Results 11 to 20 of about 8,077 (199)

Ultra-Thin Ion Exchange Membranes by Low Ionomer Blending for Energy Harvesting [PDF]

Nanomaterials
Exploring the utilization of ion exchange membranes (IEMs) in salinity gradient energy harvesting, a technique that capitalizes on the salinity difference between seawater and freshwater to generate electricity, this study focuses on optimizing PVDF to ...
Jaehoon Jung, Soyeong Choi, Ilsuk Kang, Kiwoon Choi   +3 more
doaj   +2 more sources

Synthesis, characterisation and gas permeation studies on microporous silica and alumina-silica membranes for separation of propane and propylene [PDF]

, 1996
Microporous silica membranes are known to exhibit molecular sieving effects. However, separation of nearly equal sized molecules is difficult to carry out by size exclusion.
Burggraaf, Anthonie, Burggraaf, Anthonie J., Elferink, Wilma (Johanna), Gilde, M.J., Keizer, Klaas, Nair, Balagopal N., Verweij, H.   +6 more
core   +16 more sources

Correlations between Properties of Pore-Filling Ion Exchange Membranes and Performance of a Reverse Electrodialysis Stack for High Power Density

Membranes, 2021
The reverse electrodialysis (RED) stack-harnessing salinity gradient power mainly consists of ion exchange membranes (IEMs). Among the various types of IEMs used in RED stacks, pore-filling ion exchange membranes (PIEMs) have been considered promising ...
Hanki Kim, Jiyeon Choi, Namjo Jeong, Yeon-Gil Jung, Haeun Kim, Donghyun Kim, SeungCheol Yang   +6 more
doaj   +1 more source

The Glomerular Endothelium Restricts Albumin Filtration

Frontiers in Medicine, 2021
Inflammatory activation and/or dysfunction of the glomerular endothelium triggers proteinuria in many systemic and localized vascular disorders. Among them are the thrombotic microangiopathies, many forms of glomerulonephritis, and acute inflammatory ...
Barbara J. Ballermann, Jenny Nyström, Börje Haraldsson   +2 more
doaj   +1 more source

Poly(alkyl-biphenyl pyridinium)-Based Anion Exchange Membranes with Alkyl Side Chains Enable High Anion Permselectivity and Monovalent Ion Flux

Membranes, 2023
Poly(alkyl-biphenyl pyridinium)-based anion exchange membranes with alkyl side chains were synthesized for permselective anion separation. By altering the length of the grafted side chain, the hydrophilicity and other attributes of the membranes could be
Jin Yang, Qian Chen, Noor Ul Afsar, Liang Ge, Tongwen Xu   +4 more
doaj   +1 more source

Permselectivity of Cation Exchange Membranes Modified by Polyaniline

Membranes, 2021
This work discusses the applicability of polyaniline-modified cation exchange membranes for the separation of monovalent/divalent cations by electrodialysis.
Irina Falina, Natalia Loza, Sergey Loza, Ekaterina Titskaya, Nazar Romanyuk   +4 more
doaj   +1 more source

Electrochemical Characterization of Charged Membranes from Different Materials and Structures via Membrane Potential Analysis

Membranes, 2023
Electrochemical characterization of positively and negatively charged membranes is performed by analyzing membrane potential values on the basis of the Teorell–Meyer–Sievers (TMS) model. This analysis allows the separate estimation of Donnan (interfacial
Virginia Romero, Lourdes Gelde, Juana Benavente   +2 more
doaj   +1 more source

Environmentally-safe anion exchange membranes of PVA/PDDA/SiO2composite for reverse electrodialysis

International Journal of Thermofluids, 2023
Anion Exchange Membranes (AEMs) are positively charged polymer membrane used in many applications. In RED systems, AEMs could be used to separate ions to produce energy, and on the other hands remove unwanted molecules in wastewater.
Yusuf Wibisono, Eka Tiyas Anggraeni, Bambang Dwi Argo, Wahyunanto Agung Nugroho, Inggit Kresna Maharsih, Muhammad Roil Bilad   +5 more
doaj   +1 more source

Cation Exchange Nanocomposite Membrane Containing Mg(OH)2 Nanoparticles: Characterization and Transport Properties [PDF]

Journal of Nanostructures, 2018
In this study, ion exchange nanocomposite membranes was prepared by addition of Mg(OH)2 nanoparticles to a blend containing sulfonated polyphenylene oxide and sulfonated polyvinylchloride via a simple casting method.
Alireza Khodabakhshi, Farhad Heidary, Davood Ghanbari   +2 more
doaj   +1 more source

Comparison between molecularly imprinted polymers and β-cyclodextrin as ionophores, in presence of nano carbon dots water channels and application in marketed product and environmental samples

Archives of Pharmaceutical Sciences Ain Shams University, 2022
Large molecules pass the biological membranes through accessory elements, either carriers (ionophores) and/or water channels. Ionophores shield the charge of the target ion, enabling it to cross the membrane to be released on the other side.
Miriam Ayad, Amira El-kosasy, Ahmed Sheta, Shereen Tawakkol, Ahmed Fayed   +4 more
doaj   +1 more source