Clémence Cordier, Christophe Stavrakakis, Benjamin Morga, Lionel Degremont, Alexandra Voulgaris, et al.. Removal of pathogens by ultrafiltration from sea water. Environment International, Elsevier, 2020, 142, pp.105809. ⟨10.1016/j.envint.2020.105809⟩. ⟨hal-02891935⟩ Plus de détails...
Among water treatment processes, ultrafiltration is known to be efficient for the elimination of micro-organisms (bacteria and viruses). In this study, two pathogens were targeted, a bacterium, Vibrio aestuarianus and a virus, OsHV-1, with the objective to produce high quality water from seawater, in the case of shellfish productions. The retention of those microorganisms by ultrafiltration was evaluated at labscale. In the case of OsHV-1, the protection of oysters was validated by in vivo experiments using oysters spat and larvae, both stages being highly susceptible to the virus. The oysters raised using contaminated seawater which was then subsequently treated by ultrafiltration, had similar mortality to the negative controls. In the case of V. aestuarianus, ultrafiltration allowed a high retention of the bacteria in seawater with concentrations below the detection limits of the 3 analytical methods (flow cytometry, direct seeding and seeding after filtration to 0.22 µm). Thus, the quantity of V. aestuarianus was at least, 400 times inferior to the threshold known to induce mortalities in oysters. Industrial scale experiment on a several months period confirmed the conclusion obtained at lab scale on the Vibrio bacteria retention. Indeed, no bacteria from this genus, potentially harmful for oysters, was detected in permeate and this, whatever the quality of the seawater treated and the bacteria concentration upstream of the membrane. Moreover, the resistance of the process was confirmed with a stability of hydraulic performances over time for two water qualities and even facing an algal bloom. In terms of retention and resistance, ultrafiltration process was validated for the treatment of seawater towards the targeted pathogenic microorganisms, with the aim of biosecuring shellfish productions.
Clémence Cordier, Christophe Stavrakakis, Benjamin Morga, Lionel Degremont, Alexandra Voulgaris, et al.. Removal of pathogens by ultrafiltration from sea water. Environment International, Elsevier, 2020, 142, pp.105809. ⟨10.1016/j.envint.2020.105809⟩. ⟨hal-02891935⟩
Mathias Monnot, S. Laborie, G. Hébrard, N. Dietrich. New approaches to adapt escape game activities to large audience in chemical engineering: Numeric supports and students’ participation. Education for Chemical Engineers, Elsevier, 2020, 32 (6), pp.50-58. ⟨10.1016/j.ece.2020.05.007⟩. ⟨hal-02902064⟩ Plus de détails...
Mathias Monnot, S. Laborie, G. Hébrard, N. Dietrich. New approaches to adapt escape game activities to large audience in chemical engineering: Numeric supports and students’ participation. Education for Chemical Engineers, Elsevier, 2020, 32 (6), pp.50-58. ⟨10.1016/j.ece.2020.05.007⟩. ⟨hal-02902064⟩
Mathias Monnot, S. Laborie, G. Hébrard, N. Dietrich. New approaches to adapt escape game activities to large audience in chemical engineering: Numeric supports and students’ participation. Education for Chemical Engineers, Elsevier, 2020, 32 (6), pp.50-58. ⟨10.1016/j.ece.2020.05.007⟩. ⟨hal-02902064⟩ Plus de détails...
Gamification is a widespread phenomenon that relies on using game mechanics in other areas, such as the learning situation. One of the most exciting types of games in the late 2010s is escape games, where the principle is for the players to manage to escape from a room in which they are locked by finding hidden items and following a sequence of puzzles. The goal of using this type of game is to motivate/involve learners, to make them work and develop adaptability and responsiveness skills. Unfortunately, these escape games are only practiced in small groups, and the design is expensive and time-consuming. That is why cost-effective alternatives are proposed in this paper. They are either dematerialized, entirely based on a digital medium (smartphone/tablets/computer), or directly created by students, also with a digital medium, allowing integration into large classes, or at open house events.
Mathias Monnot, S. Laborie, G. Hébrard, N. Dietrich. New approaches to adapt escape game activities to large audience in chemical engineering: Numeric supports and students’ participation. Education for Chemical Engineers, Elsevier, 2020, 32 (6), pp.50-58. ⟨10.1016/j.ece.2020.05.007⟩. ⟨hal-02902064⟩
Jiaqi Yang, Mathias Monnot, Lionel Ercolei, Philippe Moulin. Membrane-Based Processes Used in Municipal Wastewater Treatment for Water Reuse: State-Of-The-Art and Performance Analysis. Membranes, MDPI, 2020, 10 (6), pp.131. ⟨10.3390/membranes10060131⟩. ⟨hal-02891720⟩ Plus de détails...
Wastewater reuse as a sustainable, reliable and energy recovery concept is a promising approach to alleviate worldwide water scarcity. However, the water reuse market needs to be developed with long-term efforts because only less than 4% of the total wastewater worldwide has been treated for water reuse at present. In addition, the reclaimed water should fulfill the criteria of health safety, appearance, environmental acceptance and economic feasibility based on their local water reuse guidelines. Moreover, municipal wastewater as an alternative water resource for non-potable or potable reuse, has been widely treated by various membrane-based treatment processes for reuse applications. By collecting lab-scale and pilot-scale reuse cases as much as possible, this review aims to provide a comprehensive summary of the membrane-based treatment processes, mainly focused on the hydraulic filtration performance, contaminants removal capacity, reuse purpose, fouling resistance potential, resource recovery and energy consumption. The advances and limitations of different membrane-based processes alone or coupled with other possible processes such as disinfection processes and advanced oxidation processes, are also highlighted. Challenges still facing membrane-based technologies for water reuse applications, including institutional barriers, financial allocation and public perception, are stated as areas in need of further research and development.
Jiaqi Yang, Mathias Monnot, Lionel Ercolei, Philippe Moulin. Membrane-Based Processes Used in Municipal Wastewater Treatment for Water Reuse: State-Of-The-Art and Performance Analysis. Membranes, MDPI, 2020, 10 (6), pp.131. ⟨10.3390/membranes10060131⟩. ⟨hal-02891720⟩
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, Elsevier, 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, Elsevier, 2020, 158, pp.164-176. ⟨10.1016/j.cherd.2020.04.007⟩. ⟨hal-02892457⟩
Cordier Clémence, C. Stavrakakis, L. Charpin, M Papin, K. Guyomard, et al.. Ultrafiltration to produce pathogen free water in shellfish farms. Water today, 2020, 4, pp.28-34. ⟨hal-02891915⟩ Plus de détails...
This study demonstrates that, whatever the quality of the seawater, the ultrafiltration process delivers disinfected water with a quality adapted to shellfish culture.
Cordier Clémence, C. Stavrakakis, L. Charpin, M Papin, K. Guyomard, et al.. Ultrafiltration to produce pathogen free water in shellfish farms. Water today, 2020, 4, pp.28-34. ⟨hal-02891915⟩
Clémence Cordier, Tarik Eljaddi, Nadjim Ibouroihim, Christophe Stavrakakis, Patrick Sauvade, et al.. Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater. Membranes, MDPI, 2020, 10 (4), pp.78. ⟨10.3390/membranes10040078⟩. ⟨hal-02891926⟩ Plus de détails...
The main objective of this paper is to study the effect of new air backwash on dead-end ultrafiltration of seawater with a pilot at semi-industrial scale (20 m3/day). To control membrane fouling, two different backwashes were used to clean the membrane: classical backwash (CB) and new air backwash (AB) that consists of injecting air into the membrane module before a classical backwash. To evaluate the efficiency of AB and CB, a resistance in series model was used to calculate each resistance: membrane (Rm), reversible (Rrev) and irreversible (Rirr). The variation of the seawater quality was considered by integrating the turbidity variation versus time. The results indicate clearly that AB was more performant than CB and frequency of AB/CB cycles was important to control membrane fouling. In this study, frequencies of 1/5 and 1/3 appear more efficient than 1/7 and 1/9. In addition, the operation conditions (flux and time of filtration) had an important role in maintaining membrane performance—whatever the variation of the seawater quality.
Clémence Cordier, Tarik Eljaddi, Nadjim Ibouroihim, Christophe Stavrakakis, Patrick Sauvade, et al.. Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater. Membranes, MDPI, 2020, 10 (4), pp.78. ⟨10.3390/membranes10040078⟩. ⟨hal-02891926⟩
Imen Khouni, Ghofrane Louhichi, Ahmed Ghrabi, Philippe Moulin. Efficiency of a coagulation/flocculation–membrane filtration hybrid process for the treatment of vegetable oil refinery wastewater for safe reuse and recovery. Process Safety and Environmental Protection, Elsevier, 2020, 135, pp.323-341. ⟨10.1016/j.psep.2020.01.004⟩. ⟨hal-02456585⟩ Plus de détails...
Imen Khouni, Ghofrane Louhichi, Ahmed Ghrabi, Philippe Moulin. Efficiency of a coagulation/flocculation–membrane filtration hybrid process for the treatment of vegetable oil refinery wastewater for safe reuse and recovery. Process Safety and Environmental Protection, Elsevier, 2020, 135, pp.323-341. ⟨10.1016/j.psep.2020.01.004⟩. ⟨hal-02456585⟩
Journal: Process Safety and Environmental Protection
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, IWA Publishing, 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, IWA Publishing, 2020, pp.wst2020052. ⟨10.2166/wst.2020.052⟩. ⟨hal-02481682⟩
Cordier Clémence, Killian Guyomard, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, et al.. Culture of Microalgae with Ultrafiltered Seawater : A Feasibility Study. SciMedicine Journal, Ital Publication, 2020, 2 (2). ⟨hal-02891956⟩ Plus de détails...
The culture of microalgae is important for the production and maintenance of bivalves. One of the major challenges is to maintain the reliability of microalgae forages over the long term. The aim of this work is to use Ultrafiltered (UF) seawater to cultivate them. Thus, cultures in a volume of 300 L of 2 species of microalgae Tetraselmis and T-isochrysis, were monitored in UF water (membrane pore size: 20 nm) and in sea water usually used on the Ifremer mollusk experimental platform of Bouin (France) (Prefiltration, 3 filtrations and 2 UV). The major result is the securing of microlagae cultures with the absence of parasites in all cultures supplied with ultrafiltered water, unlike analyses of the various control cultures. In the case of T-isochrysis, 3 cultures out of 4 resulted in higher microalgae concentrations, up to 30%, in ultrafiltered water thus bringing a benefit on the algal density. These conclusions and the ease of recovering water (linked to the reduction in treatment stages) allowed a transfer of technology. In fact the 300 L cultures hitherto carried out on the experimental platform are now produced in ultrafiltered water since early 2019.
Cordier Clémence, Killian Guyomard, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, et al.. Culture of Microalgae with Ultrafiltered Seawater : A Feasibility Study. SciMedicine Journal, Ital Publication, 2020, 2 (2). ⟨hal-02891956⟩
C. Savaro, J.P. Bonnet, M.V. Johansson, P. Perrier, I. Graur, et al.. Gas permeability in rarefied flow conditions for characterization of mineral membrane support. European Journal of Mechanics - B/Fluids, Elsevier, 2020, 79, pp.44-53. ⟨10.1016/j.euromechflu.2019.07.005⟩. ⟨hal-02335012⟩ Plus de détails...
Gas Permeability Measurement Technique (GPMT) has the advantage of being a non-destructive method, which is efficient in characterizing filtration membranes. Ceramic filtration membranes consist of successive layers of micro (support) to nano size (skin) pores. When gas flows through such a small scale structure, the molecular mean free path becomes comparable to the pore size. The Slip flow model, validated to describe the gas transport properties under rarefied flow conditions in a microchannel, is extended to porous media. The porous structure is modeled as a cluster of several identical cylindrical channels.
C. Savaro, J.P. Bonnet, M.V. Johansson, P. Perrier, I. Graur, et al.. Gas permeability in rarefied flow conditions for characterization of mineral membrane support. European Journal of Mechanics - B/Fluids, Elsevier, 2020, 79, pp.44-53. ⟨10.1016/j.euromechflu.2019.07.005⟩. ⟨hal-02335012⟩
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, Wiley, 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, Wiley, 2019, pp.1-10. ⟨10.1002/cjce.23688⟩. ⟨hal-02416179⟩
E. Joffrin, S. Abduallev, M. Abhangi, P. Abreu, V. Afanasev, et al.. Overview of the JET preparation for deuterium–tritium operation with the ITER like-wall. Nuclear Fusion, IOP Publishing, 2019, 59 (11), pp.112021. ⟨10.1088/1741-4326/ab2276⟩. ⟨hal-02882296⟩ Plus de détails...
For the past several years, the JET scientific programme (Pamela et al 2007 Fusion Eng. Des. 82 590) has been engaged in a multi-campaign effort, including experiments in D, H and T, leading up to 2020 and the first experiments with 50%/50% D–T mixtures since 1997 and the first ever D–T plasmas with the ITER mix of plasma-facing component materials. For this purpose, a concerted physics and technology programme was launched with a view to prepare the D–T campaign (DTE2). This paper addresses the key elements developed by the JET programme directly contributing to the D–T preparation. This intense preparation includes the review of the physics basis for the D–T operational scenarios, including the fusion power predictions through first principle and integrated modelling, and the impact of isotopes in the operation and physics of D–T plasmas (thermal and particle transport, high confinement mode (H-mode) access, Be and W erosion, fuel recovery, etc). This effort also requires improving several aspects of plasma operation for DTE2, such as real time control schemes, heat load control, disruption avoidance and a mitigation system (including the installation of a new shattered pellet injector), novel ion cyclotron resonance heating schemes (such as the threeions scheme), new diagnostics (neutron camera and spectrometer, active Alfvèn eigenmode antennas, neutral gauges, radiation hard imaging systems…) and the calibration of the JET neutron diagnostics at 14 MeV for accurate fusion power measurement. The active preparation of JET for the 2020 D–T campaign provides an incomparable source of information and a basis for the future D–T operation of ITER, and it is also foreseen that a large number of key physics issues will be addressed in support of burning plasmas.
E. Joffrin, S. Abduallev, M. Abhangi, P. Abreu, V. Afanasev, et al.. Overview of the JET preparation for deuterium–tritium operation with the ITER like-wall. Nuclear Fusion, IOP Publishing, 2019, 59 (11), pp.112021. ⟨10.1088/1741-4326/ab2276⟩. ⟨hal-02882296⟩
E. Joffrin, S. Abduallev, M. Abhangi, P. Abreu, V. Afanasev, et al.. Overview of the JET preparation for deuterium–tritium operation with the ITER like-wall. Nuclear Fusion, IOP Publishing, 2019, 59 (11), pp.112021. ⟨10.1088/1741-4326/ab2276⟩. ⟨hal-02882296⟩ Plus de détails...
E. Joffrin, S. Abduallev, M. Abhangi, P. Abreu, V. Afanasev, et al.. Overview of the JET preparation for deuterium–tritium operation with the ITER like-wall. Nuclear Fusion, IOP Publishing, 2019, 59 (11), pp.112021. ⟨10.1088/1741-4326/ab2276⟩. ⟨hal-02882296⟩
E. Joffrin, S. Abduallev, M. Abhangi, P. Abreu, V. Afanasev, et al.. Overview of the JET preparation for deuterium-tritium operation with the ITER like-wall Recent citations. Nuclear Fusion, IOP Publishing, 2019, 59 (11), pp.112021. ⟨10.1088/1741-4326/ab2276⟩. ⟨hal-02459726⟩ Plus de détails...
E. Joffrin, S. Abduallev, M. Abhangi, P. Abreu, V. Afanasev, et al.. Overview of the JET preparation for deuterium-tritium operation with the ITER like-wall Recent citations. Nuclear Fusion, IOP Publishing, 2019, 59 (11), pp.112021. ⟨10.1088/1741-4326/ab2276⟩. ⟨hal-02459726⟩
Martin Victor Johansson, Fabrice Testa, Pierre Perrier, Jérôme Vicente, Jean Philippe Bonnet, et al.. Determination of an effective pore dimension for microporous media. International Journal of Heat and Mass Transfer, Elsevier, 2019, 142, pp.118412. ⟨10.1016/j.ijheatmasstransfer.2019.07.062⟩. ⟨hal-02196396⟩ Plus de détails...
The transient method of the mass flow rate and permeability measurements through a microporous media, developed previously, is used here to extract different characteristics of the media. By implementing the model of porous media as a bundle of capillaries the effective pore dimension is extracted from the measurements, and its physical interpretation is given. This methodology shows promising results to be used as a non-destructive method of micro-and-nanoporous media analysis. The permeability is also extracted directly from the measurements of the pressure variation in time. By using additional information about the sample porosity, the number of capillaries, the tortuosity and the internal surface of the sample are calculated. The extracted values are very close to that obtained by the mercury porosimetry and by microtomography.
Martin Victor Johansson, Fabrice Testa, Pierre Perrier, Jérôme Vicente, Jean Philippe Bonnet, et al.. Determination of an effective pore dimension for microporous media. International Journal of Heat and Mass Transfer, Elsevier, 2019, 142, pp.118412. ⟨10.1016/j.ijheatmasstransfer.2019.07.062⟩. ⟨hal-02196396⟩
Journal: International Journal of Heat and Mass Transfer
Xueru Yan, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Ionic liquids combined with membrane separation processes: A review. Separation and Purification Technology, Elsevier, 2019, 222, pp.230-253. ⟨10.1016/j.seppur.2019.03.103⟩. ⟨hal-02119807⟩ Plus de détails...
Thomas La Rocca, Emilie Carretier, Didier Dhaler, Eric Louradour, Thien Truong, et al.. Purification of Pharmaceutical Solvents by Pervaporation through Hybrid Silica Membranes. Membranes, MDPI, 2019, 9 (7), pp.76. ⟨10.3390/membranes9070076⟩. ⟨hal-02335018⟩ Plus de détails...
Solvents purification mainly used in pharmaceutical field such as acetone and methyl ethyl ketone (MEK) were performed through hybrid silica membranes and from binary and multi-components mixtures. Two hybrid silica membranes—zirconia doped bis(triethoxysilyl)methane and bis(triethoxysilyl)ethane (BTESE)—were studied. Flux, permeance, and separation factor were evaluated depending on temperature, composition, and number of organic compounds in the feed. Dehydration tests of acetone were operated at 30 and 45 °C following by acetone and MEK purification at 50 °C from multi-components hydro-organic mixtures where hydrophilic compounds (water, methanol) but also hydrophobic (dichloromethane (DCM) and/or toluene) were present. Results showed that the presence of Zr nanoparticles affected flux and improved selectivity in the case of dehydration. Experiments related to acetone and MEK purification, revealed a mass transfer alteration and a decrease of performance, from 99 to 97 wt% and from 98 to 95 wt% respectively, when the number of compounds in the initial feed grown up and more precisely, in the presence of DCM and toluene thus highlighting a possible coupling effect.
Thomas La Rocca, Emilie Carretier, Didier Dhaler, Eric Louradour, Thien Truong, et al.. Purification of Pharmaceutical Solvents by Pervaporation through Hybrid Silica Membranes. Membranes, MDPI, 2019, 9 (7), pp.76. ⟨10.3390/membranes9070076⟩. ⟨hal-02335018⟩
Xueru Yan, Alexandre Favard, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Effects of Operating Parameters on Ionic Liquid Membrane to Remove Humidity in a Green Continuous Process. Membranes, MDPI, 2019, 9 (5), pp.65. ⟨10.3390/membranes9050065⟩. ⟨hal-02335020⟩ Plus de détails...
Membrane processes are promising methods to separate gases from feed streams without phase changing. A hybrid process, the combination of ionic liquids with a ceramic membrane (ILM), has been developed for humidity removal in a green continuous process. This new concept provides a more efficient and available ionic liquid (IL)-based membrane regeneration process, which just switches the moist feed stream to dry air. Furthermore, the ILM presents high stability and mechanical resistance during long-time operation. In addition, the influences of several operating parameters, including flow rate, temperature, absolute pressure, and feed concentration on process efficiency were investigated. The lower inlet flow rate was found to be favorable for drying humid air. Moreover, when the pressure increased, the mass of absorbed water was increased, while the feed concentration had no significant effects on the membrane separation performance. However, the operating temperature had a great effect on humidity removal. It is necessary to note that the processes at room temperature can limit the energy consumption. The absorbing process of ILM remained efficient after several absorption desorption cycles. Therefore, the new ILM hybrid process that has been developed has great potential for consecutive humidity removal processes.
Xueru Yan, Alexandre Favard, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Effects of Operating Parameters on Ionic Liquid Membrane to Remove Humidity in a Green Continuous Process. Membranes, MDPI, 2019, 9 (5), pp.65. ⟨10.3390/membranes9050065⟩. ⟨hal-02335020⟩
Clémence Cordier, Lisa Charpin, Christophe Stavrakakis, Mathias Papin, Killian Guyomard, et al.. Ultrafiltration: A solution to recycle the breeding waters in shellfish production. Aquaculture, Elsevier, 2019, 504, pp.30-38. ⟨10.1016/j.aquaculture.2019.01.045⟩. ⟨hal-02177016⟩ Plus de détails...
Shellfish profession is jeopardized by water quality problem that concerns inlet, with the need to protect the animals from pathogens contaminations, and effluents potentially harmful for the environment with the presence of pathogens, nutrients or organic matter. In this study, ultrafiltration was tested to answer these issues. The objective of the work was two-fold: (i) treat a real effluent from an oyster breeding, the pilot had to continuously face a water containing organic matter and pathogens and (ii) use ultrafiltered water to feed an oyster spat. The process was proved to be efficient in terms of total suspended solids (TSS) and bacterial retention, and especially for Vibrio bacteria, some of whom are potentially harmful for shells. The sustainability of the process facing this pollution was demonstrated and thus for different filtration conditions. Indeed, backwashes and air-backwashes performed were efficient enough to control the fouling generated, so a chemical cleaning was necessary about every 12 h. Water quality parameters, physico-chemical and bacterial, of ultrafiltered effluents were similar to the one obtained with a classical seawater used to feed oyster spats. Ultrafiltration was efficient to treat an effluent from oyster farm and produce water allowing the grown of juveniles. This process could be a solution to reuse effluents in shellfish farms.
Clémence Cordier, Lisa Charpin, Christophe Stavrakakis, Mathias Papin, Killian Guyomard, et al.. Ultrafiltration: A solution to recycle the breeding waters in shellfish production. Aquaculture, Elsevier, 2019, 504, pp.30-38. ⟨10.1016/j.aquaculture.2019.01.045⟩. ⟨hal-02177016⟩
