachates suggest that P extraction from WAO residues was primarily due to the dissolution of a mixture of various Ca-P complexes. (C) 2019 Elsevier Ltd. All rights reserved.
Cristian Barca, Mathieu Martino, Pierre Hennebert, Nicolas Roche. Kinetics and capacity of phosphorus extraction from solid residues obtained from wet air oxidation of sewage sludge. Waste Management, Elsevier, 2019, 89, pp.275-283. ⟨10.1016/j.wasman.2019.04.024⟩. ⟨hal-02118222⟩
Dan Feng, Jean-Henry Ferrasse, Audrey Soric, Olivier Boutin. Bubble characterization and gas–liquid interfacial area in two phase gas–liquid system in bubble column at low Reynolds number and high temperature and pressure. Chemical Engineering Research and Design, Elsevier, 2019, 144, pp.95-106. ⟨10.1016/j.cherd.2019.02.001⟩. ⟨hal-02177001⟩ Plus de détails...
Bubbles hydrodynamic in gas-liquid contactor, including bubble size distribution, bubble size and gas-liquid interfacial area, was evaluated as a function of superficial gas velocity, superficial liquid velocity, temperature, pressure and different gases (N-2 and He) and liquids (water and ethanol/water mixture) phases. The results showed that with the increase of superficial gas velocity, the bubble size distribution shifted from smaller- to larger-size bubble and the Sauter mean diameter, the gas holdup and the interfacial area generally increased due to the increase of coalescence. The effect of superficial liquid velocity on bubble characteristics was not significant. Pressure and temperature showed slight influence on gas holdup and interfacial area. The bubble characteristics were not significantly influenced by the type of gas phase, but mainly affected by the liquid composition. Correlations to predict Sauter mean bubble diameter and the gas holdup are developed using Kanaris correlation and in good agreement with experimental results.
Dan Feng, Jean-Henry Ferrasse, Audrey Soric, Olivier Boutin. Bubble characterization and gas–liquid interfacial area in two phase gas–liquid system in bubble column at low Reynolds number and high temperature and pressure. Chemical Engineering Research and Design, Elsevier, 2019, 144, pp.95-106. ⟨10.1016/j.cherd.2019.02.001⟩. ⟨hal-02177001⟩
Marine Minière, Olivier Boutin, Audrey Soric. Combination of chemical and biological processes to enhance the treatment of hardly biodegradable matter in industrial wastewater: Selection parameters and performances. Canadian Journal of Chemical Engineering, 2019, 97 (S1), pp.1361-1370. ⟨10.1002/cjce.23414⟩. ⟨hal-02177025⟩ Plus de détails...
The increasing complexity of industrial effluents, combined with the increase in discharge constraints, leads to the necessity to improve processes treatment. Apart from new processes, the combination and optimization of existing processes could be the answer to these questions. Regarding coupling processes, the purifying potential has been demonstrated for a large range of processes, pollutants, and effluents. However, there has been a lack of studies integrating a biological process, although this has increased since 2000. The objective of this review is to focus on the combination of chemical and biological treatments for industrial applications and to provide recommendations based on different examples from the literature.
Marine Minière, Olivier Boutin, Audrey Soric. Combination of chemical and biological processes to enhance the treatment of hardly biodegradable matter in industrial wastewater: Selection parameters and performances. Canadian Journal of Chemical Engineering, 2019, 97 (S1), pp.1361-1370. ⟨10.1002/cjce.23414⟩. ⟨hal-02177025⟩
Jonathan Goffe, Jean-Henry Ferrasse. Stoichiometry impact on the optimum efficiency of biomass conversion to biofuels. Energy, 2019, 170, pp.438-458. ⟨10.1016/j.energy.2018.12.137⟩. ⟨hal-02900619⟩ Plus de détails...
Biomass has the specific characteristic of being included in a short regeneration cycle that minimizes its ecological impact and should give it a preferential role in the energy transition. The scale up in the deployment of bioenergy requires an objective approach to processes. It is necessary to identify, according to a defined and available biomass, the most appropriate processes and products to extend their deployment This requires deep process analysis to identify achievable optimizations and opportunities of improvement. In order to provide criteria to identify the upper theoretical limits of biomass conversion, a theoretical approach to the conversion of two biomass (lignocellulosic and microalguae) into simple energy vector as alkanes, alcohols, carbon monoxide or hydrogen is carried out. Modelling highlights the importance of stoichiometry in the feasibility and efficiency of biomass conversions. The impact of hydrogen supply and its energy cost in improving conversion efficiency is also underlined. In terms of biomass conversion results, microalgae provide better conversion efficiency than lignocellulosic biomass. For these reactions, an optimal carbon conversion ratio is identified. The optimum conversion ratios are about 36% to 46% for short chains such as methane or methanol and 64% to 75% for long chains. • Stoichiometry plays a major role in the biomass conversion • Optimum limit for biomass conversions are identified for alkanes, alcohols, H 2 and CO production • Hydrogen supply source can improve conversion efficiency • Proposal of a methodology to calculate efficiency for biomass conversion
Jonathan Goffe, Jean-Henry Ferrasse. Stoichiometry impact on the optimum efficiency of biomass conversion to biofuels. Energy, 2019, 170, pp.438-458. ⟨10.1016/j.energy.2018.12.137⟩. ⟨hal-02900619⟩
Clément Leonard, Jean-Henry Ferrasse, Olivier Boutin, Sébastien Lefevre, Alain Viand. Measurements and correlations for gas liquid surface tension at high pressure and high temperature. AIChE Journal, 2018, 64 (11), pp.4110-4117. ⟨10.1002/aic.16216⟩. ⟨hal-02114480⟩ Plus de détails...
Surface tension of water/nitrogen and water-phenol/nitrogen systems was successfully measured by the hanging drop method in a wide domain of temperature (from 100 to 300°C) and pressure (from 4 to 30MPa), conditions little explored literature. Results show that surface tension of water-phenol mixtures decreases as phenol mass fraction increases. This decrease is observed under saturated and unsaturated conditions and is more pronounced at low temperatures and does not seem to depend on pressure. The effect of saturation on surface tension in the water/nitrogen system has been correlated with water vapor pressure by using experimental points with a great accuracy. For the water-phenol/nitrogen system, experimental data obtained with different mass fraction of phenol were correlated using Macleod-Sugden equation for mixtures. Topical heading Reaction Engineering, Kinetics and Catalysis Transport Phenomena and Fluid Mechanics
Clément Leonard, Jean-Henry Ferrasse, Olivier Boutin, Sébastien Lefevre, Alain Viand. Measurements and correlations for gas liquid surface tension at high pressure and high temperature. AIChE Journal, 2018, 64 (11), pp.4110-4117. ⟨10.1002/aic.16216⟩. ⟨hal-02114480⟩
Clément Leonard, Jean-Henry Ferrasse, Olivier Boutin, Sébastien Lefevre, Alain Viand. Measurements and correlations for gas liquid surface tension at high pressure and high temperature. AIChE Journal, 2018, 64 (11), pp.4110-4117. ⟨10.1002/aic.16216⟩. ⟨hal-02114480⟩ Plus de détails...
Surface tension of water/nitrogen and water-phenol/nitrogen systems was successfully measured by the hanging drop method in a wide domain of temperature (from 100 to 300°C) and pressure (from 4 to 30MPa), conditions little explored literature. Results show that surface tension of water-phenol mixtures decreases as phenol mass fraction increases. This decrease is observed under saturated and unsaturated conditions and is more pronounced at low temperatures and does not seem to depend on pressure. The effect of saturation on surface tension in the water/nitrogen system has been correlated with water vapor pressure by using experimental points with a great accuracy. For the water-phenol/nitrogen system, experimental data obtained with different mass fraction of phenol were correlated using Macleod-Sugden equation for mixtures. Topical heading Reaction Engineering, Kinetics and Catalysis Transport Phenomena and Fluid Mechanics
Clément Leonard, Jean-Henry Ferrasse, Olivier Boutin, Sébastien Lefevre, Alain Viand. Measurements and correlations for gas liquid surface tension at high pressure and high temperature. AIChE Journal, 2018, 64 (11), pp.4110-4117. ⟨10.1002/aic.16216⟩. ⟨hal-02114480⟩
Marine Minière, Olivier Boutin, Audrey Soric. Evaluation of degradation and kinetics parameters of acid orange 7 through wet air oxidation process. Canadian Journal of Chemical Engineering, 2018, 96 (11), pp.2450-2454. ⟨10.1002/cjce.23195⟩. ⟨hal-02114681⟩ Plus de détails...
Among the industrial effluents presenting constraints to traditional biological treatments, those from textile industries are of particular concern. Wet air oxidation is an effective process that significantly increases biodegradability of the treated effluent. In this study, the advantage of this process was tested for the treatment of acid orange 7, a dye molecule used as a model textile effluent. Different experimental conditions of temperature (200 to 300 8C) and duration of treatment were used to determine its degradation yield during the wet air oxidation process, at a total pressure of 30 MPa. All these conditions led to complete degradation of acid orange 7, but residual Total Organic Carbon always remained. Oxidation byproducts were identified by the means of GC and HPLC analyses. Acetic acid remains the major compound not oxidized. These experiments resulted in the proposal of a reaction scheme associated with kinetic constants. Finally, the optimal conditions for the improvement of the biodegradability of the effluent were determined. This wet air oxidation process could then be coupled with a biological treatment to obtain an overall degradation meeting the criteria for release into the environment.
Marine Minière, Olivier Boutin, Audrey Soric. Evaluation of degradation and kinetics parameters of acid orange 7 through wet air oxidation process. Canadian Journal of Chemical Engineering, 2018, 96 (11), pp.2450-2454. ⟨10.1002/cjce.23195⟩. ⟨hal-02114681⟩
Hiba Souissi, Raphael Zory, Julien Boudarham, Didier Pradon, Nicolas Roche, et al.. Muscle force strategies for poststroke hemiparetic patients during gait. Topics in Stroke Rehabilitation, 2018, 26 (1), pp.58-65. ⟨10.1080/10749357.2018.1536023⟩. ⟨hal-02506537⟩ Plus de détails...
Wirginia Tomczak, Jean-Henry Ferrasse, Marie-Thérèse Giudici-Orticoni, Audrey Soric. Effect of hydraulic retention time on a continuous biohydrogen production in a packed bed biofilm reactor with recirculation flow of the liquid phase. International Journal of Hydrogen Energy, 2018, 43 (41), pp.18883-18895. ⟨10.1016/j.ijhydene.2018.08.094⟩. ⟨hal-02116035⟩ Plus de détails...
The present paper reports on results obtained from experiments carried out in a laboratory-scale anaerobic packed bed biofilm reactor (APBR), with recirculation of the liquid phase, for continuously biohydrogen production via dark fermentation. The reactor was filled with Kaldnes® biofilm carrier and inoculated with an anaerobic mesophilic sludge from a urban wastewater treatment plant (WWTP). The APBR was operated at a temperature of 37 °C, without pH buffering. The effect of theoretical hydraulic retention time (HRT) from 1 to 5 h on hydrogen yield (HY), hydrogen production rate (HPR), substrate conversion and metabolic pathways was investigated. This study indicates the possibility of enhancing hydrogen production by using APBR with recirculation flow. Among respondents values of HRT the highest average values of HY (2.35 mol H2/mol substrate) and HPR (0.085 L h−1L−1) have been obtained at HRT equal to 2 h.
Wirginia Tomczak, Jean-Henry Ferrasse, Marie-Thérèse Giudici-Orticoni, Audrey Soric. Effect of hydraulic retention time on a continuous biohydrogen production in a packed bed biofilm reactor with recirculation flow of the liquid phase. International Journal of Hydrogen Energy, 2018, 43 (41), pp.18883-18895. ⟨10.1016/j.ijhydene.2018.08.094⟩. ⟨hal-02116035⟩
Carlos Baqueiro, Nelson Ibaseta, Pierrette Guichardon, Laurent Falk. Influence of reagents choice (buffer, acid and inert salt) on triiodide production in the Villermaux–Dushman method applied to a stirred vessel. Chemical Engineering Research and Design, 2018, 136, pp.25-31. ⟨10.1016/j.cherd.2018.04.017⟩. ⟨hal-01771934⟩ Plus de détails...
This work studies how deeply the reagents choice influences micromixing characterisation by the Villermaux-Dushman method, when applying it to a 1 litre stainless steel standard vessel with two baffles, stirred by an inclined blade turbine. For the first time, borate and phosphate buffer are compared on their use in the method. It is observed that triiodide production is higher when borate buffer is used. Moreover, perchloric acid leads to higher triiodide production than sulphuric acid, when injecting the same concentration of both acids. Finally, the influence of the ionic strength is also studied, since there has been a great deal of controversy about it over the last years. The results show that the ionic strength affects triiodide production, although relatively slightly. Advice concerning the choice of the reagents is given in conclusion.
Carlos Baqueiro, Nelson Ibaseta, Pierrette Guichardon, Laurent Falk. Influence of reagents choice (buffer, acid and inert salt) on triiodide production in the Villermaux–Dushman method applied to a stirred vessel. Chemical Engineering Research and Design, 2018, 136, pp.25-31. ⟨10.1016/j.cherd.2018.04.017⟩. ⟨hal-01771934⟩
Hiba Souissi, Raphael Zory, Jonathan Bredin, Nicolas Roche, Pauline Gerus. Co-contraction around the knee and the ankle joints during post-stroke gait.. European Journal of Physical and Rehabilitation Medicine, 2018, 54 (3), pp.380-387. ⟨10.23736/S1973-9087.17.04722-0⟩. ⟨hal-02506559⟩ Plus de détails...
Impairments resulting from hemiparetic stroke lead to persistent difficulties with walking. Abnormal co-contraction patterns of lower limb muscles might be a compensatory mechanism to deal with its resulting gait impairments.
Hiba Souissi, Raphael Zory, Jonathan Bredin, Nicolas Roche, Pauline Gerus. Co-contraction around the knee and the ankle joints during post-stroke gait.. European Journal of Physical and Rehabilitation Medicine, 2018, 54 (3), pp.380-387. ⟨10.23736/S1973-9087.17.04722-0⟩. ⟨hal-02506559⟩
Journal: European Journal of Physical and Rehabilitation Medicine
Félicité Ondze, Jean-Henry Ferrasse, Olivier Boutin, Jean-Christophe Ruiz, Frédéric Charton. Process simulation and energetic analysis of different supercritical water gasification systems for the valorisation of biomass. Journal of Supercritical Fluids, 2018, 133, pp.114 - 121. ⟨10.1016/j.supflu.2017.10.002⟩. ⟨hal-02115423⟩ Plus de détails...
The energetic efficiency for the supercritical gasification of biomass is studied for three cases: hydrogen and methane production, heat and electricity cogeneration. Experimental results from the gasification of glucose are used to represent the gasifier. The other unit operations are simulated using the software ProsimPlus through thermodynamic equilibrium calculations. Simulations are conducted at different pressure, temperature and initial biomass concentration. The energetic and exergetic yields are calculated, as well as the minimum heat requirement estimated from a pinch analysis. All the results are then exploited to determine optimal conditions for two systems: adiabatic and isothermal.
Félicité Ondze, Jean-Henry Ferrasse, Olivier Boutin, Jean-Christophe Ruiz, Frédéric Charton. Process simulation and energetic analysis of different supercritical water gasification systems for the valorisation of biomass. Journal of Supercritical Fluids, 2018, 133, pp.114 - 121. ⟨10.1016/j.supflu.2017.10.002⟩. ⟨hal-02115423⟩
Olivier Lafforgue, Isabelle Seyssiecq, Sébastien Poncet, Julien Favier. Rheological properties of synthetic mucus for airway clearance. Journal of Biomedical Materials Research Part A, 2018, 106 (2), pp.386 - 396. ⟨10.1002/jbm.a.36251⟩. ⟨hal-01678912⟩ Plus de détails...
In this work, a complete rheological characterization of bronchial mucus simulants based on the composition proposed by Zahm et al. [1] is presented. Dynamic Small Amplitude Oscillatory Shear (SAOS) experiments, Steady State (SS) flow measurements and three Intervals Thixotropy Tests (3ITT), are carried out to investigate the global rheological complexities of simulants (viscoelasticity, viscoplasticity, shear-thinning and thixotropy) as a function of scleroglucan concentrations (0.5 to 2wt%) and under temperatures of 20 and 37 °C. SAOS measurements show that the limit of the linear viscoelastic range as well as the elasticity both increase with increasing sclerogucan concentrations. Depending on the sollicitation frequency, the 0.5wt% gel response is either liquid-like or solid-like, whereas more concentrated gels show a solid-like response over the whole frequency range. The temperature dependence of gels response is negligible in the 20-37°C range. The Herschel-Bulkley (HB) model is chosen to fit the SS flow curve of simulants. The evolution of HB parameters versus polymer concentration show that both shear-thinning and viscoplasticity increase with increasing concentrations. 3ITTs allow calculation of recovery thixotropic times after shearings at 100s-1 or 1.6s-1. Empiric correlations are proposed to quantify the effect of polymer concentration on rheological parameters of mucus simulants.
Olivier Lafforgue, Isabelle Seyssiecq, Sébastien Poncet, Julien Favier. Rheological properties of synthetic mucus for airway clearance. Journal of Biomedical Materials Research Part A, 2018, 106 (2), pp.386 - 396. ⟨10.1002/jbm.a.36251⟩. ⟨hal-01678912⟩
Journal: Journal of Biomedical Materials Research Part A
Cristian Barca, Stephane Troesch, Yves Andres, Florent Chazarenc, Nicolas Roche. Modelling hydrodynamics of horizontal flow steel slag filters designed to upgrade phosphorus removal in small wastewater treatment plants. Journal of Environmental Management, 2018, 206, pp.349-356. ⟨10.1016/j.jenvman.2017.10.040⟩. ⟨hal-02111630⟩ Plus de détails...
Steel slag filters, if well designed and operated, may upgrade phosphorus removal in small wastewater treatment plants such as stabilization ponds and constructed wetlands. The main objective of this study was to develop a systemic modelling approach to describe changes in the hydraulic performances and internal hydrodynamics of steel slag filters under real dynamic operating conditions. The experimental retention time distribution curves (RTD curves) determined from tracer experiments performed at different times during the first year of operation of two field-scale steel slag filters were analyzed through a three stage process. First, a statistical analysis of the RTD curves was performed to determine statistical parameters of the retention time distribution. Second, classical tanks in series (TIS) and plug flow with dispersion (PFD) models were used to obtain a first evaluation of the dispersion and mixing regime. Finally, a multi-flow path TIS model, based on the assumption of several flow paths with different hydraulic properties, is proposed to accurately describe the internal hydrodynamics. Overall, the results of this study indicate that higher CaO content, round shape, and larger grain size distribution of steel slag may promote plug-like flow rather than dispersion. The results of the multi-flow path TIS model suggest that the internal hydrodynamics of steel slag filters can be primarily described by two main flow paths: (i) a faster main flow path showing higher plug flow, followed by (ii) a slower secondary flow path showing higher dispersion. The results also showed that internal hydrodynamics may change over time as a consequence of physical-chemical phenomena occurring in the filter, including accumulation of precipitates, slag hydration and carbonation, and particle segregation.
Cristian Barca, Stephane Troesch, Yves Andres, Florent Chazarenc, Nicolas Roche. Modelling hydrodynamics of horizontal flow steel slag filters designed to upgrade phosphorus removal in small wastewater treatment plants. Journal of Environmental Management, 2018, 206, pp.349-356. ⟨10.1016/j.jenvman.2017.10.040⟩. ⟨hal-02111630⟩
Gustavo Lopes, Nelson Ibaseta, Pierrette Guichardon, Pierre Haldenwang. Effects of solute permeability on permeation and solute rejection in membrane filtration. Chemical Engineering and Technology, 2018, 41 (4), pp.788-797. ⟨10.1002/ceat.201700203⟩. ⟨hal-01681108⟩ Plus de détails...
Membrane solute permeability plays a role in the buildup of concentration polarization in pressure-driven crossflow filtration processes, and thus in the determination of the permeate flux, solute rejection, retentate flux and concentration. We numerically examine reverse-osmosis desalination with membranes of fixed solvent permeability, but of variable selectivity with respect to the solute. The study highlights an intricate coupling between retentate and filtrate properties. In particular, it reveals that, for given values of solute permeability and feed concentration, there is a maximum operating pressure that optimizes solute rejection regardless of the feed salinity. The conditions leading to this and to other peculiar behaviors for permeation fluxes and concentrations are identified.
Gustavo Lopes, Nelson Ibaseta, Pierrette Guichardon, Pierre Haldenwang. Effects of solute permeability on permeation and solute rejection in membrane filtration. Chemical Engineering and Technology, 2018, 41 (4), pp.788-797. ⟨10.1002/ceat.201700203⟩. ⟨hal-01681108⟩
N. Rizk, N. Ait-Mouheb, G. Bourrier, Bruno Molle, Nicolas Roche. Parameters controlling chemical deposits in micro-irrigation with treated wastewater. Journal of Water Supply: Research and Technology - AQUA, 2017, 66 (8), pp.587 - 597. ⟨10.2166/aqua.2017.065⟩. ⟨hal-01665983⟩ Plus de détails...
Micro-irrigation with treated wastewater has the potential to be the most efficient irrigation technique, especially in water scarce areas. Its main disadvantage is the high sensitivity of the drippers to clog. This study focused only on the chemical precipitation mechanisms. In a batch chemical process in parallel with PHREEQC software, two temperatures (22 and 55°C), four pH (8, 8.5, 9 and 9.5) and CO2 partial pressure were tested. The aim was to analyze the quantity of precipitates and their crystalline nature and calculate the effects of these factors on the behavior of dissolved chemical elements in treated wastewater to be able to validate and calibrate a geochemical software in order to predict chemical precipitation. The amount of precipitate increases by increasing pH and temperature. Precipitates were analyzed using thermo gravimetric analysis (TGA) and X-ray diffraction (XRD). Calcium carbonate (CaCO3) in the form of calcite was found to be the predominant precipitate. Experimental and model results showed that the saturation index (SI) of calcite was found to be the factor that most frequently affected calcite precipitation. Calcite SI is pH, temperature and CO2 partial pressure dependent. In the case of irrigation, water equilibrium with atmospheric CO2 minimizes precipitation of calcite.
N. Rizk, N. Ait-Mouheb, G. Bourrier, Bruno Molle, Nicolas Roche. Parameters controlling chemical deposits in micro-irrigation with treated wastewater. Journal of Water Supply: Research and Technology - AQUA, 2017, 66 (8), pp.587 - 597. ⟨10.2166/aqua.2017.065⟩. ⟨hal-01665983⟩
Journal: Journal of Water Supply: Research and Technology - AQUA
The effect of acidic conditions (in a pH range of 3 to 6) and temperature on the kinetics of the hydrothermal oxidation of ferrous iron contained in BOF steel slag has been tested in the 150–350 • C range for acid acetic concentrations from 0 to 4 M. Reaction progress was monitored with the amount of produced H 2. Higher temperature and lower pH are found to enhance the hydrothermal oxidation kinetics of the slag. These two parameters are believed to increase iron dissolution rate which has already been identified as the rate limiting step of the hydrothermal oxidation of pure FeO. An activation energy of 28 ± 4 kJ/mole is found for the hydrothermal oxidation of the steel slag which compares very well with that of pure FeO under similar conditions. In the case of the slag run in water at 300 • C for 70.5 h, magnetite product has been separated magnetically and characterized. Particles were found to fall in three size ranges: 10–30 nm, 100–300 nm, and 1–10 µm. The smallest fraction (10–30 nm) is comparable to the 10–20 nm size range that is achieved when nanomagnetite are synthesized by co-precipitation methods. Obviously, the production of nanomagnetite enhances the economic interest of the hydrothermal processing of steel slags, which has already proven its capacity to produce high-purity H 2 .
Camille Crouzet, Fabrice Brunet, Nadir Recham, Anne-Line Auzende, Nathaniel Findling, et al.. Hydrothermal Steel Slag Valorization—Part II: Hydrogen and Nano-Magnetite Production. Frontiers in Earth Science, 2017, 5, ⟨10.3389/feart.2017.00086⟩. ⟨hal-01678896⟩
Camille Crouzet, Fabrice Brunet, German Montes-Hernandez, Nadir Recham, Nathaniel Findling, et al.. Hydrothermal Valorization of Steel Slags—Part I: Coupled H2 Production and CO2 Mineral Sequestration. Frontiers in Energy Research, 2017, 5, ⟨10.3389/fenrg.2017.00029⟩. ⟨hal-01678886⟩ Plus de détails...
A new process route for the valorization of BOF steel slags combining H2 production and CO2 mineral sequestration is investigated at 300°C (HT) under hydrothermal conditions. A BOF steel slag stored several weeks outdoor on the production site was used as starting material. To serve as a reference, room temperature (RT) carbonation of the same BOF steel slag has been monitored with in situ Raman spectroscopy and by measuring pH and PCO2 on a time-resolved basis. CO2 uptake under RT and HT are, respectively, 243 and 327 kg CO2/t of fresh steel slag, which add up with the 63 kg of atmospheric CO2 per ton already uptaken by the starting steel slag on the storage site. The CO2 gained by the sample at HT is bounded to the carbonation of brownmillerite. H2 yield decreased by about 30% in comparison to the same experiment performed without added CO2, due to sequestration of ferrous iron in a Mg-rich siderite phase. Ferric iron, initially present in brownmillerite, is partitioned between an Fe-rich clay mineral of saponite type and metastable hematite. Saponite is likely stabilized by the presence of Al, whereas hematite may represent a metastable product of brown-millerite carbonation. Mg-rich wüstite is involved in at least two competing reactions, i.e., oxidation into magnetite and carbonation into siderite. Results of both water-slag and water-CO2-slag experiments after 72 h are consistent with a kinetics enhancement of the former reaction when a CO2 partial pressure imposes a pH between 5 and 6. Three possible valorization routes, (1) RT carbonation prior to hydrothermal oxidation, (2) RT carbonation after hydrothermal treatment, and (3) combined HT carbonation and oxidation are discussed in light of the present results and literature data.
Camille Crouzet, Fabrice Brunet, German Montes-Hernandez, Nadir Recham, Nathaniel Findling, et al.. Hydrothermal Valorization of Steel Slags—Part I: Coupled H2 Production and CO2 Mineral Sequestration. Frontiers in Energy Research, 2017, 5, ⟨10.3389/fenrg.2017.00029⟩. ⟨hal-01678886⟩
Olivier Lafforgue, N. Bouguerra, Sebastien Poncet, Isabelle Seyssiecq, Julien Favier, et al.. Thermo-physical properties of synthetic mucus for the study of airway clearance. Journal of Biomedical Materials Research Part A, 2017, 105 (11), pp.3025-3033 ⟨10.1002/jbm.a.36161⟩. ⟨hal-01596484⟩ Plus de détails...
In this article, dynamic viscosity, surface tension, density, heat capacity and thermal conductivity, of a bronchial mucus simulant proposed by Zahm et al., Eur Respir J 1991; 4: 311–315 were experiementally determined. This simulant is mainly composed of a galactomannan gum and a scleroglucan. It was shown that thermophysical properties of synthetic mucus are dependant of scleroglucan concentrations. More importantly and for some scleroglucan concentrations, the syntetic mucus, exhibits, somehow, comparable thermophysical properties to real bronchial mucus. An insight on the microstructure of this simulant is proposed and the different properties enounced previously have been measured for various scleroglucan concentrations and over a certain range of operating temperatures. This synthetic mucus is found to mimic well the rheological behavior and the surface tension of real mucus for different pathologies. Density and thermal properties have been measured for the first time.
Olivier Lafforgue, N. Bouguerra, Sebastien Poncet, Isabelle Seyssiecq, Julien Favier, et al.. Thermo-physical properties of synthetic mucus for the study of airway clearance. Journal of Biomedical Materials Research Part A, 2017, 105 (11), pp.3025-3033 ⟨10.1002/jbm.a.36161⟩. ⟨hal-01596484⟩
Journal: Journal of Biomedical Materials Research Part A
Antoine Leybros, Laurence Hung, Audrey Hertz, Didier Hartmann, Agnès Grandjean, et al.. Supercritical CO 2 extraction of uranium from natural ore using organophosphorus extractants. Chemical Engineering Journal, 2017, 316, pp.196 - 203. ⟨10.1016/j.cej.2017.01.101⟩. ⟨hal-01583524⟩ Plus de détails...
The feasibility of extracting uranium from natural ores has been studied, using supercritical CO2 and either commercial extractants (PC88A, Cyanex 301®) or an amidophosphonate molecule (named DEHCNPB). The impact of the process parameters has been evaluated. The uranium extraction yield was optimal at the lowest temperature (40 °C) and highest pressure (25 MPa) tested here. For a given CO2 flow rate, a compromise should be established between the amounts of extractant, acid and oxidant used. Uranium was successfully extracted directly from natural ore using DEHCNPB with a good selectivity over metal impurities such as iron, titanium and vanadium and yields up to 97%. Moreover, using Fe2(SO4)3 as an oxidant allows to minimize the water usage of the process. The mechanism of extraction using supercritical CO2 has been elucidated thanks to electrospray ionization mass spectrometry.
Antoine Leybros, Laurence Hung, Audrey Hertz, Didier Hartmann, Agnès Grandjean, et al.. Supercritical CO 2 extraction of uranium from natural ore using organophosphorus extractants. Chemical Engineering Journal, 2017, 316, pp.196 - 203. ⟨10.1016/j.cej.2017.01.101⟩. ⟨hal-01583524⟩
Camille Grandclement, Isabelle Seyssiecq, Anne Piram, Pascal Wong-Wah-Chung, Guillaume Vanot, et al.. From the conventional biological wastewater treatment to hybrid processes, the evaluation of organic micropollutant removal: A review. Water Research, 2017, 111, pp.297-317. ⟨10.1016/j.watres.2017.01.005⟩. ⟨hal-01456484⟩ Plus de détails...
Because of the recalcitrance of some micropollutants to conventional wastewater treatment systems, the occurrence of organic micropollutants in water has become a worldwide issue, and an increasing environmental concern. Their biodegradation during wastewater treatments could be an interesting and low cost alternative to conventional physical and chemical processes. This paper provides a review of the organic micropollutants removal efficiency from wastewaters. It analyses different biological processes, from conventional ones, to new hybrid ones. Micropollutant removals appear to be compound-and process-dependent, for all investigated processes. The influence of the main physico-chemical parameters is discussed, as well as the removal efficiency of different microorganisms such as bacteria or white rot fungi, and the role of their specific enzymes. Even though some hybrid processes show promising micropollutant removals, further studies are needed to optimize these water treatment processes, in particular in terms of technical and economical competitiveness.
Camille Grandclement, Isabelle Seyssiecq, Anne Piram, Pascal Wong-Wah-Chung, Guillaume Vanot, et al.. From the conventional biological wastewater treatment to hybrid processes, the evaluation of organic micropollutant removal: A review. Water Research, 2017, 111, pp.297-317. ⟨10.1016/j.watres.2017.01.005⟩. ⟨hal-01456484⟩
B. Bernales, Pierre Haldenwang, Pierrette Guichardon, Nelson Ibaseta. Prandtl model for concentration polarization and osmotic counter-effects in a 2-D membrane channel. Desalination, 2017, 404, pp.341 - 359. ⟨10.1016/j.desal.2016.09.026⟩. ⟨hal-01405589⟩ Plus de détails...
An accurate 2-D numerical model that accounts for concentration polarization and osmotic effects is developed for the cross-flow filtration in a membrane channel. Focused on the coupling between laminar hydrodynam-ics and mass transfer, the numerical approach solves the solute conservation equation together with the steady Navier-Stokes equations under the Prandtl approximation, which offers a simplified framework to enforce the non-linear coupling between filtration and concentration polarization at the membrane surface. The present approach is first validated thanks to the comparison with classical exact analytical solutions for hydrodynamics and/or mass transfer, as well as with approximated analytical solutions that attempted at coupling the various phenomena. The effects of the main parameters in cross-flow reverse osmosis (RO) or nanofiltration (NF) (feed concentration, axial flow rate, operating pressure and membrane permeability) on streamlines, velocity profile, longitudinal pressure drop, local permeate flux and solute concentration profile are predicted with the present numerical model, and discussed. With the use of data reported from NF and RO experiments, the Prandtl approximation model is shown to accurately correlate both average permeate flux and local solute concentration over a wide range of operating conditions.
B. Bernales, Pierre Haldenwang, Pierrette Guichardon, Nelson Ibaseta. Prandtl model for concentration polarization and osmotic counter-effects in a 2-D membrane channel. Desalination, 2017, 404, pp.341 - 359. ⟨10.1016/j.desal.2016.09.026⟩. ⟨hal-01405589⟩
Martine Poux, Nicolas Roche. Selected papers from the 10 th European Congress of Chemical Engineering - ECCE10 - Nice, France. Canadian Journal of Chemical Engineering, 2017, 95 (2), pp.207-207. ⟨10.1002/cjce.22685⟩. ⟨hal-02120055⟩ Plus de détails...
The 10th European Congress of Chemical Engineering (ECCE10) was held in conjunction with the 3rd European Congress of Applied Biotechnology (ECAB3) and the 5th EPIC European Process Intensification Conference (EPIC5) in Nice, France, from September 27th to October 1st, 2015. These events were organized by the French Society of Chemical Engineering (SFGP) under the auspice of the European Federation of Chemical Engineering (EFCE) and the European Society of Biochemical Engineering Sciences (ESBES).
Martine Poux, Nicolas Roche. Selected papers from the 10 th European Congress of Chemical Engineering - ECCE10 - Nice, France. Canadian Journal of Chemical Engineering, 2017, 95 (2), pp.207-207. ⟨10.1002/cjce.22685⟩. ⟨hal-02120055⟩
Martine Poux, Nicolas Roche. Selected Papers from the 10th European Congress of Chemical Engineering – ECCE10 – Nice, France. Canadian Journal of Chemical Engineering, 2017, 95 (2), pp.207. ⟨10.1002/cjce.22685⟩. ⟨hal-01456497⟩ Plus de détails...
Biochemical Engineering Sciences (ESBES). Approximately 1800 people from all around the world (67 nationalities) attended the conference. The participation of industrialists (25 %) and students (31 %) was remarkable. The scientific program was impressive, being composed of 5 symposia, 4 workshops, 6 plenary lectures, 82 keynotes, and more than 700 oral communications organized in 202 sessions and 900 poster communications. These covered vast chemical and biochemical engineering topics, which reflected the latest scientific trends in their field and several special issues of different peer-reviewed journals will be published.
Martine Poux, Nicolas Roche. Selected Papers from the 10th European Congress of Chemical Engineering – ECCE10 – Nice, France. Canadian Journal of Chemical Engineering, 2017, 95 (2), pp.207. ⟨10.1002/cjce.22685⟩. ⟨hal-01456497⟩
Djida Tafoukt, Audrey Soric, Jean-Claude J.-C. Sigoillot, Jean-Henry Ferrasse. Determination of kinetics and heat of hydrolysis for non homogenous substrate by isothermal calorimetry. Bioprocess and Biosystems Engineering, 2017, 40 (4), pp.1-8. ⟨10.1007/s00449-016-1728-0⟩. ⟨hal-01468071⟩ Plus de détails...
The competitiveness of the second-generation bioethanol by biotechnological process requires an effective and quantitative control of biochemical reactions. In this study, the potential of isothermal calorimetry technique to measure heat and kinetics of a non-homogeneous substrate enzymatic hydrolysis is intended. Using this technique, optimum temperature of the enzymes used for lignocellulosic molecules hydrolysis was determined. Thus, the amount of substrate-to-enzyme ratio was highlighted as an important parameter of the hydrolysis yield. Furthermore, a new enzymes' cocktail efficiency consisting of a mix of cellulases and cellobiose dehydrogenase (CDH) was qualified by this technique. The results showed that this cocktail allowed the production of a high amount of gluconic acid that could improve the attractiveness of these second-generation biofuels. From the set of experiments, the hydrolysis heat of wheat straw was derived and a meaningful value of -32.2 +/- 3.2 J g(-1) (gram reducing sugars product) is calculated. Then, isothermal measurements were used to determine kinetic constants of the cellulases and CDH mix on wheat straw. Results showed that this enzyme cocktail has an optimal rate at 45 A degrees C in the range of temperatures tested (40-55 A degrees C).
Djida Tafoukt, Audrey Soric, Jean-Claude J.-C. Sigoillot, Jean-Henry Ferrasse. Determination of kinetics and heat of hydrolysis for non homogenous substrate by isothermal calorimetry. Bioprocess and Biosystems Engineering, 2017, 40 (4), pp.1-8. ⟨10.1007/s00449-016-1728-0⟩. ⟨hal-01468071⟩
M. Rozenkevich, Yu. Pak, S. Marunich, A. Bukin, A. Ivanova, et al.. Main Features of the Technology for Air Detritiation in Scrubber Column. Fusion Science and Technology, 2017, 70 (3), pp.435-447. ⟨10.13182/FST15-153⟩. ⟨hal-01518911⟩ Plus de détails...
This paper examines the main features of the gas purification process from tritiated water vapor at any relative humidity using water phase isotope exchange. The experimentally evaluated overall mass transfer coefficient (KOG) for structured CY black packing manufactured by SULZER Chemtech (Switzerland) was used as the main performance parameter of the method. The obtained KOG dependencies on various process parameters (temperature, water and gas flows, and their ratio) demonstrate that column operation in adiabatic mode is preferable for the detritiation of gas at any relative humidity. Under comparable conditions, KOG does not depend on the column diameter in the investigated range. A comparison of the main characteristics of the developed technology with those of the technology based on water vapor adsorption on molecular sieves shows clear advantages in terms of energy, operating cost, and detritiation degree with the same amount of tritiated water produced as a radioactive waste.
M. Rozenkevich, Yu. Pak, S. Marunich, A. Bukin, A. Ivanova, et al.. Main Features of the Technology for Air Detritiation in Scrubber Column. Fusion Science and Technology, 2017, 70 (3), pp.435-447. ⟨10.13182/FST15-153⟩. ⟨hal-01518911⟩
Marine Minière, Olivier Boutin, Audrey Soric. Experimental coupling and modelling of wet air oxidation and packed-bed biofilm reactor as an enhanced phenol removal technology. Environmental Science and Pollution Research, 2017, 24 (8), pp.7693-7704. ⟨10.1007/s11356-017-8435-5⟩. ⟨hal-01629950⟩ Plus de détails...
Experimental coupling of wet air oxidation process and aerobic packed-bed biofilm reactor is presented. It has been tested on phenol as a model refractory compound. At 30 MPa and 250 °C, wet air oxidation batch experiments led to a phenol degradation of 97% and a total organic carbon removal of 84%. This total organic carbon was mainly due to acetic acid. To study the interest of coupling processes, wet air oxidation effluent was treated in a biological treatment process. This step was made up of two packed-bed biofilm reactors in series: the first one acclimated to phenol and the second one to acetic acid. After biological treatment, phenol and total organic carbon removal was 99 and 97% respectively. Thanks to parameters from literature, previous studies (kinetic and thermodynamic) and experimental data from this work (hydrodynamic parameters and biomass characteristics), both treatment steps were modelled. This modelling allows the simulation of the coupling process. Experimental results were finally well reproduced by the continuous coupled process model: relative error on phenol removal efficiency was 1 and 5.5% for wet air oxidation process and packed-bed biofilm reactor respectively.
Marine Minière, Olivier Boutin, Audrey Soric. Experimental coupling and modelling of wet air oxidation and packed-bed biofilm reactor as an enhanced phenol removal technology. Environmental Science and Pollution Research, 2017, 24 (8), pp.7693-7704. ⟨10.1007/s11356-017-8435-5⟩. ⟨hal-01629950⟩
Journal: Environmental Science and Pollution Research
Victor S Ruys, Kamel S Zerari, Isabelle S Seyssiecq, Nicolas Roche. Study of Carbonaceous and Nitrogenous Pollutant Removal Efficiencies in a Hybrid Membrane Bioreactor. Journal of Chemistry , 2017, 2017, pp.1 - 7. ⟨10.1155/2017/4080847⟩. ⟨hal-01536019⟩ Plus de détails...
A hybrid membrane bioreactor (HMBR) comprises activated sludge (free biomass), a biofilm (supported biomass), and a membrane separation. A laboratory pilot-scale HMBR was operated for seven months with high organic loads of both carbonic and nitrogen pollutants. Several experiments were conducted to investigate the influence of the height of the packing bed (27 cm, 50 cm, and 0 cm) and the effect of the concentration of dissolved oxygen (DO) on the organic removal rate, total nitrogen removal rate (TN), and ammonium removal. The organic removal rate was always >95% and mostly >98%. The NH 4 +-N and TN removal rates were directly related to DO. NH 4 +-N removal rate reached 100% and was mostly >99% with a concentration of DO > 0.1 mg/L, whereas the NO 3 −-N removal rate was differentially affected depending on the level of DO. The removal rate increased when the concentration of DO was optimal for simultaneous nitrification and denitrification, which was between 0.1 and 0.5 mg/l, and the TN removal rate was consequently high. The removal rate decreased when DO was high and denitrification was consequently low thereby reducing the TN removal rate. This implies that high levels of DO (>1 mg/L) limit the denitrification process and low levels of DO (<0.1 mg/L) limit the nitrification process and hence total nitrogen removal in the bioreactor.
Victor S Ruys, Kamel S Zerari, Isabelle S Seyssiecq, Nicolas Roche. Study of Carbonaceous and Nitrogenous Pollutant Removal Efficiencies in a Hybrid Membrane Bioreactor. Journal of Chemistry , 2017, 2017, pp.1 - 7. ⟨10.1155/2017/4080847⟩. ⟨hal-01536019⟩
Jean-Charles de Hemptinne, Jean-Henry Ferrasse, A. Gorak, Signe Kjelstrup, F. Maréchal, et al.. Energy efficiency as an example of cross-discipline collaboration in chemical engineering. Chemical Engineering Research and Design, 2017, 119, pp. 183-187. ⟨10.1016/j.cherd.2017.01.020⟩. ⟨hal-01519871⟩ Plus de détails...
This paper summarizes the round-table discussion that was held during the EuropeanCongress of Chemical Engineering (ECCE) in Nice, France, in October 2015 on this topic.The panellists come from different fields of chemical engineering and have thus broughtin different perspectives. The objective was to determine paths for developing innovativeapproaches in view of process optimization.The terminology is a first obstacle that was clarified. Energy efficiency can be envisagedeither by optimizing thermodynamic functions (entropy or exergy), more pragmatically byselecting the adequate unit operation or in a very general vision by considering all decisionvariables (i.e. including economic and political) that may have an impact on the final serviceprovided to society.The second issue relates to improving collaboration among various actors. These may bedefined in terms of type of responsibility (industrials, mostly market-driven, or academic),or in terms of discipline. The role of professional societies as the European Federation forChemical Engineers (EFCE) is stressed as a promotor of collaboration between disciplines.Finally, once willingness for collaboration is identified, the final question is how it can leadto true innovation. The largest innovation potential is often found at the interface betweenfields. Yet, it often requires both an effort to explain the mutual challenges in a didacticmanner, and the development of tools that make it possible to each partner to be efficientin his own field while being aware of the global goal and of the constraints of the others.
Jean-Charles de Hemptinne, Jean-Henry Ferrasse, A. Gorak, Signe Kjelstrup, F. Maréchal, et al.. Energy efficiency as an example of cross-discipline collaboration in chemical engineering. Chemical Engineering Research and Design, 2017, 119, pp. 183-187. ⟨10.1016/j.cherd.2017.01.020⟩. ⟨hal-01519871⟩
Cristian Barca, David Ranava, Marielle Bauzan, Jean-Henry Ferrasse, Marie-Thérèse Giudici-Orticoni, et al.. Fermentative hydrogen production in an up-flow anaerobic biofilm reactor inoculated with a co-culture of Clostridium acetobutylicum and Desulfovibrio vulgaris. Bioresource Technology, 2016, Bioresource Technology, 221, pp.Pages 526-533. ⟨10.1016/j.biortech.2016.09.072⟩. ⟨hal-01415833⟩ Plus de détails...
Dark fermentation systems often show low H2 yields and unstable H2 production, as the result of the variability of microbial dynamics and metabolic pathways. Recent batch investigations have demonstrated that an artificial consortium of two anaerobic bacteria, Clostridium acetobutylicum and Desulfovibrio vulgaris Hildenborough, may redirect metabolic fluxes and improve H2 yields. This study aimed at evaluating the scale-up from batch to continuous H2 production in an up-flow anaerobic packed-bed reactor (APBR) continuously fed with a glucose-medium. The effects of various parameters, including void hydraulic retention time (HRTv), pH, and alkalinity, on H2 production performances and metabolic pathways were investigated. The results demonstrated that a stable H2 production was reached after 3–4 days of operation. H2 production rates increased significantly with decreasing HRTv from 4 to 2 h. Instead, H2 yields remained almost stable despite the change in HRTv, indicating that the decrease in HRTv did not affect the global metabolism.
Cristian Barca, David Ranava, Marielle Bauzan, Jean-Henry Ferrasse, Marie-Thérèse Giudici-Orticoni, et al.. Fermentative hydrogen production in an up-flow anaerobic biofilm reactor inoculated with a co-culture of Clostridium acetobutylicum and Desulfovibrio vulgaris. Bioresource Technology, 2016, Bioresource Technology, 221, pp.Pages 526-533. ⟨10.1016/j.biortech.2016.09.072⟩. ⟨hal-01415833⟩
