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Artykuły w czasopismach na temat „Membranes modèle”

Autor: Grafiati

Data publikacji: 12 kwietnia 2025

Data aktualizacji: 31 lipca 2025

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1

Boucard, F., and A. Saboni. "Modélisation du transport des solutés neutres à travers des membranes de nanofiltration." Revue des sciences de l'eau 13, no. 4 (2005): 405–19. http://dx.doi.org/10.7202/705400ar.

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L'exclusion engendrée par la présence de membranes de nanofiltration est due à la superposition de plusieurs mécanismes. Aussi, il est important de pouvoir distinguer ces différents modes de transports afin de les comprendre et de proposer des modèles adéquats. Cette étude s'attachera uniquement à la compréhension du transport de solutés neutres à travers des membranes de ce type. Trois sucres, le glucose, le saccharose et le raffinose, ont été utilisés pour caractériser deux membranes organiques fournies par la société Osmonics. Ce travail montre qu'un modèle simple, basé sur la diffusion, te

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Malériat, J. P., P. Jaouen, N. Rossignol, J. P. Schlumpf, and F. Quemeneur. "Influence de l'adsorption d'alginates sur les propriétés de membranes organiques d'ultra et de microfiltration." Revue des sciences de l'eau 13, no. 3 (2005): 269–87. http://dx.doi.org/10.7202/705394ar.

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Les applications potentielles des cultures de microalgues et cyanobactéries en dépollution d'effluents dans des photobioréacteurs à membrane souffrent de performances limitées par un colmatage de l'élément filtrant dû en grande partie aux exopolysaccharides sécrétés par ces micro-organismes. Cette étude du laboratoire quantifie les effets de l'adsorption de ces polysaccharides sur des membranes organiques d'ultra et microfiltration tangentielle de matériaux et charges de surface différents. L'alginate de sodium est utilisé comme adsorbat modèle. Les membranes propres sont d'abord testées par u

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Pelletier, Émilien, and Peter G. C. Campbell. "L’écotoxicologie aquatique - comparaison entre les micropolluants organiques et les métaux : constats actuels et défis pour l’avenir." Revue des sciences de l'eau 21, no. 2 (2008): 173–97. http://dx.doi.org/10.7202/018465ar.

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Résumé Nous explorons dans cette synthèse les forces et les faiblesses de l’écotoxicologie, en nous limitant aux milieux aquatiques. Notre approche consiste à comparer et contraster le comportement des contaminants organiques et inorganiques (métalliques) et à identifier quelques défis pour l’avenir. La prise en charge des contaminants organiques de synthèse se produit le plus souvent par simple diffusion passive au travers d’une membrane cellulaire. Vu la nature lipidique des membranes biologiques, le coefficient de partage octanol-eau (Kow) du contaminant s’avère souvent un bon prédicteur de

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Rheinstädter, M. C., and T. Salditt. "La dynamique collective des membranes bicouches de modèle étudié par diffusion inélastique de neutrons." Journal de Physique IV (Proceedings) 130 (November 2005): 141–51. http://dx.doi.org/10.1051/jp4:2005130010.

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Hatoum, Maher, Jean François Fabre, Joel Albet, Claire Vialle, Caroline Sablayrolles, and Pierre Yves Pontalier. "Intégration de la simulation de l’ingénierie des processus et de l’évaluation du cycle de vie pour la modélisation de l’impact environnemental de la filtration membranaire." MATEC Web of Conferences 407 (2025): 02001. https://doi.org/10.1051/matecconf/202540702001.

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Le développement des procédés de bioraffinerie nécessite des outils d’éco-conception efficaces afin de démontrer leur réel intérêt écologique tout en minimisant le temps d’acquisition des données permettant l’extrapolation industrielle. L’objet de cet article concerne un de ces outil combinant l’ingénierie des systèmes de procédés (ISP) avec la méthodologie de l’analyse de cycle de vie (ACV) afin d’optimiser un procédé ou une opération unitaire en tenant compte des performances techniques et environnementales. En effet, l’ISP ne permet pas la simulation de toutes les opérations unitaires impli

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6

Podbilewicz, Benjamin. "Membrane fusion as a morphogenetic force in nematode development." Nematology 2, no. 1 (2000): 99–111. http://dx.doi.org/10.1163/156854100508818.

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AbstractIn Caenorhabditis elegans almost all the epithelial cells fuse to form permanent syncytia. Cells in the vulva and hypodermis fuse autonomously to produce ring shaped cells with defined structures and functions. Analysis of temporal and spatial sequence of events together with ultrastructural characterisation of cell fusion intermediates show that fusion pores in specific domains of the membranes dilate and subsequently vesicles are formed. The fusomorphogenetic hypothesis states that these vesicles are targeted to different domains of the plasma membrane where they fuse, thereby causin

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Schaetzel, Pierre, and Bernard Auclair. "Confrontation de l'équation de nernst-planck de diffusion-convection (dans le modèle homogène) avec les résultats experimentaux obtenus sur plusieurs membranes échangeuses d'ions." European Polymer Journal 24, no. 8 (1988): 719–22. http://dx.doi.org/10.1016/0014-3057(88)90004-3.

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8

Huang, Jian Ping, Yu Min Shao, Li Li Liu, and Chun Yan Ma. "Comparative Study on Anti-Fouling Properties and Application of Two PVDF Blend Membranes in Wastewater Treatment." Advanced Materials Research 550-553 (July 2012): 2164–69. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.2164.

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The filtration experiments of two PVDF blending membranes were performed. The critical fluxes of PVDF/PMMA and PVDF/TPU blend membranes were measured by the flux-step method. Then tubular membrane module PVDF/PMMA and PVDF/TPU were used to treat alcohol wastewater. The anti-fouling properties of PVDF/TPU membrane module were better than those of PVDF/PMMA membrane module. The critical fluxes of PVDF/PMMA and PVDF/TPU membrane modules were 24 L/(m2∙h) and 22 L/(m2∙h), respectively. In the alcohol wastewater treatment, TMP and SJ of the tested membranes remained stable during this period and mem

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9

Seshimo, Masahiro, Hiromi Urai, Kazuaki Sasa, et al. "Bench-Scale Membrane Reactor for Methylcyclohexane Dehydrogenation Using Silica Membrane Module." Membranes 11, no. 5 (2021): 326. http://dx.doi.org/10.3390/membranes11050326.

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Methylcyclohexane-toluene system is one of the most promising methods for hydrogen transport/storage. The methylcyclohexane dehydrogenation can be exceeded by the equilibrium conversion using membrane reactor. However, the modularization of the membrane reactor and manufacturing longer silica membranes than 100 mm are little developed. Herein, we have developed silica membrane with practical length by a counter-diffusion chemical vapor deposition method, and membrane reactor module bundled multiple silica membranes. The developed 500 mm-length silica membrane had high hydrogen permselective pe

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10

Zhu, Xue Feng, Ming Yuan Zhou, Zhi Wei Wang, Wen Yi Yuan, and Jie Guan. "Study on the Membrane Fouling of the Process of Using Two Layer Flat-Sheet Membrane for Sludge Thickening and Water Reuse." Applied Mechanics and Materials 768 (June 2015): 467–75. http://dx.doi.org/10.4028/www.scientific.net/amm.768.467.

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In this paper, the critical flux was applied to represent the tendency of membrane fouling. The response surface model was used to study different factors, such as sludge concentration, space between membranes and aeration rate, affecting membrane fouling of the upper and lower layer membrane module. It was found that the model is fitting and significant, moreover, the sludge concentration, space between membranes and aeration rate has a significant impact on the upper and lower membrane fouling. Meanwhile, it was also observed that the critical flux of both upper and lower layer membrane modu

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11

Jareonsri, L., S. Nawalertpanya, and W. Jantaporn. "Preparation and Characterization of Novel Membrane from Waste Polyethylene terephthalate and Bio-based Polymer." IOP Conference Series: Materials Science and Engineering 1280, no. 1 (2023): 012010. http://dx.doi.org/10.1088/1757-899x/1280/1/012010.

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Abstract A large amount of post-consumer Polyethylene terephthalate (PET) bottle waste could be recycled for downstream products. In this work, used PET bottles were utilized as a raw material to develop environmentally-friendly ultrafiltration membranes by phase inversion technique. Poly(ethylene-2,5-furandicarboxylate) (PEF), prepared from a sustainable bio-based monomer, 2,5-furandicarboxylic acid (FDCA), was blended into rPET matrix to improve the mechanical properties of the membrane. Ethanol was also used as a non-solvent in a coagulation bath and polyethylene glycol (PEG) with a molecul

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12

Arahman, Nasrul, Sri Mulyati, Afrillia Fahrina, et al. "Improving Water Permeability of Hydrophilic PVDF Membrane Prepared via Blending with Organic and Inorganic Additives for Humic Acid Separation." Molecules 24, no. 22 (2019): 4099. http://dx.doi.org/10.3390/molecules24224099.

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The removal of impurities from water or wastewater by the membrane filtration process has become more reliable due to good hydraulic performance and high permeate quality. The filterability of the membrane can be improved by having a material with a specific pore structure and good hydrophilic properties. This work aims at preparing a polyvinylidene fluoride (PVDF) membrane incorporated with phospholipid in the form of a 2-methacryloyloxyethyl phosphorylcholine, polymeric additive in the form of polyvinylpyrrolidone, and its combination with inorganic nanosilica from a renewable source derived

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13

Liu, Y. L., J. B. Fan, R. T. Wu, Y. Cao, and L. W. Jin. "Influence of structural parameters on dehumidification efficiency of cross-flow elliptic membrane modules." IOP Conference Series: Earth and Environmental Science 1500, no. 1 (2025): 012044. https://doi.org/10.1088/1755-1315/1500/1/012044.

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Abstract Membrane technology presents an energy-efficient alternative to traditional dehumidification methods, such as refrigeration-based systems. This research introduces a novel approach by developing membranes with elliptical cross-section, optimizing surface area for mass transfer of water vapor without significantly increasing module volume. The flow and mass transfer characteristics of humid air across the elliptical fiber membrane bundles were investigated by numerical simulations. A comparative analysis was conducted to evaluate the dehumidification performance enhancement of elliptic

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14

Da Conceicao, Marcos, Leo Nemetz, Joanna Rivero, Katherine Hornbostel, and Glenn Lipscomb. "Gas Separation Membrane Module Modeling: A Comprehensive Review." Membranes 13, no. 7 (2023): 639. http://dx.doi.org/10.3390/membranes13070639.

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Membrane gas separation processes have been developed for diverse gas separation applications that include nitrogen production from air and CO2 capture from point sources. Membrane process design requires the development of stable and robust mathematical models that can accurately quantify the performance of the membrane modules used in the process. The literature related to modeling membrane gas separation modules and model use in membrane gas separation process simulators is reviewed in this paper. A membrane-module-modeling checklist is proposed to guide modeling efforts for the research an

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15

Nalatambi, S., K. S. Oh, and L. W. Yoon. "Fabrication technique of composite chitosan/alginate membrane module for greywater treatment." Journal of Physics: Conference Series 2120, no. 1 (2021): 012037. http://dx.doi.org/10.1088/1742-6596/2120/1/012037.

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Abstract A novel chitosan/alginate composite membrane is proposed for the application of greywater treatment. In particular, the effect of stirring speed of mixing chitosan and alginate solution was investigated in this study. The study revealed that 150CSAL and 210CSAL membranes swell significantly compared to CS membrane due to the porous structure of composite membrane. The FTIR spectra revealed that the mixing speed has no influence in terms of molecular interaction between CS and AL due to fixed CS and AL concentrations used in this study. On the other hand, the complexation of AL with CS

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16

Lim, Joowan, Kwang Pyo Son, Seung Mo Kang, et al. "Restoration of the Performance of Membranes Fouled and Wetted in a Pilot-scale Membrane Distillation Process." Journal of Korean Society of Environmental Engineers 46, no. 11 (2024): 676–86. http://dx.doi.org/10.4491/ksee.2024.46.11.676.

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Objectives : The fouling and wetting of membranes in membrane distillation processes can significantly reduce membrane performance, thereby affecting overall process efficiency. The purpose of this study is to develop methods for restoring the performance of membranes used in a membrane distillation pilot plant operated in the Middle East by testing and optimizing various cleaning methods. This aims to maintain the long-term performance and improve the operational efficiency of the pilot plant through the reuse of restored membranes.Methods : To analyze the main fouling substances on the hollo

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17

Voitik, O. L., K. I. Delendik, and N. V. Kolyago. "Gas separation processes in a diffusion module based on anodic aluminum oxide membrane elements." Doklady of the National Academy of Sciences of Belarus 65, no. 6 (2021): 749–54. http://dx.doi.org/10.29235/1561-8323-2021-65-6-749-754.

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Anodic alumina membranes with an ordered microstructure have been synthesized and investigated. It was found that Knudsen diffusion is the predominant mechanism for gas penetration through the obtained membranes. The technology made it possible to obtain porous membranes with specified structural characteristics for the separation of gas mixtures. Designs of a diffusion element and a gas separation module based on membranes made of anodic aluminum oxide have been developed, and the features of mass transfer under various operating conditions have been studied. The membrane module without recir

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18

Keucken, A., Y. Wang, K. H. Tng, et al. "Evaluation of novel hollow fibre membranes for NOM removal by advanced membrane autopsy." Water Supply 16, no. 3 (2015): 628–40. http://dx.doi.org/10.2166/ws.2015.170.

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A full-scale inside out hollow fibre membrane module was operated in a pilot-scale water treatment plant in Sweden for a period of 12 months from August 2013 to July 2014. Liquid chromatography– organic carbon detection (LC-OCD) chromatogram indicated the membranes could effectively remove 86% of dissolved organic carbon and 92% of humic substances from the feedwater. Routine cleaning-in-place was conducted to remove any fouling material accumulated on the membranes. Autopsy of the aged membrane samples after 12 months’ operation suggested no significant changes were detected for the membrane

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19

Mesquita, Cristiane Raquel Sousa, Abdul Orlando Cárdenas Gómez, Carolina Palma Naveira Cotta, and Renato Machado Cotta. "Comparison of Different Polymeric Membranes in Direct Contact Membrane Distillation and Air Gap Membrane Distillation Configurations." Membranes 15, no. 3 (2025): 91. https://doi.org/10.3390/membranes15030091.

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Membrane distillation (MD) is an evolving thermal separation technique most frequently aimed at water desalination, compatible with low-grade heat sources such as waste heat from thermal engines, solar collectors, and high-concentration photovoltaic panels. This study presents a comprehensive theoretical–experimental evaluation of three commercial membranes of different materials (PE, PVDF, and PTFE), tested for two distinct MD modules—a Direct Contact Membrane Distillation (DCMD) module and an Air Gap Membrane Distillation (AGMD) module—analyzing the impact of key operational parameters on th

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Goh, Li May, Zhiwei Thong, Weikun Paul Li, et al. "Development and Industrial-Scale Fabrication of Next-Generation Low-Energy Membranes for Desalination." Membranes 12, no. 5 (2022): 540. http://dx.doi.org/10.3390/membranes12050540.

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Spiral-wound modules have been the most common configuration of packing flat-sheet membranes since the early development of polyamide (PA) membranes for water treatment applications. Conventional spiral-wound modules (SWMs) for desalination applications typically consist of several leaf sets, with each leaf set comprising feed spacers, membranes, and a permeate carrier (PC) wrapped around a permeate-collecting tube. The membrane area that can be packed into a given module diameter is limited by the overall leaf set thickness, restricting module productivity for a given membrane permeability. W

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21

Szerencsés, Sz Gy, S. Beszédes, Zs László, et al. "Assessment of vibration amplitude and transmembrane pressure on vibratory shear enhanced membrane filtration for treating dairy wastewater." Acta Alimentaria 50, no. 1 (2021): 42–53. http://dx.doi.org/10.1556/066.2020.00123.

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AbstractIn this study, statistical analysis was performed to investigate the influence of operational parameters based on experimental results. The research aimed to know whether a long-term discontinuous module vibration operation is possible without adversely affecting filtration efficiency. Polymer membranes were compared by surface characteristics with contact angle measurements and selected for further membrane filtration experiments for dairy wastewater treatment. The effect of the main operational parameters, membrane module vibration amplitude (Avibr.) and transmembrane pressure (TMP),

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Alhathal Alanezi, Adnan, H. Abdallah, E. El-Zanati, Adnan Ahmad, and Adel O. Sharif. "Performance Investigation of O-Ring Vacuum Membrane Distillation Module for Water Desalination." Journal of Chemistry 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/9378460.

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A new O-ring flat sheet membrane module design was used to investigate the performance of Vacuum Membrane Distillation (VMD) for water desalination using two commercial polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVDF) flat sheet hydrophobic membranes. The design of the membrane module proved its applicability for achieving a high heat transfer coefficient of the order of 103 (W/m2 K) and a high Reynolds number (Re). VMD experiments were conducted to measure the heat and mass transfer coefficients within the membrane module. The effects of the process parameters, such as the fe

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Tomczak, Wirginia, and Marek Gryta. "Membrane Distillation of Saline Water Contaminated with Oil and Surfactants." Membranes 11, no. 12 (2021): 988. http://dx.doi.org/10.3390/membranes11120988.

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Application of the membrane distillation (MD) process for the treatment of high-salinity solutions contaminated with oil and surfactants represents an interesting area of research. Therefore, the aim of this study is to investigate the effect of low-concentration surfactants in oil-contaminated high-salinity solutions on the MD process efficiency. For this purpose, hydrophobic capillary polypropylene (PP) membranes were tested during the long-term MD studies. Baltic Sea water and concentrated NaCl solutions were used as a feed. The feed water was contaminated with oil collected from bilge wate

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Neto, Guilherme Luiz Oliveira, Nívea Gomes Nascimento de Oliveira, Francisco Alves Batista, et al. "Water-Oil Separation Process Using a Porous Ceramic Membrane Module: An Investigation by CFD." Defect and Diffusion Forum 407 (March 2021): 22–30. http://dx.doi.org/10.4028/www.scientific.net/ddf.407.22.

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Environmental concern has encouraged development related to polluted water treatment. Produced water originated from oil exploration has been submitted to different separation processes such as settling tanks, floaters, two-phase and three-phase separators, hydrocyclones, and membranes. On the use of membranes, the goal is to separate soluble components from solutions based on the size, charge, shape, and molecular interactions between the solute and membrane surface. In the present work, a numerical study was developed on the oil-water mixture separation process using a porous ceramic membran

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Ando, Hideaki, and Hiroshi Hamada. "High.density Membrane Module for MBR." MEMBRANE 47, no. 3 (2022): 177–80. http://dx.doi.org/10.5360/membrane.47.177.

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Razi, Fachrul, Sri Mulyati, and Nasrul Arahman. "The performance of bovine serum albumin filtration by using polyethersulfone-Tetronic 304 blend Ultrafiltration Membrane." F1000Research 8 (November 7, 2019): 953. http://dx.doi.org/10.12688/f1000research.18740.2.

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Background: Membrane technology has been widely applied for protein purification. In applications for protein separation, a membrane with stable filtration performance is necessary. In this work, two types of hollow fiber membranes with different characteristic were used to study the filtration profile of bovine serum albumin. Methods: A single piece of hollow fiber module was used for ultrafiltration testing using UF0 and UFT304 membranes. Flux and rejection of BSA solution were collected based on a pressure-driven inside filtration model. Results: Ultrafiltration experiments showed that the

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Gryta, Marek. "Capillary Polypropylene Membranes for Membrane Distillation." Fibers 7, no. 1 (2018): 1. http://dx.doi.org/10.3390/fib7010001.

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Only nonwetted porous membranes can be used in membrane distillation. The possibility of application in this process the capillary polypropylene membranes manufactured by thermally-induced phase separation was studied. The performance of a few types of membranes available commercially was presented. The resistance of the membranes to wetting was tested in the continuous process of water desalination. These studies were carried out for 1000 h without module cleaning. The presence of scaling layer on the membranes surface was confirmed by Scanning Electron Microscope observations. Both the perme

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Schopf, Roland, Florian Schmidt, Johanna Linner, and Ulrich Kulozik. "Comparative Assessment of Tubular Ceramic, Spiral Wound, and Hollow Fiber Membrane Microfiltration Module Systems for Milk Protein Fractionation." Foods 10, no. 4 (2021): 692. http://dx.doi.org/10.3390/foods10040692.

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The fractionation efficiency of hollow fiber membranes (HFM) for milk protein fractionation was compared to ceramic tubular membranes (CTM) and spiral wound membranes (SWM). HFM combine the features of high membrane packing density of SWM and the more defined flow conditions and better control of membrane fouling in the open flow channel cross-sections of CTM. The aim was to comparatively analyze the effect of variations in local pressure and flow conditions while using single industrially sized standard modules with similar dimensions and module footprints (module diameter and length). The co

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Kim, Do Hee, Kyoung Woong Kim, and Jaeweon Cho. "Removal and transport mechanisms of arsenics in UF and NF membrane processes." Journal of Water and Health 4, no. 2 (2006): 215–23. http://dx.doi.org/10.2166/wh.2006.0018.

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In this study, the removal and transport mechanisms of ionized and non-ionized arsenics through NF and UF membranes were systemically investigated. The charge repulsion between the membrane surface and arsenic ions was an important mechanism for the rejection of ions by a charged membrane. In addition, the effect of J0/k ratio was dependent on the membrane and ion charge, but the cross-flow velocity was not significantly affected. Both diffusion and convection are proved to affect the transport of arsenic ions. The reflection coefficients (σ) of both UF and NF membranes increased with increasi

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Bopape, Mokgadi F., Tim Van Geel, Abhishek Dutta, Bart Van der Bruggen, and Maurice Stephen Onyango. "Numerical Modelling Assisted Design of a Compact Ultrafiltration (UF) Flat Sheet Membrane Module." Membranes 11, no. 1 (2021): 54. http://dx.doi.org/10.3390/membranes11010054.

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The increasing adoption of ultra-low pressure (ULP) membrane systems for drinking water treatment in small rural communities is currently hindered by a limited number of studies on module design. Detailed knowledge on both intrinsic membrane transport properties and fluid hydrodynamics within the module is essential in understanding ULP performance prediction, mass transfer analysis for scaling-up between lab-scale and industrial scale research. In comparison to hollow fiber membranes, flat sheet membranes present certain advantages such as simple manufacture, sheet replacement for cleaning, m

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Zhou, Yukang, Long Chen, Mengtao Huang, Weilian Hu, Guicai Chen, and Binxin Wu. "Experimental Investigation of the Desalination Process for Direct Contact Membrane Distillation Using Plate and Frame Membrane Module." Applied Sciences 13, no. 16 (2023): 9439. http://dx.doi.org/10.3390/app13169439.

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Through experiments, the effect of membrane material selection and operating conditions on permeate fluxes in direct contact membrane distillation (DCMD) desalination was investigated. The experiment used a plate and frame membrane module, and with nine different hydrophobic porous membranes, a comparative analysis of the desalination performance of 3 wt% NaCl solution was performed. The results of this experiment were compared to find out the effect of different materials, pore sizes and membrane thicknesses on the permeate flux under same operating conditions. Further, a three-factor, three-

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Razi, Fachrul, Sri Mulyati, and Nasrul Arahman. "The performance of bovine serum albumin filtration by using polyethersulfone-Tetronic 304 blend Ultrafiltration Membrane." F1000Research 8 (June 24, 2019): 953. http://dx.doi.org/10.12688/f1000research.18740.1.

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Background: Membrane technology has been widely applied for protein purification. In applications for protein separation, a membrane with stable filtration performance is necessary. In this work, two types of hollow fiber membranes with different characteristic were used to study the filtration profile of bovine serum albumin. Methods: A single piece of hollow fiber module was used for ultrafiltration testing using UF0 and UFT304 membranes. Flux and rejection of BSA solution were collected based on a pressure-driven inside filtration model. Results: Ultrafiltration experiments showed that the

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Fedotov, Yu A., A. V. Tarasov, Yu A. Rakhmanin, et al. "Possibility of Using Modified Polyamide Membranes for Virus Concentration for the Purposes of Sanitary-Virological Analysis of Water." Eurasian Chemico-Technological Journal 14, no. 3 (2012): 233. http://dx.doi.org/10.18321/ectj119.

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The results of investigations of modified polyamide microfiltration membranes application in the concentration of viruses and bacteriophages during sanitary virological monitoring of water bodies are presented in this paper. The analysis of developments in the control of viral contamination of different origins water bodies is given. Viruses presented in the water in small amounts can cause disease. It is shown that an important step is viral concentration from large amounts of water for its identification. The possibility of positively charged microfiltration membranes application in the conc

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Fane, A. G., P. Beatson, and H. Li. "Membrane fouling and its control in environmental applications." Water Science and Technology 41, no. 10-11 (2000): 303–8. http://dx.doi.org/10.2166/wst.2000.0667.

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Fouling is an issue in the application of membranes to environmental management. This paper describes recent developments in fouling analysis and membrane autopsy. Methods of fouling control are described with examples of feed pretreatment, membrane selection, module design and selection and mode of operation.

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Pervov, Alexey G., and Dmitriy V. Spitsov. "Reducing operating costs through modernization of reverse osmosis facilities used to produce drinking water." Vestnik MGSU, no. 5 (May 2022): 628–45. http://dx.doi.org/10.22227/1997-0935.2022.5.628-645.

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Introduction. The authors address problems of operation of reverse osmosis facilities, used to treat ground water and produce drinking water; they also focus on operating cost reduction strategies. Nanofiltration membranes may reduce operating costs, concentrate consumption, and sedimentation. A smaller antiscalant dosage can also reduce the cost of chemicals. The purpose of this research is to evaluate the ecological and economic efficiency of the new technique. Materials and methods. The authors conducted groundwater treatment experiments to reduce groundwater hardness and ammonia cont

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Henmi, Masahiro, and Tadahiro Uemura. "PVDF Membrane Module For Membrane Bioreactor." MEMBRANE 30, no. 5 (2005): 282–85. http://dx.doi.org/10.5360/membrane.30.282.

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Subramaniam, M. N., and Z. Wu. "Grand Challenges in Fabrication of Nanocomposite Hollow Fiber Membranes." Journal of Applied Membrane Science & Technology 26, no. 3 (2022): 37–43. http://dx.doi.org/10.11113/amst.v26n3.251.

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Membrane processes allow scalable and energy-efficient separation of gas and liquid, advance low-carbon purifications in various industrial and environmental applications and enable more resilient economy and society. In pursuit of developing more advanced membranes with continuously improved separating performances, nanofillers have been commonly incorporated into membranes to upgrade membrane properties such as mechanical robustness, antifouling ability, and permeability etc., across all types of popular membrane geometries from flat sheet and spiral wound to hollow fiber. Nanofillers inside

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Albu, Paul Constantin, Szidonia-Katalin Tanczos, Andreea Ferencz (Dinu), et al. "pH and Design on n–Alkyl Alcohol Bulk Liquid Membranes for Improving Phenol Derivative Transport and Separation." Membranes 12, no. 4 (2022): 365. http://dx.doi.org/10.3390/membranes12040365.

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Regardless of the type of liquid membrane (LM) (Bulk Liquid Membranes (BLM), Supported Liquid Membranes (SLM) or Emulsion Liquid Membranes (ELM)), transport and separation of chemical species are conditioned by the operational (OP) and constructive design parameters (DP) of the permeation module. In the present study, the pH of the aqueous source phase (SP) and receiving phase (RP) of the proposed membrane system were selected as operational parameters. The mode of contacting the phases was chosen as the convective transport generator. The experiments used BLM-type membranes with spheres in fr

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Gryta, Marek, and Wirginia Tomczak. "Changes in Tubular PVDF Membrane Performance During Initial Period of Pilot Plant Operation." Membranes 15, no. 4 (2025): 119. https://doi.org/10.3390/membranes15040119.

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Ultrafiltration (UF) is increasingly used in the food industry and for wastewater treatment and water reuse. Knowledge of the membrane properties that stabilise during the initial period of module operation in an industrial plant is essential for design purposes. This paper presents the experimental tests carried out using a pilot plant with an industrial PCI B1 membrane module. The module was equipped with tubular FP100 (100 kDa) polyvinylidene fluoride (PVDF) membranes used to separate carwash wastewater. The effect of membrane compaction during the first few days of the process on changes i

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Yao, Ying, Wei Liu, Hui Feng Zhang, et al. "Research on the PVDF Hollow Fiber Gas Membrane Used for Bromine Extraction." Advanced Materials Research 217-218 (March 2011): 802–7. http://dx.doi.org/10.4028/www.scientific.net/amr.217-218.802.

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In this paper, several types of PVDF hollow fiber membranes used in the gas membrane separation process for extracting bromine from simulated seawater or concentrated seawater were studied. The micropore, hydrophobic property, mechanical strength and material chemistry of the PVDF membranes soaked in seawater or concentrated seawater were characterized by SEM-EDX, IR, contact angle testing instrument and electronic fabric strength tester, which were compared with those of origin membranes. At last, the mass transfer coefficient and flux during a long time were gained by operating a permeation

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Drago, Francesca, Paolo Fedeli, Angelo Cavaliere, et al. "Development of a Membrane Module Prototype for Oxygen Separation in Industrial Applications." Membranes 12, no. 2 (2022): 167. http://dx.doi.org/10.3390/membranes12020167.

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The integration of oxygen transport membranes in industrial processes can lead to energy and economic advantages, but proof of concept membrane modules are highly necessary to demonstrate the feasibility of this technology. In this work, we describe the development of a lab-scale module through a comprehensive study that takes into consideration all the relevant technological aspects to achieve a prototype ready to be operated in industrial environment. We employed scalable techniques to manufacture planar La0.6Sr0.4Co0.2Fe0.8O3-δ membrane components suitable for the application in both 3- and

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Okoro, Emmanuel E., Rachael Josephs, Samuel E. Sanni, and Yuven Nchila. "Advances in the Use of Nanocomposite Membranes for Carbon Capture Operations." International Journal of Chemical Engineering 2021 (June 18, 2021): 1–22. http://dx.doi.org/10.1155/2021/6666242.

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The adoption of nanodoped membranes in the areas of gas stream separation, water, and wastewater treatments due to the physical and operational advantages of such membranes has significantly increased. The literature has shown that the surface structure and physicochemical properties of nanodoped membranes contribute significantly to the interaction and rejection characteristics when compared to bare membranes. This study reviews the recent developments on nanodoped membranes, and their hybrids for carbon capture and gas separation operations. Features such as the nanoparticles/materials and h

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Kondo, Masakazu, Yasuo Matuo, Yosio Morigami, and Jun Abe. "Tubular-type pervaporation module with NaA membrane." membrane 23, no. 2 (1998): 95–99. http://dx.doi.org/10.5360/membrane.23.95.

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Ogawa, Takashi. "PVDF Submerged Type Membrane Module and Application." MEMBRANE 36, no. 1 (2011): 44–47. http://dx.doi.org/10.5360/membrane.36.44.

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Brown, Andrew J., Nicholas A. Brunelli, Kiwon Eum, et al. "Interfacial microfluidic processing of metal-organic framework hollow fiber membranes." Science 345, no. 6192 (2014): 72–75. http://dx.doi.org/10.1126/science.1251181.

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Molecular sieving metal-organic framework (MOF) membranes have great potential for energy-efficient chemical separations, but a major hurdle is the lack of a scalable and inexpensive membrane fabrication mechanism. We describe a route for processing MOF membranes in polymeric hollow fibers, combining a two-solvent interfacial approach for positional control over membrane formation (at inner and outer surfaces, or in the bulk, of the fibers), a microfluidic approach to replenishment or recycling of reactants, and an in situ module for membrane fabrication and permeation. We fabricated continuou

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Pientka, Zbyněk, Jakub Peter, and Robert Válek. "Membrane Unit for Integrated Gas Separation – Membrane Bioreactor (GS-MBR) System." Hungarian Journal of Industry and Chemistry 50, no. 1 (2022): 15–22. http://dx.doi.org/10.33927/hjic-2022-04.

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One of the research directions of renewable energy sources is the production of biohydrogen from the dark fermentation of organic matter. During this fermentation process, since hydrogen is produced along with a complex mixture of other gases and vapors, hydrogen gas requires further purification. One relatively easy solution to this problem might be the utilization of gas separation membrane modules given their low energy consumption, simple operation and ease of upscaling. In this work, hollow fiber (HF) membranes based on polyetherimide (PEI) were developed and tested. HF membranes were spu

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Hosseini, Seyed Saeid, Sara Najari, Prodip K. Kundu, Nicolas R. Tan, and Seyed Mehrdad Roodashti. "Simulation and sensitivity analysis of transport in asymmetric hollow fiber membrane permeators for air separation." RSC Advances 5, no. 105 (2015): 86359–70. http://dx.doi.org/10.1039/c5ra13943k.

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Development of advanced membranes requires deep insights about the process. Sensitivity analysis is performed to analyze the effects of module properties and process operational conditions on the performance of air separation membrane permeators.

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Zhao, Zhi Peng, Yue Feng Su, Mi Yi Li, and Wen Sheng Deng. "The Molecular Simulation Study of Optimum Blending Ratio for PVDF/PVC Membrane." Advanced Materials Research 968 (June 2014): 25–30. http://dx.doi.org/10.4028/www.scientific.net/amr.968.25.

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The PVDF/PVC blending membrane has a certain application in the field of sewage treatment. In this paper, the simulation study for the blending ratio of the PVDF/PVC membrane has been carried on, which has an influence on the membrane’s ability of sewage treatment. Firstly, the membrane models were constructed via Amorphous Cell module of MS (material studios) 6.0. Secondly, the optimization processes were achieved via Minimizer and MD (Molecular Dynamics) method of the Discover module. Lastly, the diffusion coefficients D was calculated indirectly through the Mean square displacement (MSD) ge

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Vanhaecke, T., P. A. Grohard, P. Aubert, et al. "Effet protecteur de l’administration de membranes du globule gras du lait et L. fermentum CECT 5716 sur les fonctions digestives et sur la réponse inflammatoire dans un modèle de rat nouveau-né." Nutrition Clinique et Métabolisme 31, no. 3 (2017): 221–22. http://dx.doi.org/10.1016/j.nupar.2017.06.015.

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Yoon, Sukmin, Young-Joo Lee, Seong-Su Kim, Han-Bong Choi, and No-Suk Park. "Research on Autopsy Results of over 10 Year Old Low Pressure Hollow Fiber Membrane from Domestic Water Treatment Plant." Journal of Korean Society of Environmental Engineers 44, no. 9 (2022): 287–97. http://dx.doi.org/10.4491/ksee.2022.44.9.287.

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Objectives : In this study, membrane autopsy was performed for a parallel arrayed low-pressure membrane (microfiltration) filtration process that is actually applied to water treatment, to check out whether there are differences in the degree of membrane fouling due to the uneven flow rate into each module. Also, membrane foulants were evaluated quantitatively.Methods : In this study, autopsy was performed for over 10 year old membranes used for drinking water purification. In this way, the outer casings of membrane modules at different positions were disassembled and visually observed. In add

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