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Journal articles on the topic 'Microfiltration membranes'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Chang, S., T. D. Waite, A. I. Schäfer, and A. G. Fane. "Binding of estrone to hollow fibre membranes in microfiltration of solutions containing trace estrone." Water Supply 2, no. 5-6 (2002): 233–39. http://dx.doi.org/10.2166/ws.2002.0174.

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Increased concern is being paid to the health and environmental risk caused by trace natural and synthetic hormones discharged from sewage treatment plants. This study, which is part of a larger project on the investigation of hybrid membrane processes for trace hormones removal in water recycling, focuses on binding of hormones to microfiltration membranes in filtration of solutions containing trace hormones. The adsorption capacity of the membrane, kinetics of adsorption and desorption of to/from microfiltration hollow fibre membranes, and the factors affecting adsorption to the membranes ha

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Chechenikhina, Olga, and Vladimir Lazarev. "Microbiological, physicochemical and biotechnological properties of dairy raw materials under intensive technologies." E3S Web of Conferences 537 (2024): 10008. http://dx.doi.org/10.1051/e3sconf/202453710008.

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The purpose of the article is to analyze the microbiological, physico-chemical and biotechnological properties of raw milk obtained under intensive technologies using the Lely Astronaut A4 robotic milking system in comparison with milking operations using milking pipeline machines DA-2M Maiga, subjected to baromembrane sterilization through ceramic microfiltration membranes. It has been established that the use of intensive robotic technologies – the LelyAstronautA4 robotic milking system – can increase milk yield by an average of 12% compared to milking in a milk line using ceramic microfiltr

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Azari, Sara, Linda Zou, Emile Cornelissen, and Yasushito Mukai. "Facile fouling resistant surface modification of microfiltration cellulose acetate membranes by using amino acid l-DOPA." Water Science and Technology 68, no. 4 (2013): 901–8. http://dx.doi.org/10.2166/wst.2013.292.

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A major obstacle in the widespread application of microfiltration membranes in the wet separation processes such as wastewater treatment is the decline of permeates flux as a result of fouling. This study reports on the surface modification of cellulose acetate (CA) microfiltration membrane with amino acid l-3,4-dihydroxy-phenylalanine (l-DOPA) to improve fouling resistance of the membrane. The membrane surface was characterised using Fourier transform infrared spectroscopy (FTIR), water contact angle and zeta potential measurement. Porosity measurement showed a slight decrease in membrane por

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Omelchenko, Оleksandr, Gregoriy Deynichenko, Vasyl Guzenko, et al. "Determining the influence of membrane treatment process on the quality indicators of beer." Eastern-European Journal of Enterprise Technologies 4, no. 11(112) (2021): 66–72. http://dx.doi.org/10.15587/1729-4061.2021.238216.

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The issue related to the possibility of applying the filtration process of young beer with the use of experimental microfiltration polymer semi-permeable membrane elements was considered. It was shown that under modern conditions, it is expedient to use membrane processes of young beer filtration in the brewing industry. The process of membrane treatment of beer can be carried out at the stage of pasteurization of young beer in a cold way. Such actions can be directed to preserve the organoleptic parameters of the final product ‒ filtered beer. An experimental setup for the study of the main t

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Оleksandr, Omelchenko, Deynichenko Gregoriy, Guzenko Vasyl, et al. "Determining the influence of membrane treatment process on the quality indicators of beer." Eastern-European Journal of Enterprise Technologies 4, no. 11 (112) (2021): 66–72. https://doi.org/10.15587/1729-4061.2021.238216.

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The issue related to the possibility of applying the filtration process of young beer with the use of experimental microfiltration polymer semi-permeable membrane elements was considered. It was shown that under modern conditions, it is expedient to use membrane processes of young beer filtration in the brewing industry. The process of membrane treatment of beer can be carried out at the stage of pasteurization of young beer in a cold way. Such actions can be directed to preserve the organoleptic parameters of the final product ‒ filtered beer. An experimental setup for the study of the main t

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Yousefi, Mehran, Mohsen Abbasi, Mohammad Akrami, and Mika Sillanpää. "Pre-Treatment and Turbidity Reduction of Sea Waters Using New Composite Ceramic Microfiltration Membranes with Iron Oxide Additive." Water 14, no. 21 (2022): 3475. http://dx.doi.org/10.3390/w14213475.

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In this research, an experimental study was carried out on the pre-treatment and turbidity removal of Persian Gulf water using cross flow microfiltration by new composite ceramic membranes. Three types of tubular microfiltration composite ceramic membranes that consisted of Mullite, Mullite/SiC, and Mullite/SiC/Fe2O3 with different compositions were fabricated at relatively low temperature (1250 °C) with extrusion and sintering for this purpose. Furthermore, changes in porosity, pore size, and mechanical strength were compared in Mullite membranes and composite membranes to find the most suita

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Xu, Shijie, Wenzhong Ma, Haicun Yang, Zheng Cao, Fanghong Gong, and Chunlin Liu. "Cross-Linking Combined with Surfactant Bilayer Assembly Enhances the Hydrophilic and Antifouling Properties of PTFE Microfiltration Membranes." Separations 9, no. 1 (2021): 2. http://dx.doi.org/10.3390/separations9010002.

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The inherent strong hydrophobicity of Polytetrafluoroetylene (PTFE) microfiltration membranes results in low separation efficiency and easy contamination. In order to enhance its hydrophilic and antifouling properties, we first modified the PTFE microfiltration membrane by using Polyethylene glycol laurate (PEGML) for first layer deposition and then used Polyvinyl alcohol (PVA)/citric acid (CA) cross-linked coatings for second layer deposition. The Scanning Electron Microscope (SEM) results showed that the fibers and nodes of the modified PTFE microfiltration membrane were coated with PVA/CA h

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Ivanets, A. I. "Preparation of microfiltration ceramic membranes." Proceedings of the National Academy of Sciences of Belarus, Chemical Series 57, no. 1 (2021): 25–32. http://dx.doi.org/10.29235/1561-8331-2021-57-1-25-32.

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The main factors affecting the physicochemical properties of microfiltration ceramic membranes based on natural quartz sand were studied. It was found that samples of large-porous ceramics with a content of 11.0 wt. % of the aluminosilicate binder and 10.0 wt. % of the burning additive are characterized by average pore size of 22±3.02 µm, water capacity of 54±5.0 m3/(h×m2×bar), and tensile strength of 9.0±0.6 bar. The optimal conditions for membrane layers coating were determined, which allowed obtaining microfiltration ceramic membranes with average pore size of 2.3±0.2 µm, water capacity of

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9

González, María del Pilar, Rubén Darío Rivera-Rangel, Pilar Herrasti, and Mario Avila-Rodriguez. "Synthesis of Silver Submicroparticles and Nanoparticles over Microfiltration Membranes Impregnated with Surfactants." Advanced Materials Research 976 (June 2014): 227–31. http://dx.doi.org/10.4028/www.scientific.net/amr.976.227.

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This paper shows the results obtained from the synthesis of silver particles (nanoparticles and submicroparticles) on microfiltration membranes, evaluating the influence of surfactants impregnated in the membranes. Sub-micro particles and nanoparticles were obtained by the use of ascorbic acid as a reductant in a microfiltration system. Different shapes and sizes of the deposited silver particles on the membrane were obtained depending on the nature and concentration of the surfactant. The particles deposited over the membranes were characterized by scanning electron microscopy and energy- dis

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Wentz, J. E., S. G. Kapoor, R. E. DeVor, and N. Rajagopalan. "Development of a Novel Metalworking Fluid Engineered for Use With Microfiltration Recycling." Journal of Tribology 129, no. 1 (2006): 135–42. http://dx.doi.org/10.1115/1.2401207.

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Membrane microfiltration is a promising technology that has been shown to extend metalworking fluid (MWF) life by eliminating contaminants while allowing the fluid to stay in use. However, the efficacy of this technology is compromised by the clogging of the filter pores in a process known as membrane fouling. In this paper the fouling issue is addressed by the development of a semi-synthetic MWF specifically designed to not foul microfiltration membranes. The composition of the designed MWF is discussed and compared with a commercial MWF. Cross-flow microfiltration fouling tests were carried

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Santosa, Imam. "Decreased Concentration (BOD, COD, TSS, Fatty Oil, Ammonia and Coliform) Hospital Wastewater Using Microfiltration Membranes." Jurnal Kesehatan 14, no. 1 (2023): 117. http://dx.doi.org/10.26630/jk.v14i1.3491.

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Microfiltration membranes are a technological alternative to the biological method; apart from being easier to operate, they can also be made portable, especially in emergencies such as natural disasters. The problem with the operation of this microfiltration membrane is that saturation occurs quickly on the surface of the microfiltration membrane. It can reduce the efficiency of treatment and the quality of wastewater. This study aimed to determine the initial rate of hospital wastewater and the efficiency of reducing the parameters of hospital wastewater using microfiltration membrane filtra

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Hu, Xue Bing, Jian Er Zhou, Yan Xiang Wang та ін. "Effect of SnO₂ Modification on Permeate Flux of Α-Al₂O₃ Microfiltration Membrane for Treating Fe(OH)₂ Suspensions". Advanced Materials Research 189-193 (лютий 2011): 489–93. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.489.

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To improve the permeate flux of ceramic membrane, commercial α-Al2O3 microfiltration membrane of 0.2 μm pore diameter was modified with SnO2 nano grains by in situ synthesis method. The permeate fluxes of the membrane for pure water and treating Fe(OH)2 suspensions were studied mainly in the paper. The results showed that the pure water stable permeate fluxes of unmodified and SnO2 modified microfiltration membranes were 0.61 m3h-1m-2 and 1.87 m3h-1m-2, respectively. When treating 1L 0.01 mol∙L-1 Fe(OH)2 suspensions, the permeate fluxes of SnO2 modified membrane was higher than that of unmodif

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Faiq Al-Alawy, Ahmed, and Samah Mohsin Al – Musawi. "Microfiltration Membranes for Separating Oil / Water Emulsion." Iraqi Journal of Chemical and Petroleum Engineering 14, no. 4 (2013): 53–70. http://dx.doi.org/10.31699/ijcpe.2013.4.7.

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This research was aimed to study the efficiency of microfiltration membranes for the treatment of oily wastewater and the factors affecting the performance of the microfiltration membranes experimental work were includes operating the microfiltration process using polypropylene membrane (1 micron) and ceramic membrane (0.5 micron) constructed as candle; two methods of operation were examined: dead end and cross flow. The oil emulsion was prepared using two types of oils: vegetable oil and motor oil (classic oil 20W-50). The operating parameters studied are: feed oil concentration 50 – 800 mg/l

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Santosa, Imam, Daria Br Ginting, Bambang Murwanto, and Mareli Telaumbanua. "Performance of Microfiltration Membranes to Turn Processed Water from Hospital Wastewater Treatment Plants (WWTP) into Clean Water." Jurnal Kesehatan 15, no. 1 (2024): 97–105. http://dx.doi.org/10.26630/jk.v15i1.4117.

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Problems arise when there are tax fees on groundwater use by hospitals. This will, of course, burden the hospital's operational costs. The solution to reducing groundwater use is the use of microfiltration membranes. Microfiltration membranes can be used to recycle wastewater into clean water so that it can be collected and used for cleaning, washing, and watering gardens. They can reduce groundwater taxes and hospital groundwater use. The research objectives are to know the efficiency of reducing wastewater recycling equipment from the wastewater treatment plant (WWTP) outlet using a microfil

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15

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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Alnoor, Omer, Tahar Laoui, Ahmed Ibrahim, et al. "Graphene Oxide-Based Membranes for Water Purification Applications: Effect of Plasma Treatment on the Adhesion and Stability of the Synthesized Membranes." Membranes 10, no. 10 (2020): 292. http://dx.doi.org/10.3390/membranes10100292.

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The adhesion enhancement of graphene oxide (GO) and reduced graphene oxide (rGO) layer in the underlying polyethersulfone (PES) microfiltration membrane is a crucial step towards developing a high-performance membrane for water purification applications. In the present study, we modified the surface of a PES microfiltration membrane with plasma treatment (PT) carried out at different times (2, 10, and 20 min). We studied the effect of PT on the adhesion, stability, and performance of the synthesized GO/rGO-PES membranes. The membranes’ surface morphology and chemistry were characterized using

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17

Ghouil, Boudjemaa, Zineb Khebli, Ferhat Bouzerara, et al. "Preparation and characterization of low-cost ceramic microfiltration membranes for water treatment." Processing and Application of Ceramics 18, no. 4 (2024): 405–13. https://doi.org/10.2298/pac2404405g.

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This work presents the preparation of microfiltration (MF) membranes deposited on highly porous supports tailored for microfiltration applications. The supports were prepared from local Algerian clays and calcium carbonate, selected for their abundant availability. Subsequently, these supports underwent coating with microfiltration membrane using the slip casting method employing the same clay powder. The resulting membrane, sintered at 1100?C, exhibited desirable attributes including a thickness of approximately 27 ?m and an average pore size (APS) value of about 0.42 ?m, coupled with notable

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18

Santosa, Imam, Daria Br Ginting, and Enro Sujito. "Performance of pretreatment materials on hospital wastewater before microfiltration membrane filtration process." Applied Research in Science and Technology 2, no. 1 (2022): 36–42. http://dx.doi.org/10.33292/areste.v2i1.22.

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An alternative method of treating hospital wastewater can use a microfiltration membrane, where the results showed that the disposal of oily wastewater reached 82.5%, BOD 90%, COD 85%, and total Coli up to 70%. In addition, it can remove particles from wastewater from 0.04 to 100 microns in size. The problem with using microfiltration membranes is the rapid occurrence of fouling/saturation on the surface of the microfiltration membrane, causing the wastewater treatment operation time to be short. The length of this treatment causes the problem of less amount of wastewater being treated and ano

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Kacprzyńska-Gołacka, Joanna, Monika Łożyńska, Wioletta Barszcz, Sylwia Sowa, and Piotr Wieciński. "Microfiltration Membranes Modified with Zinc by Plasma Treatment." Membranes 13, no. 4 (2023): 387. http://dx.doi.org/10.3390/membranes13040387.

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Polymer membranes play an important role in various filtration processes. The modification of a polyamide membrane surface by one-component Zn and ZnO coatings and two-component Zn/ZnO coatings is presented in this work. The technological parameters of the Magnetron Sputtering-Physical Vapor Deposition method (MS-PVD) for the coatings deposition process show an impact on the influence on the membrane’s surface structure, chemical composition, and functional properties. The characterization of surface structure and morphology were analyzed by scanning electron microscopy. In addition, surface r

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Bakalár, Tomáš, Milan Búgel, Henrieta Pavolová, and Gabriel Müller. "Influence of Inner Configuration of Membrane on Microfiltration of Suspensions." Advanced Materials Research 781-784 (September 2013): 2305–10. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.2305.

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The influence of membrane type on the permeate flux in microfiltration of two sorbents Bentonite a natural sorbent, montmorillonite based clay and Lewatit S1468 a synthetic sorbent, styrene-divinylbenzene based copolymer was studied. Two types of membranes, single-and multi-channel, both asymmetric inorganic ceramic membranes based on α-Al2O3, were used. The experimental data were obtained by continuous microfiltration equipment. According to the results use of multi-channel membrane has more advantages higher permeate flux, lower energy consumption, and lower flow rate than disadvantages long

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O. Serhiienko, Alla, Tetiana A. Dontsova, and Victoria I. Vorobyova. "SYNTHESIS OF BACTERICIDAL MICROFILTRATION CERAMIC MEMBRANES." MATTER: International Journal of Science and Technology 7, no. 3 (2022): 112–25. http://dx.doi.org/10.20319/mijst.2022.73.112125.

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Membrane technologies have become widely used in filtration and separation processes in chemical, oil, food, pharmaceutical, medical, environmental, textile industries, etc. Recently, there is a growing demand for the use of bactericidal membranes due to their effectiveness in neutralizing microorganisms. The aim of this work is to synthesize microfiltration ceramic membranes modified with silver nanoparticles to provide them with bactericidal properties. In this work, ceramic membranes are synthesized by dry pressing followed by sintering from natural raw materials of Ukrainian origin, namely

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Abu-Zurayk, Rund, Nour Alnairat, Aya Khalaf, Abed Alqader Ibrahim, and Ghada Halaweh. "Cellulose Acetate Membranes: Fouling Types and Antifouling Strategies—A Brief Review." Processes 11, no. 2 (2023): 489. http://dx.doi.org/10.3390/pr11020489.

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Cellulose acetate (CA) is a semisynthetic, biodegradable polymer. Due to its characteristics, CA has several applications, including water membranes, filament-forming matrices, biomedical nanocomposites, household tools, and photographic films. This review deals with topics related to the CA membranes, which are prepared using different techniques, such as the phase inversion technique. CA membranes are considered very important since they can be used as microfiltration membranes (MF), ultrafiltration membranes (UF), nanofiltration membranes (NF), reverse osmosis (RO) membranes, and forward os

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Ait Taleb, A., N. El Baraka, N. Saffaj, et al. "New Tubular Ceramic Membranes from Natural Moroccan Clay for Microfiltration Application." E3S Web of Conferences 37 (2018): 01011. http://dx.doi.org/10.1051/e3sconf/20183701011.

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This paper is devoted the preparation of low cost microfiltration membranes using Moroccan clay powder. The preparation of membrane was composed with two steps: First a macroporous tubular support with a pore diameter 10 μm and porosity 43%. Secondly a microfiltration layer was performed by the slip casting method. A deflocculated slip was obtained by mixing mineral powder of ZrO2, PVA (polyvinyl alcohol) and water, after drying at room temperature for 24 h, the microfiltration layer was heated to 800°C for consolidation. Scanning electron microscopy observation showed homogeneous layers witho

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Katagiri, Nobuyuki, Daisuke Shimokawa, Takayuki Suzuki, Masahito Kousai, and Eiji Iritani. "Separation Properties of Plasmid DNA Using a Two-Stage Particle Adsorption-Microfiltration Process." Membranes 13, no. 2 (2023): 168. http://dx.doi.org/10.3390/membranes13020168.

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Plasmid DNA is used as a vector for gene therapy and DNA vaccination; therefore, the establishment of a mass production method is required. Membrane filtration is widely employed as a separation method suitable for the mass production of plasmid DNA. Furthermore, the separation of plasmid DNA using microfiltration and ultrafiltration membranes is being investigated. Because plasmid DNA has a circular structure, it undergoes significant deformation during filtration and easily permeates the membrane, hindering the selection of separation membranes based on molecular weight. In this study, we ap

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Gopinath, Pooja, Murali Pujari, and Tirumala Rao Kotni. "Preparation and application of low-cost ceramic membranes for separation of oil-water emulsion." Journal of Physics: Conference Series 2070, no. 1 (2021): 012076. http://dx.doi.org/10.1088/1742-6596/2070/1/012076.

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Abstract This work presents the impact of fabricating pressure on the performance of ceramic membranes during the dead-end microfiltration of an oil-water emulsion. The membranes used in this study were fabricated at a pressure of 40 kN and 100 kN using the dry compaction method. The membrane characterization was done using XRD and FTIR analysis. The membrane performance was evaluated by carrying dead-end microfiltration experiments using synthetic oil-water emulsion as a feed at a trans-membrane pressure of 30 psi. The experimental results confirmed that the membrane fabricated at higher fabr

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Rodríguez-Alegre, Rubén, Sergi Durán-Videra, Laura Pérez Megías, et al. "Effect of Microfiltration Membrane Configuration in Microplastics Recovery from Wastewater Treatment Effluent." Membranes 15, no. 5 (2025): 137. https://doi.org/10.3390/membranes15050137.

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Water scarcity has driven the use of wastewater treatment plant (WWTP) effluents as reclaimed water, highlighting the need to overcome challenges such as the presence of emerging contaminants, particularly microplastics (MPs), which WWTPs are unable to effectively remove. Membrane-based processes, such as microfiltration, have demonstrated high efficiency in the removal of suspended solids, and their application for MP removal is currently under investigation. This study assesses the influence of microfiltration membrane spacer size (1 mil and 80 mil) and geometry—diamond and corrugated—on MP

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Laurell, Panu, Heikki Poutanen, Mehrdad Hesampour, Tanja Tuutijärvi, and Riku Vahala. "Feasibility and Environmental Impact of NOM Reduction by Microfiltration at a Finnish Surface Water Treatment Plant." Water 15, no. 10 (2023): 1822. http://dx.doi.org/10.3390/w15101822.

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Low-pressure membranes (including microfiltration and ultrafiltration) for natural organic matter removal in drinking water treatment have gained increasing interest in the Nordic countries. Microfiltration can produce stable water quality and requires less space than conventional treatment. Hollow fibre microfiltration coupled with chemical coagulation was tested at a Finnish surface water treatment plant to study its feasibility and environmental impact compared to clarification, rapid sand filtration and ozonation. Microfiltration improved both physical and chemical water quality, while nat

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Vukosavljevic, Predrag, Branka Bukvic, Miodrag Jankovic, Tanja Petrovic, and Snezana Stevanovic. "Change of juice color during raspberry processing in fruit juice and fruit juice concentrate." Journal of Agricultural Sciences, Belgrade 51, no. 1 (2006): 99–115. http://dx.doi.org/10.2298/jas0601099v.

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A change of anthocyanins under different conditions of enzymatic treatments, clarification and concentration was determined. A pectin preparation Klerzyme?120, manufactured by DSM, France, specific for "sour fruits" with pH below 3.2, was used for maceration and depectinization. Experiments were carried out by a laboratory hydraulic press. Raw raspberry juice was clarified either by membranes separation processes or by traditional treatments using gelatin and bentonite. For microfiltration and ultrafiltration processes, membrane cut-off should not be below 30,000 g/mol to prevent any color los

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Ma, Wenzhong, Yakai Lin, and Yuanhui Tang. "Novel Polymeric Membranes Preparation and Membrane Process." Separations 9, no. 9 (2022): 253. http://dx.doi.org/10.3390/separations9090253.

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Polymer-based membranes have advanced or novel functions in the various membrane separation processes for liquid and gaseous mixtures, such as gas separation, pervaporation (PV), reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF), microfiltration (MF), and in other critical applications of membranes such as water purification, solvent concentration, and recovery [...]

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Pinto, Luiza Helena Domingues, Fabiane Hamerki, Agnes de Paula Scheer, and Vitor da Silva. "Clarification of red araçá (Psidium cattleianum Sabine) juice by membrane process: Analysis of permeate flux and loss of bioactive compounds." International Food Research Journal 30, no. 1 (2023): 163–72. http://dx.doi.org/10.47836/ifrj.30.1.13.

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Red araçá (Psidium cattleianum Sabine) juice was processed using porous membranes to obtain a clarified product with a high amount of phenolic compounds prior to its use as a juice or other beverage. The variations in the permeate flux and concentrations of phenolics were determined in a cross-flow system using a polyetherimide microfiltration membrane (0.44 µm) and polyethersulfone ultrafiltration membrane (50 kDa). Both membranes reduced the initial turbidity (445 ± 2) to almost zero, and resulted in a clear and transparent permeate with a yellow colour. The microfiltration membrane showed b

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Abdi Bogoreh, Hassan, and Catherine Charcosset. "Removal of Diclofenac from Water using an Hybrid Process Combining Activated Carbon Adsorption and Ultrafiltration or Microfiltration." International Journal of Membrane Science and Technology 4, no. 2 (2017): 45–52. http://dx.doi.org/10.15379/ijmst.v4i2.821.

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Small amounts of pharmaceuticals are increasingly found in natural waters and wastewaters in treatment plants. Several processes are developed for their removal such as hybrid membrane processes. These techniques integrate membrane filtration (mainly ultrafiltration or microfiltration) to a physical technique (such as flocculation or sorption on activated carbon). In this study, we report results on a process with sorption on activated carbon and microfiltration or ultrafiltration using a ceramic membrane, with a specific attention to the influence of the membrane pore size. The membranes show

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Mikulášek, Petr. "Effect of Fluidized Bed on Permeate Flux in Ceramic Membrane Cross-Flow Microfiltration." Collection of Czechoslovak Chemical Communications 60, no. 12 (1995): 2074–84. http://dx.doi.org/10.1135/cccc19952074.

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The microfiltration of a model fluid on an α-alumina microfiltration tubular membrane in the presence of a fluidized bed has been examined. Following the description of the basic characteristic of alumina tubular membranes, model dispersion and spherical particles used, some comments on the experimental system and experimental results for different microfiltration systems are presented. From the analysis of experimental results it may be concluded that the use of turbulence-promoting agents resulted in a significant increase of permeate flux through the membrane. It was found out that the opti

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Alebrahim, Elnaz, and Christian Moreau. "A Comparative Study of the Self-Cleaning and Filtration Performance of Suspension Plasma-Sprayed TiO2 Ultrafiltration and Microfiltration Membranes." Membranes 13, no. 9 (2023): 750. http://dx.doi.org/10.3390/membranes13090750.

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This study investigated the performance of photocatalytic titanium dioxide microfiltration membranes with an average pore size of approximately 180 nm and ultrafiltration membranes with an average pore size of around 40 nm fabricated with the suspension plasma spray process. The membranes were evaluated for their filtration performance using SiO2 particles of different sizes and polyethylene oxide with molecular weights of 20 kDa to 1000 kDa, and the fouling parameters were characterized. The rejection rate was enhanced by increasing the thickness of the membranes. This effect was more pronoun

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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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Zhang, K., H. Choi, M. Wu, G. A. Sorial, D. Dionysiou, and D. B. Oerther. "An ecology-based analysis of irreversible biofouling in membrane bioreactors." Water Science and Technology 55, no. 8-9 (2007): 395–402. http://dx.doi.org/10.2166/wst.2007.283.

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To provide the first step towards a microbial ecology-based understanding of irreversible membrane biofouling, four laboratory-scale membrane bioreactors (MBRs) were operated to investigate the identity of bacterial populations highly correlated with irreversible membrane biofouling. The conventional MBR was divided into two separate experimental units. Unit one consisted of four suspended-growth, activated sludge, sequencing batch bioreactors treating a synthetic paper mill wastewater. Unit two consisted of a microfiltration membrane cell. Amplified ribosomal deoxyribonucleic acid restriction

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Markovic, Tijana, Predrag Vukosavljevic, Goran Vladisavljevic, and Branka Bukvic. "Investigations of hydrodynamic permeability ceramic membranes for microfiltration." Journal of Agricultural Sciences, Belgrade 51, no. 2 (2006): 151–64. http://dx.doi.org/10.2298/jas0602151m.

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This paper introduces the results of experimental investigations on the influence of operating parameters, such as feed flow rate, temperature, pressure difference in the microfiltration through the ceramic Kerasep membrane. The results confirmed earlier work on the same laboratory device for microfiltration. and they are the main condition for determination of kinetics juice clarification. Apart from investigations on the influence of operating parameters, the influence of membrane moisture on microfiltration was observed.

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Floris, R., G. Moser, K. Nijmeijer, and E. R. Cornelissen. "Effect of multicomponent fouling during microfiltration of natural surface waters containing nC60 fullerene nanoparticles." Environmental Science: Water Research & Technology 3, no. 4 (2017): 744–56. http://dx.doi.org/10.1039/c7ew00041c.

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To understand and mitigate the role of surface water composition and associated membrane fouling in the removal of nC<sub>60</sub> nanoparticles by low-pressure membranes, experiments were carried out with microfiltration membranes using natural feed waters, mimicking separation in real industrial water treatment plants.

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Katagiri, Nobuyuki, Takehiro Uchida, Hironori Takahashi, and Eiji Iritani. "An Evaluation of the Relationship between Membrane Properties and the Fouling Mechanism Based on a Blocking Filtration Model." Separations 11, no. 3 (2024): 70. http://dx.doi.org/10.3390/separations11030070.

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Microfiltration plays an increasingly important role in various fields. Consequently, elucidating the mechanism of membrane fouling has emerged as a pivotal issue that needs to be resolved. In this study, a blocking filtration model was employed to evaluate the effects of membrane properties on the fouling mechanism during the microfiltration of representative polysaccharides, namely sodium alginate, pectin, and xanthan gum. Microfiltration membranes composed of hydrophilic and hydrophobic PVDF, mixed cellulose ester, as well as hydrophilic and hydrophobic PTFE were used as filter media. The f

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Naseer, Danyal, Jang-Hoon Ha, Jongman Lee, and In-Hyuck Song. "Preparation of Al2O3 Multichannel Cylindrical-Tube-Type Microfiltration Membrane with Surface Modification." Applied Sciences 12, no. 16 (2022): 7993. http://dx.doi.org/10.3390/app12167993.

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Membrane technology has become a highly efficient separation technology for industrial applications over the past few decades. The key requirements for porous ceramic membranes are mechanical stability, controlled pore morphology, and high permeability. However, only a few studies have been conducted to optimise commercial membrane filters. In this study, a multichannel cylindrical-tube-type support with a microfiltration (MF) coating was prepared. To design a reliable porous structure and avoid shrinkage defects, the support layer was extruded using a combination of different-sized Al2O3 part

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Banerjee, A., M. Lambertson, J. Lozier, and C. Colvin. "Monitoring membrane integrity using high sensitivity laser turbidimetry." Water Supply 1, no. 5-6 (2001): 273–76. http://dx.doi.org/10.2166/ws.2001.0123.

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Membrane filtration plants for drinking water typically use pressure decay testing in conjunction with particle counting and turbidity to monitor membrane integrity. Pilot plants offer the capability of monitoring permeate quality with both intact and intentionally compromised membranes. We compare data from a particle counter, a pressure decay test and a laser turbidimeter on pilot plants from two different manufacturers of microfiltration membranes.

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Akal, Ceren, and Birce Mercanoğlu Taban. "Mikrofiltrasyon Uygulamasının Çiğ Sütün Mikrobiyel Kalitesine Etkisi." Turkish Journal of Agriculture - Food Science and Technology 8, no. 9 (2020): 1935–41. http://dx.doi.org/10.24925/turjaf.v8i9.1935-1941.3568.

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Although the milk’s predominant microflora consists of lactic acid bacteria, it is probable that pathogenic bacteria such as Listeria, Brucella, Mycobacterium, Staphylococcus, Escherichia coli O157: H7 and Salmonella are also present. Due to the fact that milk contains components with high nutritional value and therefore suitable for the growth of microorganisms, the microorganism populations in the milk can reach to the numbers that can threat human health in a short time. Therefore, it is very important to ensure the microbial safety of the milk before it is consumed. Microfiltration, one of

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Mecha, Achisa C., Martha N. Chollom, Bakare F. Babatunde, Emmanuel K. Tetteh, and Sudesh Rathilal. "Versatile Silver-Nanoparticle-Impregnated Membranes for Water Treatment: A Review." Membranes 13, no. 4 (2023): 432. http://dx.doi.org/10.3390/membranes13040432.

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Increased affordability, smaller footprint, and high permeability quality that meets stringent water quality standards have accelerated the uptake of membranes in water treatment. Moreover, low pressure, gravity-based microfiltration (MF) and ultrafiltration (UF) membranes eliminate the use of electricity and pumps. However, MF and UF processes remove contaminants by size exclusion, based on membrane pore size. This limits their application in the removal of smaller matter or even harmful microorganisms. There is a need to enhance the membrane properties to meet needs such as adequate disinfec

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Gupta, Vandana, and Anandkumar J. "Protein Separation Using Fly-ash Microfiltration Ceramic Membrane." Vol 3 No 2 (2018) 3, no. 2 (2018): 17–25. http://dx.doi.org/10.30732/ijbbb.20180302002.

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In this study, separation of protein (bovine serum albumin (BSA)) was carried out by ceramic microfiltration membranes. Ceramic membranes were fabricated by using fly-ash with different proportion (2-8 wt%) of fuller clay and fraction (20 wt%) of inorganic additives. Synthesized ceramic membranes were characterized using scanning electron microscope, X-ray diffraction analysis, mechanical-chemical stability, porosity and pure water flux. It was observed that the mechanical and chemical stability of ceramic membrane increases with increase in fuller clay’s content. Ceramic membrane with 8% full

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Rodríguez-Sáez, Laura, Sotiris I. Patsios, Jorge Senán-Salinas, Junkal Landaburu-Aguirre, Serena Molina, and Eloy García-Calvo. "A Novel Application of Recycled Ultrafiltration Membranes in an Aerobic Membrane Bioreactor (aMBR): A Proof-of-Concept Study." Membranes 12, no. 2 (2022): 218. http://dx.doi.org/10.3390/membranes12020218.

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The use of recycled ultrafiltration (r-UF) membranes, originating from end-of-life reverse osmosis membranes, as submerged flat-sheet membranes in an aerobic membrane bioreactor (aMBR) system is described herein for the first time. A feasibility study of this new approach was performed in a laboratory-scale aMBR system. The r-UF membrane performance was evaluated in terms of permeability, fouling behavior, and permeate quality using a widely used commercial flat sheet microfiltration membrane (c-MF) as a reference. Tests were conducted under steady-flux operation (at 12 and 14 L·m−2·h−1) and a

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Niavarani, Zahra, Daniel Breite, Andrea Prager, Bernd Abel, and Agnes Schulze. "Estradiol Removal by Adsorptive Coating of a Microfiltration Membrane." Membranes 11, no. 2 (2021): 99. http://dx.doi.org/10.3390/membranes11020099.

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This work demonstrates the enhancement of the adsorption properties of polyethersulfone (PES) microfiltration membranes for 17β-estradiol (E2) from water. This compound represents a highly potent endocrine-disrupting chemical (EDC). The PES membranes were modified with a hydrophilic coating functionalized by amide groups. The modification was performed by the interfacial reaction between hexamethylenediamine (HMD) or piperazine (PIP) as the amine monomer and trimesoyl chloride (TMC) or adipoyl chloride (ADC) as the acid monomer on the surface of the membrane using electron beam irradiation. Th

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Vasic, Vesna, Marina Sciban, Aleksandar Jokic, Jelena Prodanovic, and Dragana Kukic. "Microfiltration of distillery stillage: Influence of membrane pore size." Acta Periodica Technologica, no. 43 (2012): 217–24. http://dx.doi.org/10.2298/apt1243217v.

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Stillage is one of the most polluted waste products of the food industry. Beside large volume, the stillage contains high amount of suspended solids, high values of chemical oxygen demand and biological oxygen demand, so it should not be discharged in the nature before previous purification. In this work, three ceramic membranes for microfiltration with different pore sizes were tested for stillage purification in order to find the most suitable membrane for the filtration process. Ceramic membranes with a nominal pore size of 200 nm, 450 nm and 800 nm were used for filtration. The influence o

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Şuta, Silvia, György Thalmaier, Niculina Sechel, Ioan Vida-Simiti, and Valentin Petrescu. "Ti-Al Membranes for Microfiltration." Solid State Phenomena 254 (August 2016): 8–13. http://dx.doi.org/10.4028/www.scientific.net/ssp.254.8.

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Porous membranes made of Ti – 48 at. % Al intermetallic compound was obtained by elemental powder synthesis. These disks can be used as microfiltration membranes due to their low pores size and interconnected porosity. During this study titanium (purity 99.5%) and aluminum (purity 99 %) with low particle size range were mixed in corresponding ratios. The powder mixture was pressed at 500 MPa and the samples were heat treated in two stages. In the first step is the forming of Al3Ti compound by a solid state reaction at a temperature of 640 °C, slightly below the melting point of aluminum. In th

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Wang, Xinying, Scott M. Husson, Xianghong Qian, and S. Ranil Wickramasinghe. "Inverse colloidal crystal microfiltration membranes." Journal of Membrane Science 365, no. 1-2 (2010): 302–10. http://dx.doi.org/10.1016/j.memsci.2010.09.020.

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Suchecka, Teresa, Elzbieta Biernacka, and Wojciech Piatkiewicz. "Microorganism Retention on Microfiltration Membranes." Filtration & Separation 40, no. 8 (2003): 50–55. http://dx.doi.org/10.1016/s0015-1882(03)00830-9.

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Al-Malack, Muhammad H., and G. K. Anderson. "Crossflow microfiltration with dynamic membranes." Water Research 31, no. 8 (1997): 1969–79. http://dx.doi.org/10.1016/s0043-1354(96)00313-2.

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