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Journal articles on the topic 'Membrane treatments'

Author: Grafiati

Published: 20 July 2024

Last updated: 31 July 2025

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1

Passalacqua, Enza, Rolando Pedicini, Alessandra Carbone, et al. "Effects of the Chemical Treatment on the Physical-Chemical and Electrochemical Properties of the Commercial Nafion™ NR212 Membrane." Materials 13, no. 22 (2020): 5254. http://dx.doi.org/10.3390/ma13225254.

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Polymer Electrolyte Fuel Cells (PEFCs) are one of the most promising power generation systems. The main component of a PEFC is the proton exchange membrane (PEM), object of intense research to improve the efficiency of the cell. The most commonly and commercially successful used PEMs are Nafion™ perfluorosulfonic acid (PFSA) membranes, taken as a reference for the development of innovative and alternative membranes. Usually, these membranes undergo different pre-treatments to enhance their characteristics. With the aim of understanding the utility and the effects of such pre-treatments, in thi

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Malczewska, Beata, Paweł Lochyński, Sylwia Charazińska, Andrzej Sikora, and Ramin Farnood. "Electrospun Silica-Polyacrylonitrile Nanohybrids for Water Treatments." Membranes 13, no. 1 (2023): 72. http://dx.doi.org/10.3390/membranes13010072.

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In this work, the removal of NOM (natural organic matter) as represented by humic acid by means of electrospun nanofiber adsorptive membranes (ENAMs) is described. Polyacrylonitrile (PAN) was used for the preparation of ENAMs incorporating silica nanoparticles as adsorbents. The addition of silica to the polymer left visible changes on the structural morphology and fibers’ properties of the membrane. The membrane samples were characterized by pure water permeability, contact angle measurement, SEM, XPS, and XRD. This study assesses the preliminary performance of PAN-Si membranes for the remova

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Cao, Danyu, Lili Gai, Debao Niu, et al. "Purification of Camellia Oil by Inorganic Ceramic Membrane." Foods 11, no. 22 (2022): 3644. http://dx.doi.org/10.3390/foods11223644.

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Camellia oil is an edible health oil with high medicinal value. While phospholipids, peroxides, and free fatty acids are present in unrefined camellia virgin oil (CVO), which has a negative impact on the quality characteristics and storage stability. This paper is to investigate the testing effects of transmembrane pressure and temperature on the membrane flux and degumming (the removal of colloidal substances from crude oil and which is mainly phospholipids) to determine the optimum process parameters for the purification of CVO. On this basis, the effects of purification treatments applied b

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Zhao, Yang, and Liang Duan. "Research on Measuring Pure Membrane Electrical Resistance under the Effects of Salinity Gradients and Diffusion Boundary Layer and Double Layer Resistances." Membranes 12, no. 8 (2022): 816. http://dx.doi.org/10.3390/membranes12080816.

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Forward osmosis membranes are an emerging technology with great potential applicability in energy-efficient wastewater treatments and the differentiation between two solutions. Such solutions often differ in their concentrations or compositions. In this study, the membrane electrical resistances of three different membranes, including cation or anion-exchange membranes and forward osmosis membranes, were analyzed by Luggin capillary coupled with AC impedance spectroscopy (EIS) so as to obtain the real membrane and ion transfer impedance values near the membrane interface. The results reveal th

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Joshi, Ritika, Nilay Sebat, Kai Chi, et al. "Low Fouling Nanostructured Cellulose Membranes for Ultrafiltration in Wastewater Treatment." Membranes 13, no. 2 (2023): 147. http://dx.doi.org/10.3390/membranes13020147.

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Ultrafiltration (UF) is a common technique used in wastewater treatments. However, the issue of membrane fouling in UF can greatly hinder the effectiveness of the treatments. This study demonstrated a low-fouling composite cellulose membrane system based on microfibrillated cellulose (MFC) and silica nanoparticle additives. The incorporation of ‘non-spherical’ silica nanoparticles was found to exhibit better structural integration in the membrane (i.e., minimal aggregation of silica nanoparticles in the membrane scaffold) as compared to spherical silica. The resulting composite membranes were

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Sehgal, S., B. P. Nayak, I. Haque, and R. Tiwari. "Comparison of Fabrication Process of Poly(methyl methacrylate) (PMMA) Membranes and their Amine Functionalization Studies for Application in Biosensing." Asian Journal of Chemistry 36, no. 9 (2024): 2056–62. http://dx.doi.org/10.14233/ajchem.2024.32116.

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The comparison of the fabrication process of poly(methyl methacrylate) (PMMA) membranes and their functionalization on the basis of various characterization studies to produce a robust, stable and adherent amine functionalized surface for application in biosensing was attempted in present work. PMMA membrane fabricated using solution casting and compression moulding were characterized morphologically using electron microscopy (SEM) and functionalized with O2, N2 and He plasma at the same discharge conditions followed by deposition of (3-aminopropyl)triethoxysilane (3-APTES), an alkoxysilane, o

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Sallakhniknezhad, Reza, Manijeh Khorsi, Ali Sallakh Niknejad, et al. "Enhancement of Physical Characteristics of Styrene–Acrylonitrile Nanofiber Membranes Using Various Post-Treatments for Membrane Distillation." Membranes 11, no. 12 (2021): 969. http://dx.doi.org/10.3390/membranes11120969.

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Insufficient mechanical strength and wide pore size distribution of nanofibrous membranes are the key hindrances for their concrete applications in membrane distillation. In this work, various post-treatment methods such as dilute solvent welding, vapor welding, and cold-/hot-pressing processes were used to enhance the physical properties of styrene–acrylonitrile (SAN) nanofiber membranes fabricated by the modified electrospinning process. The effects of injection rate of welding solution and a working distance during the welding process with air-assisted spraying on characteristics of SAN nan

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Soumyadeep, Bhaduri, and Mazumder Debabrata. "Scope of aerobic and anaerobic membrane bioreactor in industrial wastewater treatment." Journal of Indian Chemical Society Vol. 97, No. 12b, Dec 2020 (2020): 2771–76. https://doi.org/10.5281/zenodo.5656205.

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Department of Civil Engineering, Indian Institute of Engineering Science and Technology (IIEST), Shibpur, Howrah-711 103, West Bengal, India <em>E-mail:</em> bhaduri.soumyadeep@gmail.com <em>Manuscript received online 07 December 2020, accepted 27 December 2020</em> The objective of this paper is to present the current status of membrane bioreactor in industrial wastewater treatment. Membrane bioreactor has been used in treating various type of industrial wastewater due to its advantages over conventional biological treatments. Membrane bioreactors are used in industries like textile, tannery,

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Sánchez-Villalba, Esther, María Elena Arias, Fabiola Zambrano, Pía Loren, and Ricardo Felmer. "Improved exogenous DNA uptake in bovine spermatozoa and gene expression in embryos using membrane destabilizing agents in ICSI-SMGT." Zygote 26, no. 1 (2018): 104–9. http://dx.doi.org/10.1017/s0967199417000727.

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SummarySperm-mediated gene transfer (SMGT) is a simple, fast, and economical biotechnological tool for producing transgenic animals. However, transgene expression with this technique in bovine embryos is still inefficient due to low uptake and binding of exogenous DNA in spermatozoa. The present study evaluated the effects of sperm membrane destabilization on the binding capacity, location and quantity of bound exogenous DNA in cryopreserved bovine spermatozoa using Triton X-100 (TX-100), lysolecithin (LL) and sodium hydroxide (NaOH). Effects of these treatments were also evaluated by intracyt

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Sakai, Kiyotaka. "History of Hemodialysis Treatments - From DeviceEngineering Points of View -." MEMBRANE 37, no. 1 (2012): 2–9. http://dx.doi.org/10.5360/membrane.37.2.

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Kennedy, Deirdre, Ultan P. Cronin, and Martin G. Wilkinson. "Responses of Escherichia coli, Listeria monocytogenes, and Staphylococcus aureus to Simulated Food Processing Treatments, Determined Using Fluorescence-Activated Cell Sorting and Plate Counting." Applied and Environmental Microbiology 77, no. 13 (2011): 4657–68. http://dx.doi.org/10.1128/aem.00323-11.

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ABSTRACTThree common food pathogenic microorganisms were exposed to treatments simulating those used in food processing. Treated cell suspensions were then analyzed for reduction in growth by plate counting. Flow cytometry (FCM) and fluorescence-activated cell sorting (FACS) were carried out on treated cells stained for membrane integrity (Syto 9/propidium iodide) or the presence of membrane potential [DiOC2(3)]. For each microbial species, representative cells from various subpopulations detected by FCM were sorted onto selective and nonselective agar and evaluated for growth and recovery rat

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Nagappan, Subbiah, David Phinney, and Dennis Heldman. "Management of Waste Streams from Dairy Manufacturing Operations Using Membrane Filtration and Dissolved Air Flotation." Applied Sciences 8, no. 12 (2018): 2694. http://dx.doi.org/10.3390/app8122694.

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Membrane filtration can provide a significant role in the management of waste streams from food manufacturing operations. The objective of this research was to evaluate the reductions in the organic content of waste streams accomplished when using membrane filtration. Reductions in Chemical Oxygen Demand (COD) by membrane filtration were compared to a Dissolved Air Floatation (DAF) system. Membranes with six different pore sizes (200, 20, 8, 4, 0.083, and 0.058 kDa) were evaluated. In addition, the various membrane treatments were applied after the DAF as an additional level of comparison. The

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Selim, Asmaa, Gábor Pál Szijjártó, and András Tompos. "Insights into the Influence of Different Pre-Treatments on Physicochemical Properties of Nafion XL Membrane and Fuel Cell Performance." Polymers 14, no. 16 (2022): 3385. http://dx.doi.org/10.3390/polym14163385.

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Perfluorosulfonic acid (PFSA) polymers such as Nafion are the most frequently used Proton Exchange Membrane (PEM) in PEM fuel cells. Nafion XL is one of the most recently developed membranes designed to enhance performance by employing a mechanically reinforced layer in the architecture and a chemical stabilizer. The influence of the water and acid pre-treatment process on the physicochemical properties of Nafion XL membrane and Membrane Electrode Assembly (MEA) was investigated. The obtained results indicate that the pre-treated membranes have higher water uptake and dimensional swelling rati

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Charcosset, Catherine. "A Review on Membranes for Clinical Treatment and Drug Delivery in Medical Applications." International Journal of Membrane Science and Technology 3, no. 1 (2016): 22–38. http://dx.doi.org/10.15379/ijmst.v3i1.579.

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Membrane processes are used extensively in biomedical applications. This state of the art review presents the main applications including renal kidney, blood filtration, blood oxygenator, artificial liver, artificial pancreas, and drug delivery devices. For well-established treatments like dialysis, plasmapheresis, and blood oxygenator, the techniques are summarized by presenting membranes used, devices, configurations and treatments. The artificial liver and the artificial pancreas are not clinically used and some main aspects related to the development of these devices are given, including c

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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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Harder, T., R. Kellner, R. G. Parton, and J. Gruenberg. "Specific release of membrane-bound annexin II and cortical cytoskeletal elements by sequestration of membrane cholesterol." Molecular Biology of the Cell 8, no. 3 (1997): 533–45. http://dx.doi.org/10.1091/mbc.8.3.533.

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Annexin II is an abundant protein which is present in the cytosol and on the cytoplasmic face of plasma membrane and early endosomes. It is generally believed that this association occurs via Ca(2+)-dependent binding to lipids, a mechanism typical for the annexin protein family. Although previous studies have shown that annexin II is involved in early endosome dynamics and organization, the precise biological role of the protein is unknown. In this study, we found that approximately 50% of the total cellular annexin was associated with membranes in a Ca(2+)-independent manner. This binding was

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Hidalgo, Asunción María, María Dolores Murcia, María Gómez, M. Mar Collado-González, María Claudia Montiel, and Marta Martínez. "Comparison of Sulfamethoxazole Removal Efficiency Using Polyethersulfone Ultrafiltration Membrane Modified by Various Methods." Materials 17, no. 24 (2024): 6247. https://doi.org/10.3390/ma17246247.

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Nowadays, there is a growing interest in membrane modification processes to improve their characteristics and the effectiveness of their treatments and reduce the possible fouling. In this sense, in this work, a modification of an ultrafiltration membrane with three different materials has been carried out: reduced graphene oxide (rGO), chitosan and MgCl2. For both the native and the modified membranes, a study has been carried out to remove the emerging contaminant sulfamethoxazole (SMX). SEM and SEM-EDX analyses have been performed to confirm membrane surface modifications. In the characteri

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Chen, Kai, Xue Li, Hongyan Zhu, Qiyong Gong, and Kui Luo. "Endocytosis of Nanoscale Systems for Cancer Treatments." Current Medicinal Chemistry 25, no. 25 (2018): 3017–35. http://dx.doi.org/10.2174/0929867324666170428153056.

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Advances in nanoscale systems for cancer treatment have been involved in enabling highly regulated site-specific localization to sub cellular organelles hidden beneath cell membranes. So far, the cellular entry of these nanoscale systems has not been fully understood. Endocytosis is an energy-dependent process of active transport in which elected extracellular molecules (such as proteins, viruses, micro-organisms and nanoscale systems) are engulfed into the cell. This process appears at the plasma membrane surface and contains internalization of the cell membrane as well as the membrane protei

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Reig, Mònica, Xanel Vecino, and José Luis Cortina. "Use of Membrane Technologies in Dairy Industry: An Overview." Foods 10, no. 11 (2021): 2768. http://dx.doi.org/10.3390/foods10112768.

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The use of treatments of segregated process streams as a water source, as well as technical fluid reuse as a source of value-added recovery products, is an emerging direction of resource recovery in several applications. Apart from the desired final product obtained in agro-food industries, one of the challenges is the recovery or separation of intermediate and/or secondary metabolites with high-added-value compounds (e.g., whey protein). In this way, processes based on membranes, such as microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO), could be integra

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Liu, Yu-Jing, Yan-Nan Lu, Dong-Qing Liang, Yin-Shuang Hu, and Yu-Xi Huang. "Multi-Layered Branched Surface Fluorination on PVDF Membrane for Anti-Scaling Membrane Distillation." Membranes 12, no. 8 (2022): 743. http://dx.doi.org/10.3390/membranes12080743.

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Membrane distillation (MD) has emerged as a promising technology for hypersaline wastewater treatment. However, membrane scaling is still a critical issue for common hydrophobic MD membranes. Herein, we report a multi-layered surface modification strategy on the commercial polyvinylidene fluoride (PVDF) membrane via plasma treatment and surface fluorination cycles. The repeated plasma treatment process generates more reaction sites for the fluorination reaction, leading to higher fluorination density and more branched structures. MD tests with CaSO4 as the scaling agent show that the modificat

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Lee, Sungsu, Han Yen Tan, Ivayla I. Geneva, Aleksandr Kruglov, and Peter D. Calvert. "Actin filaments partition primary cilia membranes into distinct fluid corrals." Journal of Cell Biology 217, no. 8 (2018): 2831–49. http://dx.doi.org/10.1083/jcb.201711104.

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Physical properties of primary cilia membranes in living cells were examined using two independent, high-spatiotemporal-resolution approaches: fast tracking of single quantum dot–labeled G protein–coupled receptors and a novel two-photon super-resolution fluorescence recovery after photobleaching of protein ensemble. Both approaches demonstrated the cilium membrane to be partitioned into corralled domains spanning 274 ± 20 nm, within which the receptors are transiently confined for 0.71 ± 0.09 s. The mean membrane diffusion coefficient within the corrals, Dm1 = 2.9 ± 0.41 µm2/s, showed that th

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Touze-Soulet, J. M., J. D. Weete, M. Sancholle, J. Rami, and R. Dargent. "Influence of biotin on the lipid composition of plasma membranes from Hypomyces chlorinus." Biochemistry and Cell Biology 68, no. 1 (1990): 138–44. http://dx.doi.org/10.1139/o90-018.

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Subfractions of microsomal membranes from the biotin heteroauxotroph Hypomyces chlorinus Tul., cultured in media containing optimal or suboptimal levels of the vitamin, were isolated using a two-phase polymer system and characterized as plasma membrane-enriched on the basis of absence of Zn2+-induced aggregation, enrichment of appropriate enzyme markers, and phosphotungstic acid – chromic acid staining. The protein/lipid ratio of membranes from the biotin-sufficient and -deficient cultures was 2; the phospholipid content was 126 and 181 μg/mg protein; and the sterol/phospholipid molar ratios w

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Li, Shufeng, Xuelin Li, Pengfei Fu та Yao Zhang. "Alkali-Grafting Proton Exchange Membranes Based on Co-Grafting of α-Methylstyrene and Acrylonitrile into PVDF". Polymers 14, № 12 (2022): 2424. http://dx.doi.org/10.3390/polym14122424.

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A novel alkali-induced grafting polymerization was designed to synthesize a PFGPA proton exchange membrane based on the co-grafting of α-methyl styrene (AMS) and acrylonitrile (AN) into the poly(vinylidenedifluoride) (PVDF) membrane. Three kinds of alkali treatments were used: by immersing the PVDF membranes into a 1 M NaOH solution and mixing the PVDF powders with 16% or 20% Na4SiO4. Then, AMS with AN could be co-grafted into the PVDF backbones in two grafting solvents, THF or IPA/water. Finally, the grafted membranes were sulfonated to provide the PFGPA membranes. In the experiments, the Na4

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Ji, Zuohui, Yue Zhao, Min Zhang, Xiaopeng Li, and Heguo Li. "Surface Modification of ETFE Membrane and PTFE Membrane by Atmospheric DBD Plasma." Membranes 12, no. 5 (2022): 510. http://dx.doi.org/10.3390/membranes12050510.

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Fluorine resin membranes with excellent chemical resistance have great potential for the application of high-performance chemical protective clothing. However, it is difficult to integrate fluorine resins into other materials such as fabrics due to their lower surface energy and poor bondability, making the fabrication of composite fabrics and the further seal splicing challenging. In this study, atmospheric pressure dielectric barrier discharge (DBD) plasma in helium (He) and helium/acrylic acid (He/AA) mixture atmospheres were used to modify two kinds of fluorine resins, ethylene tetrafluoro

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Kertész, Szabolcs, Aws N. Al-Tayawi, Gréta Gergely, et al. "Investigation of Different Pre-Treatment Techniques and 3D Printed Turbulence Promoter to Mitigate Membrane Fouling in Dairy Wastewater Module." Materials 16, no. 8 (2023): 3117. http://dx.doi.org/10.3390/ma16083117.

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This study investigates the enhancement of dairy wastewater treatment using chemical and physical pre-treatments coupled with membrane separation techniques to reduce membrane fouling. Two mathematical models, namely the Hermia and resistance-in-series module, were utilized to comprehend the mechanisms of ultrafiltration (UF) membrane fouling. The predominant fouling mechanism was identified by fitting experimental data into four models. The study calculated and compared permeate flux, membrane rejection, and membrane reversible and irreversible resistance values. The gas formation was also ev

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Dwi Jayanti, Denik, Asnawati Asnawati, Dwi Indarti, Donatus S. Purwo Handoko, and Bambang Piluharto. "Effect of pH in Coagulation Bath on Polysulfone-based Membrane Formation and Its Performance Characteristics." Indonesian Chimica Letters 1, no. 1 (2022): 13–16. http://dx.doi.org/10.19184/icl.v1i1.6.

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One of the factors that determine the formation of the membrane is the solution in the coagulation bath (non-solvent). In this study, the effect of pH treatment on the coagulation bath solution on membrane formation and its effect on membrane performance will be studied. The pH of the coagulation bath used was pH 1, 6.8 and 12. As the results, physically the three pH treatments produced the same white (opaque) membrane. Through morphological analysis, it appears that the three pH treatments produced an asymmetric membrane consisting of a top layer and a sublayer. The surface of the membrane wi

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Diena, Nurin Nisa Farah, Mahmud Mahmud, Rony Riduan, and Ahmad Kurnain. "Performance of Activated Carbon Adsorption and Ultrafiltration Membrane Hybrid Process for Leachate Treatment." TROPICAL WETLAND JOURNAL 4, no. 1 (2018): 17–20. http://dx.doi.org/10.20527/twj.v4i1.58.

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Leachate is wastewater that contains pollutants dominated by organic matter. Conventional leachate treatments have some disadvantages therefore alternative treatments are needed. One of that alternative treatments is ultrafiltration membrane and adsorption as pretreatment. The aims of this study are to analyze adsorption isotherm and kinetic model for UV254 (UV adsorbance at 254 nm wavelength) adsorption, the performance of powdered activated carbon (PAC) adsorption and ultrafiltration membrane hybrid process for UV254 of leachate removal, and the effect of pretreatment towards membrane foulin

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Sampathkumar, Balamurugan, George G. Khachatourians, and Darren R. Korber. "High pH during Trisodium Phosphate Treatment Causes Membrane Damage and Destruction of Salmonella enterica Serovar Enteritidis." Applied and Environmental Microbiology 69, no. 1 (2003): 122–29. http://dx.doi.org/10.1128/aem.69.1.122-129.2003.

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ABSTRACT Trisodium phosphate (TSP) is now widely used during the processing of poultry and red meats, but the mechanism whereby it inactivates gram-negative bacteria such Salmonella spp. remains unclear. Thus, Salmonella enterica serovar Enteritidis (ATCC 4931) cells were treated with different concentrations of TSP (1.5, 2.0, and 2.5% [wt/vol]) and compared with (i) cells treated with the same pH as the TSP treatments (pH 10.0, 10.5, and 11.0, respectively) and (ii) cells treated with different concentrations of TSP (1.5, 2.0, and 2.5% [wt/vol]) adjusted to a pH of 7.0 ± 0.2 (mean ± standard

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Alshahrani, Ahmed A., Abeer A. El-Habeeb, Arwa A. Almutairi, et al. "Preparation, Characterization and Evaluation of Polyamide-Reduced Graphene Oxide as Selective Membranes for Water Purification." Journal of Composites Science 8, no. 1 (2024): 24. http://dx.doi.org/10.3390/jcs8010024.

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Amidst the ongoing advancements in membrane technology, a leading method has come to the forefront. Recent research has emphasized the substantial influence of surface attributes in augmenting the effectiveness of thin-film membranes in water treatments. These studies reveal how surface properties play a crucial role in optimizing the performance of these membranes, further establishing their prominence in the field of membrane technology. This recognition stems from the precise engineering of surfaces, ensuring they meet the demanding requirements of advanced separation processes. This study

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Hajaratul Najwa Mohamed, Norazlina Hashim, Mohamad Shahairy Fahmi Affandi, and Meor Najmuddin Meor Suzurudin. "Development and In-vitro Evaluation of Konjac Glucomannan/Virgin Coconut Oil Based Asymmetric Membrane for Wound Dressing." Journal of Advanced Research in Applied Sciences and Engineering Technology 47, no. 2 (2024): 138–47. http://dx.doi.org/10.37934/araset.47.2.138147.

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Asymmetric membranes have promising features for use in wound dressings. A permeable bottom layer absorbs the wound exudate, whereas the occlusive top layer restricts microbiological penetration and avoids an excessive loss of water. Recently, asymmetric membranes made of konjac glucomannan (KGM), a natural polysaccharide, have been explored as potential wound treatments. However, there are no studies reported regarding the incorporation of other materials into KGM asymmetric membrane. Due to its biocompatibility and antimicrobial properties, virgin coconut oil (VCO) is a good choice for promo

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Hamada, Toyozo, Yasumitsu Miyazaki, and Yoshiki Kinoshita. "Reuse System for Car Wash Water by Flocculation, Ultrafiltration and Activated Carbon Treatments." membrane 29, no. 1 (2004): 73–76. http://dx.doi.org/10.5360/membrane.29.73.

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Agnestisia, Retno, and Rendy Muhamad Iqbal. "A Novel Cerrena caperata Fungal Membrane: Antibacterial Effect of Deacetylation and Fatty Acid Coating." Jurnal Kimia Riset 10, no. 1 (2025): 127–41. https://doi.org/10.20473/jkr.v10i1.72415.

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Biofouling commonly occurred due to the accumulation of bacteria that blocked membrane pores, especially in fungal-derived membrane technology. Surface modification of Cerrena caperata fungal membrane was carried out in this study to enhance its antibacterial activity, which can be expected to prevent biofouling on the membrane surface. This modification is crucial to ensure the ability of the membrane to inhibit or kill pathogenic bacteria during water purification, ultimately producing safer water in the future. The membrane was synthesized from C. caperata mycelium cultured in potato dextro

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Darbandi, Fatemeh, Azadeh Mousavi, Tayebe Bagheri Lotfabad, Amir Heydarinasab, and Soheila Yaghmaei. "Azo dye removal via surfactant-assisted polyvinylidene fluoride membrane." Environmental Health Engineering and Management 8, no. 1 (2021): 25–32. http://dx.doi.org/10.34172/ehem.2021.04.

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Background: Recently, concerns have been raised regarding the environmental and public health safety of azo dyes, the most widely used synthetic dyes. The membrane technique has been introduced as one of the efficient methods for dye removal treatments. Polyvinylidene fluoride (PVDF) membrane manipulated by surfactants was studied for removal of the azo dye, carmoisine. Methods: PVDF membrane was prepared via non-solvent-induced phase separation (NIPS) and used to remove the azo dye, carmoisine. Three nonionic surfactants including Tween 20, Tween 60, and Tween 80 were used individually as add

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Nauman, Saad, Gilles Lubineau, and Hamad F. Alharbi. "Post Processing Strategies for the Enhancement of Mechanical Properties of ENMs (Electrospun Nanofibrous Membranes): A Review." Membranes 11, no. 1 (2021): 39. http://dx.doi.org/10.3390/membranes11010039.

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Electrospinning is a versatile technique which results in the formation of a fine web of fibers. The mechanical properties of electrospun fibers depend on the choice of solution constituents, processing parameters, environmental conditions, and collector design. Once electrospun, the fibrous web has little mechanical integrity and needs post fabrication treatments for enhancing its mechanical properties. The treatment strategies include both the chemical and physical techniques. The effect of these post fabrication treatments on the properties of electrospun membranes can be assessed through e

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Nazari, Shayan S., Andrew D. Doyle, and Kenneth M. Yamada. "Mechanisms of Basement Membrane Micro-Perforation during Cancer Cell Invasion into a 3D Collagen Gel." Gels 8, no. 9 (2022): 567. http://dx.doi.org/10.3390/gels8090567.

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Cancer invasion through basement membranes represents the initial step of tumor dissemination and metastasis. However, little is known about how human cancer cells breach basement membranes. Here, we used a three-dimensional in vitro invasion model consisting of cancer spheroids encapsulated by a basement membrane and embedded in 3D collagen gels to visualize the early events of cancer invasion by confocal microscopy and live-cell imaging. Human breast cancer cells generated large numbers of basement membrane perforations, or holes, of varying sizes that expanded over time during cell invasion

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Yan, Zhongsen, Yuling Jiang, Lingshan Liu, et al. "Membrane Distillation for Wastewater Treatment: A Mini Review." Water 13, no. 24 (2021): 3480. http://dx.doi.org/10.3390/w13243480.

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Water serves as an indispensable part of human life and production. On account of the overexploitation of traditional water sources, the demand for wastewater recycling is expanding rapidly. As a promising water treatment process, membrane distillation (MD) has been utilized in various wastewater treatments, such as desalination brine, textile wastewater, radioactive wastewater, and oily wastewater. This review summarized the investigation work applying MD in wastewater treatment, and the performance was comprehensively introduced. Moreover, the obstructions of industrialization, such as membr

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Cameron, R. S., P. L. Cameron, and J. D. Castle. "A common spectrum of polypeptides occurs in secretion granule membranes of different exocrine glands." Journal of Cell Biology 103, no. 4 (1986): 1299–313. http://dx.doi.org/10.1083/jcb.103.4.1299.

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A highly purified membrane preparation from rat parotid secretion granules has been used as a comparative probe to examine the extent of compositional overlap in granule membranes of three other exocrine secretory tissues--pancreatic, lacrimal, and submandibular--from several standpoints. First, indirect immunofluorescent studies using a polyclonal polyspecific anti-parotid granule membrane antiserum has indicated a selective staining of granule membrane profiles in all acinar cells of all tissues. Second, highly purified granule membrane subfractions have been isolated from each exocrine tiss

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Fukuda, Makoto, Ryo Tanaka, Kazunori Sadano, et al. "Insights into Gradient and Anisotropic Pore Structures of Capiox® Gas Exchange Membranes for ECMO: Theoretically Verifying SARS-CoV-2 Permeability." Membranes 12, no. 3 (2022): 314. http://dx.doi.org/10.3390/membranes12030314.

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When using the extracorporeal capillary membrane oxygenator (sample A) for ECMO treatments of COVID-19 severely ill patients, which is dominantly used in Japan and worldwide, there is a concern about the risk of SARS-CoV-2 scattering from the gas outlet port of the membrane oxygenator. Terumo has launched two types of membranes (sample A and sample B), both of which are produced by the microphase separation processes using polymethylpentene (PMP) and polypropylene (PP), respectively. However, the pore structures of these membranes and the SARS-CoV-2 permeability through the membrane wall have

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Ahmed, Sadiq, and Andre Kaplan. "Therapeutic Plasma Exchange Using Membrane Plasma Separation." Clinical Journal of the American Society of Nephrology 15, no. 9 (2020): 1364–70. http://dx.doi.org/10.2215/cjn.12501019.

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Therapeutic plasma exchange is a blood purification technique designed for the removal of large molecular weight toxins such as pathogenic antibodies and lipoproteins. Plasma exchange can be performed either by membrane separation or centrifugation. Centrifugal plasma exchange is more common in the United States, while membrane separation is more popular in Germany and Japan. The membrane separation technique is similar to the ultrafiltration procedures performed with a standard dialysis machine but in which the membrane’s pores are large enough to allow removal of all circulating molecules wh

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Cerio, RJ, F. Xing, RJ Fatula, et al. "Structurally distinct membrane-associated and soluble forms of GH-binding protein in the mouse." Journal of Endocrinology 172, no. 2 (2002): 321–31. http://dx.doi.org/10.1677/joe.0.1720321.

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It has previously been shown that the large increase in GH-binding capacity of mouse liver microsomes during pregnancy is due largely to an increase in the amount of GH-binding protein (GHBP), with a more modest increase in GH receptor (GHR). Here we show that mouse liver GHBP is predominantly present as a membrane-associated protein structurally distinct from the soluble form of GHBP present in serum. Liver GHBP is associated with both intracellular membranes and the plasma membrane. Membrane-associated GHBP and soluble GHBP appear to be identical polypeptides distinguished by the addition of

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Lyu, Chengqi, Zhengwei Shao, Derong Zou, and Jiayu Lu. "Ridge Alterations following Socket Preservation Using a Collagen Membrane in Dogs." BioMed Research International 2020 (March 4, 2020): 1–9. http://dx.doi.org/10.1155/2020/1487681.

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Background. The healing process following tooth extraction results in alveolar ridge resorption. The dimensional changes may complicate the subsequent implant procedure. Socket preservation using absorbable collagen membranes or a combination of membranes with calcium phosphate cement (CPC) particles might ensure that the alveolar ridge retains a suitable morphology for implant placement. Objective. To evaluate the quality and quantity of new bone regenerated after application of either collagen membranes alone covering the sockets or a combination of membranes with CPC particles added into th

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Willison, J. H. M., M. I. N. Zhang, and L. V. Gusta. "A freeze-fracture study of the influence of frost hardening treatments on the plasma membranes of Medicago sativa and Bromus inermis cell suspension cultures." Canadian Journal of Botany 68, no. 5 (1990): 949–54. http://dx.doi.org/10.1139/b90-121.

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Freeze-fractured suspension cultured cells of alfalfa (Medicago sativa L.) and bromegrass (Bromus inermis Leyss) were examined before and after frost hardening treatments for evidence of plasma membrane adaptation to frost. No chemical fixatives or cryoprotective agents were used and care was taken to ensure that there was no subjective bias in making counts of intramembrane particles. There were no patches of membrane free of intramembrane particles in any of the treatments, and only small differences in intramembrane particles frequencies were found. Cold hardening and abscisic acid hardenin

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Gross, Andreas, Arthur Morvezen, Pedro Castillo Gomez, Xuesong Xu, and Pei Xu. "Numerical Investigation of the Effect of Two-Dimensional Surface Waviness on the Current Density of Ion-Selective Membranes for Electrodialysis." Water 11, no. 7 (2019): 1397. http://dx.doi.org/10.3390/w11071397.

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Ion-selective membranes are an important component of electrodialysis stacks for desalination. Manufacturing imperfections or slight inhomogeneity of the material can lead to minute membrane surface imperfections. Two-dimensional solutions of the coupled Poisson–Nernst–Planck and Navier–Stokes equations were sought for a perfectly smooth membrane and for membranes with well-defined small-amplitude harmonic surface roughness. The simulations were carried out with the validated rheoEFoam solver by Pimenta and Alves. In the overlimiting regime, the electric field is strong enough for an electroki

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Charcosset, Catherine. "Classical and Recent Developments of Membrane Processes for Desalination and Natural Water Treatment." Membranes 12, no. 3 (2022): 267. http://dx.doi.org/10.3390/membranes12030267.

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Water supply and water treatment are of major concern all around the world. In this respect, membrane processes are increasingly used and reported for a large range of applications. Desalination processes by membranes are well-established technologies with many desalination plants implemented in coastal areas. Natural water treatment is also well implemented to provide purified water for growing population. This review covers various aspects of desalination: membranes and modules, plants, fouling (scaling, biofouling, algal blooms), cleaning, pretreatment (conventional and membrane treatments)

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Djoko Kusworo, Tutuk, Annizah Rahmatya Gerhana, and Noor Hanifah Angga Putra. "Enhancement Performance of Hybrid Membrane Zeolite/PES for Produced Water Treatment With Membrane Modification Using Combination of Ulta Violet Irradiation, Composition of Zeolite and Thermal Annealing." MATEC Web of Conferences 156 (2018): 08002. http://dx.doi.org/10.1051/matecconf/201815608002.

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Produced water is a wastewater from oil production that must be treated well. Membrane is one alternative of water treatments technology based on filtration method. However, in the use of membrane, there’s no exact optimal variable that influences membrane performance.This underlying research to assess factors that influences membrane performance to obtain optimal condition. Therefore, the objectives of this study are determining the effect of variable process in membrane fabrication and several modification techniques on membrane performance. The membranes were fabricated via dry-wet phase in

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Horiguchi, Towa, Takahiro Muto, Miwa Taguchi, and Mikihiro Nomura. "Development of water vapor recovery membrane for efficient recycling system." Journal of Physics: Conference Series 2812, no. 1 (2024): 012015. http://dx.doi.org/10.1088/1742-6596/2812/1/012015.

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Abstract In wastewater treatment at semiconductor plants separation operations are currently conducted mainly by distillation. Membrane distillation using ceramic surface-treated membranes is expected to provide more efficient separation. In this study, we investigated the improvement of acid resistance of surface-treated ceramic membranes by using four silicon alkoxides, Hexamethyldisiloxane(HMDS), Dimethyldimethoxysilane(DMDMOS), 3,3,3-Trifluoropropyltrimethoxysilane (TFPrTMOS), Tetramethoxysilane(TMOS) were used as surface treatment and it was performed in the gas phase. The water vapor per

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Sebokova, E., M. L. Garg, and M. T. Clandinin. "Modulation of receptor-mediated gonadotropin action in rat testes by dietary fat." American Journal of Physiology-Endocrinology and Metabolism 254, no. 6 (1988): E708—E712. http://dx.doi.org/10.1152/ajpendo.1988.254.6.e708.

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The effect of feeding diets enriched with 18:2 omega 6, 18:3 omega 3, or saturated fatty acids on lipid composition and receptor-mediated action of luteinizing hormone/human chorionic gonadotropin (LH/hCG) in rat testicular plasma membranes was investigated. Linoleic and alpha-linolenic acid treatments reduced total phospholipid and cholesterol content of the testicular plasma membrane and altered membrane phospholipid composition. Change in phospholipid and cholesterol content after feeding the polyunsaturated fats decreased cholesterol to phospholipid ratios and binding capacity of the LH/hC

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Bloch, Daria, Meirav Lavy, Yael Efrat, et al. "Ectopic Expression of an Activated RAC inArabidopsisDisrupts Membrane Cycling." Molecular Biology of the Cell 16, no. 4 (2005): 1913–27. http://dx.doi.org/10.1091/mbc.e04-07-0562.

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Rho GTPases regulate the actin cytoskeleton, exocytosis, endocytosis, and other signaling cascades. Rhos are subdivided into four subfamilies designated Rho, Racs, Cdc42, and a plant-specific group designated RACs/Rops. This research demonstrates that ectopic expression of a constitutive active Arabidopsis RAC, AtRAC10, disrupts actin cytoskeleton organization and membrane cycling. We created transgenic plants expressing either wild-type or constitutive active AtRAC10 fused to the green fluorescent protein. The activated AtRAC10 induced deformation of root hairs and leaf epidermal cells and wa

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Susanto, H., and M. Ulbricht. "Highly fouling resistant ultrafiltration membranes for water and wastewater treatments." Water Supply 8, no. 1 (2008): 19–24. http://dx.doi.org/10.2166/ws.2008.002.

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Control of fouling is a critical issue to increase the competitiveness of ultrafiltration (UF) membranes for drinking water and wastewater treatments. Highly fouling resistant UF membranes synthesized by photo-graft copolymerization of a water soluble monomer, poly(ethylene glycol) methacrylate (PEGMA), onto a polyethersulfone UF membrane have been evaluated with respect to the adsorptive as well as the ultrafiltration fouling. Protein, humic substance and polysaccharide solutions were used as the model for foulants occurring in the water sources for drinking water as well as in wastewater eff

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Mehanathan, Shaymala, Juhana Jaafar, Atikah Mohd Nasir, et al. "Adsorptive Membrane for Boron Removal: Challenges and Future Prospects." Membranes 12, no. 8 (2022): 798. http://dx.doi.org/10.3390/membranes12080798.

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The complexity of removing boron compounds from aqueous systems has received serious attention among researchers and inventors in the water treating industry. This is due to the higher level of boron in the aquatic ecosystem, which is caused by the geochemical background and anthropogenic factors. The gradual increase in the distribution of boron for years can become extremely toxic to humans, terrestrial organisms and aquatic organisms. Numerous methods of removing boron that have been executed so far can be classified under batch adsorption, membrane-based processes and hybrid techniques. Co

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