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Articles de revues sur le sujet « Filtration à flux tangentiel »

Auteur : Grafiati

Publié le 22 février 2025

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1

Serrano, Michel, Anne-Claire Vannier, and Pascal Ribéreau-Gayon. "Clarification des vins par filtration en flux tangentiel (ultrafiltration). Incidence sur la composition chimique et les qualités organoleptiques. Evolution des produits au cours du vieillissement." OENO One 22, no. 1 (1988): 49. http://dx.doi.org/10.20870/oeno-one.1988.22.1.1256.

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<p style="text-align: justify;">Les auteurs étudient la clarification des vins en flux tangentiel avec un ultrafiltre pilote muni de membranes organiques. Les débits de perméat sont faibles (30 l x h<sup>-1</sup> x m<sup>-2</sup>) mais le colmatage peu important. Les pourcentages de retentat sont peu élevés (0,3 à 0,7 %). Les produits ainsi clarifiés présentent de faibles turbidités et des indices de colmatage très bas. Cette technique entraîne une rétention importante des polysaccharides et des composés phénoliques des vins rouges. Les qualités organoleptiques so

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Ben Amar, R., E. Ellouze, B. B. Gupta, and A. M. Ayad. "Traitement d'effluents de tannerie-mégisserie par microfiltration tangentielle." Revue des sciences de l'eau 14, no. 4 (2005): 445–64. http://dx.doi.org/10.7202/705427ar.

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Dans ce travail un procédé de traitement des effluents issus de l'unité de préparation des peaux des animaux au tannage (travail en rivière) en tannerie-mégisserie a été étudié en utilisant la technique de microfiltration tangentielle sur membrane minérale en céramique. Les performances de ce procédé en terme de flux de filtration et de rendement épuratoire dépendent aussi bien des paramètres hydrodynamiques de filtration que de la qualité des effluents (collectés en été et en printemps) issus des différents bains de traitement et de rinçage des peaux dans l'atelier de rivière. Le flux de filt

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3

Charfi, A., J. Harmand, N. Ben Amar, A. Grasmick, and M. Heran. "Deposit membrane fouling: influence of specific cake layer resistance and tangential shear stresses." Water Science and Technology 70, no. 1 (2014): 40–46. http://dx.doi.org/10.2166/wst.2014.186.

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Cake fouling is the leading cause of membrane permeability decrease when filtering mixed liquor suspension containing high suspended solid concentrations. A simple model is proposed to simulate the cake resistance evolution with time by considering a macro-scale fouling linked only to the accumulation of particles on the membrane surface. This accumulation appears as the difference between the flux of deposited particles due to the filtration and the flux of particles detached from the membrane surface due to the tangential shear stresses caused by recirculation flow in the sidestream membrane

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Lee, Jieun, Jiwon Na, and Youngbin Baek. "Effects of Impurities from Sugar Excipient on Filtrate Flux during Ultrafiltration and Diafiltration Process." Membranes 11, no. 10 (2021): 775. http://dx.doi.org/10.3390/membranes11100775.

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Sugar excipients such as sucrose and maltose are widely used for biopharmaceutical formulation to improve protein stability and to ensure isotonicity for administration. However, according to recent literature, pharmaceutical-grade sucrose contained nanoparticulate impurities (NPIs) that result in protein aggregation and degradation. The objective of this study was to evaluate the filtrate flux behavior of sugar solution during ultrafiltration (UF) and diafiltration (DF). Filtrate flux data were obtained using either a tangential flow filtration (TFF) system for DF experiments or a normal flow

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Sravan Kumar, Pillalamarri, Surabhi Goyal, and Amit Kumar. "Process Validation of Tangential Flow Filtration System for High Yield Drug Substance of Vaccine." Journal of Pharmaceutical Quality Assurance and Quality Control 4, no. 1 (2022): 5–12. http://dx.doi.org/10.46610/jqaqc.2022.v04i01.002.

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Objective: The objective of this work is to prove and validate Tangential Flow Filtration System for high yield drug substance of vaccine as product and also to provide the experimental insight for vaccine industrial personnel to acquire the knowledge on the process validation of the system to obtain high and consistent yield of the product. Methods: The method in this work involves the experimental determination of the process parameters for Tangential Flow Filtration system such as Trans-membrane pressure and flux including validation of these parameters to achieve the high yield drug substa

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Carvajal-Zarrabal, Octavio, Samantha Ling-Chee Siong, Mohammad Omar Abdullah, et al. "Recovery of Membrane Permeability after Filtration of Sago Starch Suspension by Tangential Flow Filtration." Journal of Applied Research and Technology 21, no. 3 (2023): 384–96. http://dx.doi.org/10.22201/icat.24486736e.2023.21.3.1814.

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Sago starch is extracted from the stems of the sago palm, Metroxylon sagu, in south-east Asia. Sago starch processing generates approximately 20 tons of starch containing effluents that can be recovered and marketed to sustain a small-scale industry. Tangential flow filtration (TFF) using microfiltration membranes (MFM) has been demonstrated as an effective method for separating suspended solids in biological effluents. When TFF was applied to concentrate sago starch suspensions (SSS), membrane permeability and lifecycle were impacted due to frequent fouling. This study evaluated cleaning meth

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Chan, See Yi, Kok Chung Chong, Woon Chan Chong, Soon Onn Lai, Yean Ling Pang, and Shee Keat Mah. "Effect of Flowrate and Pressure on the Crossflow Filtration in Textile Wastewater Treatment by Commercial UF Membrane." IOP Conference Series: Earth and Environmental Science 1303, no. 1 (2024): 012022. http://dx.doi.org/10.1088/1755-1315/1303/1/012022.

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Abstract Textile industries are one of the greatest wastewater producers as they require a significant amount of water to be used in the dyeing and finishing processes of textile manufacturing. The number of unit operations in the technological process, the product range, the bath ratio, the mass of fiber in relation to the bath volume, and the finishing machine are some variables that will affect water consumption in the textile industry. As a result, generally, a typical textile plant may consume a volume of water between 100,000 and 300,000 m3 annually. As textiles address a substantial por

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Dziubak, Tadeusz. "Experimental Investigation of Possibilities to Improve Filtration Efficiency of Tangential Inlet Return Cyclones by Modification of Their Design." Energies 15, no. 11 (2022): 3871. http://dx.doi.org/10.3390/en15113871.

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It has been shown that tangential inlet return cyclones are commonly used for inlet air filtration of off-road vehicle engines. The wear of the engine elements, and thus their durability, is determined by the efficiency and accuracy of the inlet air filtration. It has been shown that the possibilities of increasing the separation efficiency or decreasing the pressure drop of a cyclone by changing the main dimensions of the cyclone are limited, because any arbitrary change in one of the dimensions of an already operating cyclone may cause the opposite effect. A literature analysis of the possib

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Sivaprakash, Prabhavathy, and Sunando DasGupta. "Effect of air sparging on flux enhancement during tangential flow filtration of degreasing effluent." Desalination and Water Treatment 53, no. 1 (2013): 73–83. http://dx.doi.org/10.1080/19443994.2013.839400.

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Arkhangelsky, Elizabeth, Aimira Bazarbayeva, Arailym Kamal, Jong Kim, Vassilis Inglezakis, and Vitaly Gitis. "Tangential streaming potential, transmembrane flux, and chemical cleaning of ultrafiltration membranes." Separation and Purification Technology 258 (March 2021): 118045. http://dx.doi.org/10.1016/j.seppur.2020.118045.

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CHOI, H., K. ZHANG, D. DIONYSIOU, D. OERTHER, and G. SORIAL. "Effect of permeate flux and tangential flow on membrane fouling for wastewater treatment." Separation and Purification Technology 45, no. 1 (2005): 68–78. http://dx.doi.org/10.1016/j.seppur.2005.02.010.

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Batrinescu, Gheorghe, Roxana-Elena Scutariu, Nicolae-Ionut Cristea, Ioana-Alexandra Ionescu, and Gheorghe Nechifor. "The Clogging Effect in the Process of Protein Separation by Ultrafiltration." Materiale Plastice 57, no. 3 (2020): 224–37. http://dx.doi.org/10.37358/mp.20.3.5395.

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In this study, five ultrafiltration membranes (polysulfone, cellulose acetate and polyethe-rsulfone) were tested in the treatment of aqueous protein solutions similar to wastewater from fermentation industries. The experiments were made in tangential flow filtration. The permeate flux for the five membranes tested at the optimum pressure of 3 bar decreased due to the effect of clogging the pores by the macromolecular protein solutions. Cellulose acetate membranes showed the lowest permeate flux (Ac-Cel1=152.4 L/m2.h and Ac-Cel2=40.3 L/m2.h) which doesn�t recommend them for the ultrafiltration

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Lima, Rosa Carmo Oliveira, H. L. Lira, G. A. Neves, M. C. Silva, and K. B. França. "Use of Ceramic Membrane for Indigo Separation in Effluent from Textile Industry." Materials Science Forum 798-799 (June 2014): 537–41. http://dx.doi.org/10.4028/www.scientific.net/msf.798-799.537.

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The production of fabrics is one important sectors of the national economy, especially in jeans production. During dyeing step, in the production of jeans, it is generate a large amount of wastewater rich in indigo, a strong blue dye that when released directly into the environment is responsible for several environmental impacts. The aim of this work is to study the use of microfiltration ceramic membranes for indigo separation in effluents from textile industry. Initially the ceramic membranes were characterized in relation to the pore size and tangential flux. It was produced an indigo solu

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Chaubal, Akshay S., and Andrew L. Zydney. "Single-Pass Tangential Flow Filtration (SPTFF) of Nanoparticles: Achieving Sustainable Operation with Dilute Colloidal Suspensions for Gene Therapy Applications." Membranes 13, no. 4 (2023): 433. http://dx.doi.org/10.3390/membranes13040433.

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Recent approval of several viral-vector-based therapeutics has led to renewed interest in the development of more efficient bioprocessing strategies for gene therapy products. Single-Pass Tangential Flow Filtration (SPTFF) can potentially provide inline concentration and final formulation of viral vectors with enhanced product quality due. In this study, SPTFF performance was evaluated using a suspension of 100 nm nanoparticles that mimics a typical lentivirus system. Data were obtained with flat-sheet cassettes having 300 kDa nominal molecular weight cutoff, either in full recirculation or si

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Walther, Jason, Jean McLarty, and Timothy Johnson. "The effects of alternating tangential flow (ATF) residence time, hydrodynamic stress, and filtration flux on high‐density perfusion cell culture." Biotechnology and Bioengineering 116, no. 2 (2018): 320–32. http://dx.doi.org/10.1002/bit.26811.

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Loewe, Daniel, Tanja A. Grein, Hauke Dieken, Tobias Weidner, Denise Salzig, and Peter Czermak. "Tangential Flow Filtration for the Concentration of Oncolytic Measles Virus: The Influence of Filter Properties and the Cell Culture Medium." Membranes 9, no. 12 (2019): 160. http://dx.doi.org/10.3390/membranes9120160.

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The therapeutic use of oncolytic measles virus (MV) for cancer treatment requires >108 infectious MV particles per dose in a highly pure form. The concentration/purification of viruses is typically achieved by tangential flow filtration (TFF) but the efficiency of this process for the preparation of MV has not been tested in detail. We therefore investigated the influence of membrane material, feed composition, and pore size or molecular weight cut-off (MWCO) on the recovery of MV by TFF in concentration mode. We achieved the recovery of infectious MV particles using membranes with a MWCO ≤

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HALDENWANG, P. "Laminar flow in a two-dimensional plane channel with local pressure-dependent crossflow." Journal of Fluid Mechanics 593 (November 23, 2007): 463–73. http://dx.doi.org/10.1017/s0022112007008622.

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Long ducts (or pipes) composed of transpiring (e.g. porous) walls are at the root of numerous industrial devices for species separation, as tangential filtration or membrane desalination. Similar configurations can also be involved in fluid supply systems, as irrigation or biological fluids in capillaries. A transverse leakage (or permeate flux), the strength of which is assumed to depend linearly on local pressure (as in Starling's law for capillary), takes place through permeable walls. All other dependences, as osmotic pressure or partial fouling due to polarization of species concentration

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Mendes, Sónia, Tiago Q. Faria, André Nascimento, et al. "Accelerated Development of AAV Purification Process Using a High-Throughput and Automated Crossflow System." Separations 11, no. 3 (2024): 73. http://dx.doi.org/10.3390/separations11030073.

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Adeno-associated viruses (AAV) are currently predominant viral transfer tools for gene therapy, and efforts are being made to design faster and more efficient methods and technologies for their manufacturing. The early selection of high-performing filters is essential for developing an ultrafiltration and diafiltration (UF/DF) process, especially when feed material is scarce, and timelines are short. However, few methods and technologies exist to enable process optimization with multiple variations in a single run. In this study, we explored the potential of Ambr® Crossflow for high-throughput

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Diban, Nazely, Beatriz Gómez-Ruiz, María Lázaro-Díez, Jose Ramos-Vivas, Inmaculada Ortiz та Ane Urtiaga. "Factors Affecting Mass Transport Properties of Poly(ε-caprolactone) Membranes for Tissue Engineering Bioreactors". Membranes 8, № 3 (2018): 51. http://dx.doi.org/10.3390/membranes8030051.

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High porosity and mass transport properties of microfiltration polymeric membranes benefit nutrients supply to cells when used as scaffolds in interstitial perfusion bioreactors for tissue engineering. High nutrients transport is assumed when pore size and porosity of the membrane are in the micrometric range. The present work demonstrates that the study of membrane fouling by proteins present in the culture medium, though not done usually, should be included in the routine testing of new polymer membranes for this intended application. Two poly(ε-caprolactone) microfiltration membranes presen

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Pipich, Vitaliy, Thomas Starc, Johan Buitenhuis, et al. "Silica Fouling in Reverse Osmosis Systems–Operando Small-Angle Neutron Scattering Studies." Membranes 11, no. 6 (2021): 413. http://dx.doi.org/10.3390/membranes11060413.

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We present operando small-angle neutron scattering (SANS) experiments on silica fouling at two reverse osmose (RO) membranes under almost realistic conditions of practiced RO desalination technique. To its realization, two cells were designed for pressure fields and tangential feed cross-flows up to 50 bar and 36 L/h, one cell equipped with the membrane and the other one as an empty cell to measure the feed solution in parallel far from the membrane. We studied several aqueous silica dispersions combining the parameters of colloidal radius, volume fraction, and ionic strength. A relevant resul

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Tom, Wesley A., James Wells, Kristin E. Hales, and Samodha C. Fernando. "43 Characterization of the Fecal Virome in Beef Cattle with and Without Antibiotic Exposure." Journal of Animal Science 100, Supplement_2 (2022): 11–12. http://dx.doi.org/10.1093/jas/skac064.017.

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Abstract Mitigating the spread of antimicrobial resistance (AMR) has become a top priority globally over the last decade. Thus, understanding how bacterial communities acquire and transfer antibiotic resistance is of upmost importance in identifying intervention points for maintaining antibiotic efficacy. It is well documented that horizontal gene transfer (HGT) via bacteriophage transduction has the potential to shift metabolic flux in bacterial communities, yet phage mediated HGT in feedlot cattle with regard to AMR remains poorly characterized. Here we characterize the viral community of 72

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Trouvé, E., J. L. Maubois, M. Piot, et al. "Rétention de différentes espèces microbiennes lors de l'épuration du lait par microfiltration en flux tangentiel." Le Lait 71, no. 1 (1991): 1–13. http://dx.doi.org/10.1051/lait:199111.

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Wang, Qian, Xiaobin Tang, Heng Liang, et al. "Effects of Filtration Mode on the Performance of Gravity-Driven Membrane (GDM) Filtration: Cross-Flow Filtration and Dead-End Filtration." Water 14, no. 2 (2022): 190. http://dx.doi.org/10.3390/w14020190.

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Gravity-driven membrane (GDM) filtration technology has been extensively in the employed drinking water treatment, however, the effect filtration mode (i.e., dead-end mode vs. cross-flow mode) on its long-term performance has not been systematically investigated. In this study, pilot-scale GDM systems were operated using two submerged filtration mode (SGDM) and cross-flow mode (CGDM) at the gravity-driven pressures 120 mbar and 200 mbar, respectively. The results showed that flux stabilization was observed both in the SGDM and CGDM during long-term filtration, and importantly the stabilized fl

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Kim, J. P., J. J. Kim, M. S. Chun, B. R. Min, and K. Y. Chung. "Flux enhancement by glass balls inserted membrane module." Water Supply 1, no. 5-6 (2001): 285–92. http://dx.doi.org/10.2166/ws.2001.0125.

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The glass ball inserted membrane module presented in this study is designed to enhance filtration in a flat sheet membrane. Three different modes of filtration experiments were conducted and compared to demonstrate flux enhancement due to the presence of glass balls: a normal dead-end filtration, a vortex flow filtration, and an enhanced vortex flow filtration using glass balls. In the case of enhanced vortex flow filtration the permeate flux was found to be three times as large as that of the dead-end filtration, and two times larger compared with the vortex flow filtration. In addition, the

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Baker, R. J., A. G. Fane, C. J. D. Fell, and B. H. Yoo. "Factors affecting flux in crossflow filtration." Desalination 53, no. 1-3 (1985): 81–93. http://dx.doi.org/10.1016/0011-9164(85)85053-0.

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Hwang, E. J., D. D. Sun, and J. H. Tay. "Operational factors of submerged inorganic membrane bioreactor for organic wastewater treatment: sludge concentration and aeration rate." Water Science and Technology 47, no. 1 (2003): 121–26. http://dx.doi.org/10.2166/wst.2003.0032.

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Various sludge concentrations and aeration rates were evaluated to find the optimal operation condition of a submerged ceramic membrane filtration system. 5.6 g/L of sludge was diluted with water to concentrations of 2.8 g/L and 1.4 g/L, and the three sludge concentrations were compared in terms of filtration characteristics such as pressure and filtrate flux. Flux was at the highest value of about 30 L/m2.hr at 50 kPa when sludge concentration was 1.4 g/L. In contrast, when sludge concentrations increased to 2.8 g/L and 5.6 g/L, the flux at 50 kPa decreased significantly to 18 L/m2.hr and 10

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Xu, Yilu, James Russell, Gahtan S. M. Algahtani, and Darren L. Oatley-Radcliffe. "Valorising Nutrient-Rich Digestate as a Waste-Based Media for Microalgal Cultivation: Bench-Scale Filtration Characterisation and Scale-Up for a Commercial Recovery Process." Energies 15, no. 16 (2022): 5976. http://dx.doi.org/10.3390/en15165976.

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Cultivating microalgae requires a nitrogen and phosphorous feed source. Anaerobic digestion waste (digestate) provides a cheap sustainable feedstock for these materials. Previous studies have successfully demonstrated the feasibility of nutrient recovery and subsequent algae growth. There is now a need to fully characterise digestate filtration to improve our understanding of this process prior to its commercialisation. In this work, digestate filtration is characterised at bench scale using frontal (dead-end) filtration and a 100 kDa MWCO ultrafiltration membrane. Our experiments demonstrated

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Chuanwen, Sun, Wang Haiqiao, Yu Qi, Chen Shiqiang, Li Xun, and Wu Hanyang. "Experimental study of the flux Law of flat ceramic membranes under different pressures." Water Practice and Technology 15, no. 2 (2020): 416–25. http://dx.doi.org/10.2166/wpt.2020.028.

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Abstract The flux performance of ceramic membranes is the basis for their efficient use. To study ceramic membrane flux variation, different filtration operating conditions were tested and the functional relationship between the membrane's clean water flux and the operating pressure within a given range obtained. The membrane's critical pressure and flux were determined by using pressure increments, and the flux variation law under different pressures determined experimentally. Analysis of the flux law and the membrane parameters enabled establishment of the flux model of filtration process an

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Laabs, C., G. Amy, and M. Jekel. "Organic colloids and their influence on low-pressure membrane filtration." Water Science and Technology 50, no. 12 (2004): 311–16. http://dx.doi.org/10.2166/wst.2004.0728.

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Wastewater treatment by low-pressure membrane filtration (MF and UF) is affected to a large extent by macromolecules and colloids. In order to investigate the influence of organic colloids on the membrane filtration process, colloids were isolated from a wastewater treatment plant effluent using a rotaryevaporation pre-concentration step followed by dialysis. Stirred cell tests were carried out using redissolved colloids, with and without additional glass fiber filtration. After constant pressure membrane filtration of 190 L/m2, the initial flux had declined by 50% for colloids &gt; 6-8 kD

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Hashino, M., Y. Mori, Y. Fujii, et al. "Advanced water treatment system using ozone and ozone resistant microfiltration module." Water Supply 1, no. 5-6 (2001): 169–75. http://dx.doi.org/10.2166/ws.2001.0111.

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In order to achieve an efficient and economical advanced drinking water system, the relationship between operating conditions, membrane filtration flux and water qualities was examined by using a pilot plant consisting of ozonation facility, ozone resistant microfiltration (MF) module and granular activated carbon (GAC) tower. It was found that keeping residual ozone of more than 0.3 mg/L on the membrane surface is necessary in order to obtain a high membrane filtration flux. Withy ozone dosage of 3 mg/L by ejector and filtration by dead-end mode, this new system provided a high membrane filtr

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Azam, Reem S., Dema A. Almasri, Radwan Alfahel, et al. "MXene (Ti3C2Tx)/Cellulose Acetate Mixed-Matrix Membrane Enhances Fouling Resistance and Rejection in the Crossflow Filtration Process." Membranes 12, no. 4 (2022): 406. http://dx.doi.org/10.3390/membranes12040406.

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Obstacles in the membrane-based separation field are mainly related to membrane fouling. This study involved the synthesis and utilization of covalently crosslinked MXene/cellulose acetate mixed matrix membranes with MXene at different concentrations (CCAM-0% to CCAM-12%) for water purification applications. The membranes’ water flux, dye, and protein rejection performances were compared using dead-end (DE) and crossflow (CF) filtration. The fabricated membranes, especially CCAM-10%, exhibited high hydrophilicity, good surface roughness, significantly high water flux, high water uptake, and hi

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Ayu Mauliasyam, Tsaniyah, Slamet Budijanto, and Azis Boing Sitanggang. "Maillard reaction products between whey powder and water-soluble tempeh protein extract: membrane-based fractionation." Annals of the University Dunarea de Jos of Galati. Fascicle VI - Food Technology 47, no. 1 (2023): 64–78. http://dx.doi.org/10.35219/foodtechnology.2023.1.04.

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Whey powder, an industrial by-product, has the potential to be transformed into functional ingredients using the Maillard reaction. In this study, this chemical reaction occurred between whey powder and tempeh protein extract, resulting in increased antioxidant activity. This study aimed to isolate the Maillard reaction products (MRP) with the best antioxidant capacity using an ultrafiltration (UF) membrane by considering the fouling phenomenon that occurred on the membrane surface and critical flux for the filtration. MRP exhibited an antioxidant capacity of 0.09 mg ascorbic acid equivalent a

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Chen, Yan, Zi Wen Xiao, and Guo Zhen Zhang. "The Effect of Coagulation on Preventing UF Membrane from Fouling." Advanced Materials Research 113-116 (June 2010): 1353–57. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.1353.

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In this experiment, the effects on improve of flux and prevention of membrane from fouling was studied. The results demonstrated that after backwashing, the flux was completely recovered by addition of 4mg/L and 10mg/L（as Al）, while the flux was only 40% of initial flux without coagulation pretreatment. It was also found that whether or not prevention of fouling by coagulation was depended on the characteristics of cake layer formed on membrane surface during membrane filtration. In the presence of filtration of coagulation floc suspension, coagulation could form cake layer on membrane surface

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Jo, Kyungkeun. "The Change of Forward Osmosis Filtration Performance by Trace Organic Compounds in Heavy Metal Removal by Forward Osmosis Filtration." Journal of Korean Society of Environmental Engineers 43, no. 3 (2021): 187–95. http://dx.doi.org/10.4491/ksee.2021.43.3.187.

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Objectives : The purpose of this study was to examine how the presence of trace organic compounds (TROCs) affects water flux and heavy metal rejection in forward osmosis (FO) filtration when feed solution (FS) contains TROCs and heavy metals.Methods : Four FS (① only heavy metals, ② heavy metals and Trimethoprim, ③ heavy metals and Ibuprofen, ④ heavy metals and Triclosan) were used, and the FO filtration experiments were conducted to perform comparative analysis on the water flux and the rejection rate depending on the FS type.Results and Discussion : The water flux was higher when FS containe

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Chahine, G. L., K. M. Kalumuck, Patrick D. Aley, and G. S. Frederick. "High Flux Rate Particle Filtration From Liquids." Journal of Fluids Engineering 121, no. 1 (1999): 163. http://dx.doi.org/10.1115/1.2821997.

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Viñas, Adolfo F., and Alexander J. Klimas. "Flux-balance Vlasov simulation with filamentation filtration." Journal of Computational Physics 375 (December 2018): 983–1004. http://dx.doi.org/10.1016/j.jcp.2018.09.014.

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Grenier, Alexia, Martine Meireles, Pierre Aimar, and Philippe Carvin. "Analysing flux decline in dead-end filtration." Chemical Engineering Research and Design 86, no. 11 (2008): 1281–93. http://dx.doi.org/10.1016/j.cherd.2008.06.005.

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Chu, Huaqiang, Bingzhi Dong, Yalei Zhang, and Xuefei Zhou. "Gravity filtration performances of the bio-diatomite dynamic membrane reactor for slightly polluted surface water purification." Water Science and Technology 66, no. 5 (2012): 1139–46. http://dx.doi.org/10.2166/wst.2012.284.

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A bio-diatomite dynamic membrane (BDDM) reactor for surface water treatment under a water head of 30, 40, 50, 60 and 70 cm, respectively, was investigated, which was very effective for pollutants removal. The water head exerted strong influences on filtration flux of BDDM during the precoating process, as well as on the formation of BDDM and turbidity variations. A high filtration flux (approximately 200−300 L/m2 h) could be achieved in the long filtration times of BDDM with a stable effluent turbidity of approximately 0.11−0.25 NTU. The BDDM could remove particles larger than 25 μm completely

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Kennedy, M., S. Siriphannon, S. van Hoof, and J. Schippers. "Improving the performance of dead-end ultrafiltration systems: comparing air and water flushing." Water Supply 1, no. 5-6 (2001): 97–106. http://dx.doi.org/10.2166/ws.2001.0104.

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A cleaning protocol that effectively removes fouling from hollow fiber UF systems without excessive use of chemicals, product water or (long) down time is needed. Cross flushing with UF feed water has been reported to increase the net flux of hollow fiber systems by reducing the frequency of backwashing, the consumption of permeate and the system down time. In this study, the flux restoration achieved in a vertical and horizontal UF system employing an intermittent water and water/air cross flush were compared. The flux restoration in the vertical UF system was not improved by the addition of

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Kiat, W. Y., K. Yamamoto, and S. Ohgaki. "Optimal Fiber Spacing in Externally Pressurized Hollow Fiber Module for Solid Liquid Separation." Water Science and Technology 26, no. 5-6 (1992): 1245–54. http://dx.doi.org/10.2166/wst.1992.0567.

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Flux decline and clogging mechanism in hollow fiber bundle by activated sludge and kaolin clay suspensions were investigated experimentally. Filtration characteristics of hollow fiber bundles consisting of 10 fiber threads but different in packing density were observed. The main reason for severe flux decline was due to the accumulation of particles at the space in between fibers. The results showed that there was no particle accumulation when fiber packing density β was lower than a critical value βa. Maximum filtration flux and maximum membrane productivity Q/Vr,which is defined as the filtr

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Jiang, T., M. D. Kennedy, B. F. Guinzbourg, P. A. Vanrolleghem, and J. C. Schippers. "Optimising the operation of a MBR pilot plant by quantitative analysis of the membrane fouling mechanism." Water Science and Technology 51, no. 6-7 (2005): 19–25. http://dx.doi.org/10.2166/wst.2005.0617.

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In order to optimize some operational conditions of MBR systems, a MBR pilot plant equipped with a submerged hollow fibre membrane module was employed in this study. The pilot MBR was fed with real municipal wastewater and the filtration flux, backwashing interval, aeration frequency and temperature were varied. A filtration flux below 25 l/m2h is generally recommended, at below this flux, the MBR operated at sub-critical flux conditions, the filter cake was minimized and membrane fouling was mainly attributed to the membrane pore blocking. Moreover, the membrane fouling, at below 25 l/m2h, wa

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Manzoor, Saher, Faheem Qasim, Muhammad Waseem Ashraf, et al. "Simulation and Analysis of Anodized Aluminum Oxide Membrane Degradation." Sensors 23, no. 24 (2023): 9792. http://dx.doi.org/10.3390/s23249792.

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Microelectromechanical systems (MEMS)-based filter with microchannels enables the removal of various microorganisms, including viruses and bacteria, from fluids. Membranes with porous channels can be used as filtration interfaces in MEMS hemofilters or mini-dialyzers. The main problems associated with the filtration process are optimization of membrane geometry and fouling. A nanoporous aluminum oxide membrane was fabricated using an optimized two-step anodization process. Computational strength modeling and analysis of the membrane with specified parameters were performed using the ANSYS stru

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Fekete, Laura, Ákos Ferenc Fazekas, Cecilia Hodúr, et al. "Outstanding Separation Performance of Oil-in-Water Emulsions with TiO2/CNT Nanocomposite-Modified PVDF Membranes." Membranes 13, no. 2 (2023): 209. http://dx.doi.org/10.3390/membranes13020209.

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Membrane filtration is an effective technique for separating micro- and nano-sized oil droplets from harmful oil-contaminated waters produced by numerous industrial activities. However, significant flux reduction discourages the extensive application of this technology; therefore, developing antifouling membranes is necessary. For this purpose, various titanium dioxide/carbon nanotube (TiO2/CNT) nanocomposites (containing 1, 2, and 5 wt.% multi-walled CNTs) were used for the modification of polyvinylidene fluoride (PVDF) ultrafilter (250 kDa) membrane surfaces. The effects of surface modificat

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Park, Min-Ju, and Gyu-Tae Seo. "A Study on Membrane Filtration Characteristics of Methanogenic Mixed Liquor in Two Phase Anaerobic Digestion of Food Waste." Journal of Korean Society of Environmental Engineers 42, no. 3 (2020): 151–63. http://dx.doi.org/10.4491/ksee.2020.42.3.151.

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Objectives:An experimental study was conducted to investigate the membrane filtration characteristics of mixed liquor in methanogenic reactor to extend solid retention time (SRT) in food waste anaerobic digestion system.Methods:On the basis of the particle size distribution (0.5~700 µm) of the methanogenic mixed liquor, three grade membranes (MF, UF, NF) were tested in a stirred cell filtration and a plate type module. Furthermore foulants of membrane, especially UF, was investigated by SEM-EDS, FTIR, SEC.Results and Discussion:As a result UF membrane was selected for stable filtration of the

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Nguyen, S. T., F. A. Roddick, and J. L. Harris. "Membrane foulants and fouling mechanisms in microfiltration and ultrafiltration of an activated sludge effluent." Water Science and Technology 62, no. 9 (2010): 1975–83. http://dx.doi.org/10.2166/wst.2010.505.

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Membrane fouling in microfiltration (MF) and ultrafiltration (UF) of an activated sludge (AS) effluent was investigated. It was found that the major membrane foulants were polysaccharides, proteins, polysaccharide-like and protein-like materials and humic substances. MF fouling by the raw effluent was governed by pore adsorption of particles smaller than the pores during the first 30 minutes of filtration and then followed the cake filtration model. UF fouling could be described by the cake filtration model throughout the course of filtration. Coagulation with alum and (poly)aluminium chlorohy

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Choiriyah, Dyah, Esfi Riandini, and Arinta Wulandari. "PREPARATION MICRO-FILTRATION CERAMIC MEMBRANE FROM NATURAL ZEOLITE FOR PROCION RED MX8B AND METHYLENE BLUE FILTRATION." ALCHEMY Jurnal Penelitian Kimia 11, no. 1 (2016): 8. http://dx.doi.org/10.20961/alchemy.11.1.100.8-14.

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<p>The study of ceramic membrane fabrication from natural zeolite and its utilization for filtration of <em>procion red MX8B</em> and methylene blue has been investigated. The purposes of this study are to determine the effect of pressure on membrane permeability and selectivity and utilize natural zeolite as ceramic membranes <em>procion red MX8B</em> and methylene blue filtration. The membrane was prepared by metide press pellets and then calcined at 850 <sup>o</sup>C. The membranes were characterized by mechanical test, flux and rejection of dye. Th

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Choiriyah, Dyah, Esfi Riandini, and Arinta Wulandari. "PREPARATION MICRO-FILTRATION CERAMIC MEMBRANE FROM NATURAL ZEOLITE FOR PROCION RED MX8B AND METHYLENE BLUE FILTRATION." ALCHEMY Jurnal Penelitian Kimia 11, no. 1 (2015): 8. http://dx.doi.org/10.20961/alchemy.v11i1.100.

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<p>The study of ceramic membrane fabrication from natural zeolite and its utilization for filtration of <em>procion red MX8B</em> and methylene blue has been investigated. The purposes of this study are to determine the effect of pressure on membrane permeability and selectivity and utilize natural zeolite as ceramic membranes <em>procion red MX8B</em> and methylene blue filtration. The membrane was prepared by metide press pellets and then calcined at 850 <sup>o</sup>C. The membranes were characterized by mechanical test, flux and rejection of dye. Th

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Oh, Hyun-je, June-Seok Choi, Byong-Bo Choi, Sangho Lee, and Tae-Mun Hwang. "Effect of axial variation of flux on filtration characteristics of hollow fiber membrane for drinking water treatment." Water Supply 7, no. 4 (2007): 95–101. http://dx.doi.org/10.2166/ws.2007.137.

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Understanding the fouling phenomena in submerged membrane systems is challenging because the efficiency of hollow fiber membrane highly depends on the dimensions of the fibers as well as filtration conditions. Thus, modeling filtration behavior of hollow fibers is important for improving the performance of hollow fiber system. In this work, a theoretical model based on critical flux concept was developed to simulate filtration resistance and axial pressure drop along the fiber in drinking water treatment. The application of a model for experimental data indicated that the model matches the exp

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Zhao, Yujie, Xiaowei Liu, Meng Qi, Tian Bai, Kongyin Zhao, and Xinxin Zhang. "Removal of Dyes and Cd2+ in Water by Kaolin/Calcium Alginate Filtration Membrane." Coatings 9, no. 4 (2019): 218. http://dx.doi.org/10.3390/coatings9040218.

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Kaolin/calcium alginate (kaolin/CaAlg) free-standing membranes were prepared by adding different amounts of Kaolin into the sodium alginate (NaAlg) casting solution and crosslinked by Ca2+ using urea as porogen agent. The morphology of the kaolin/CaAlg filtration membrane was characterized by scanning electron microscope (SEM). Then the kaolin/CaAlg membrane was used for the removal of dyes and Cd2+. The kaolin significantly improved the mechanical behavior and flux of the kaolin/CaAlg membrane. The flux reached 17.53 L/m2·h at 0.1 MPa and when the content of Kaolin in NaAlg was 70 wt.%. The f

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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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