نتایج جستجو برای: cation exchange membranes composites

تعداد نتایج: 373249  

Journal: :Environmental science & technology 2008
Falk Harnisch Uwe Schröder Fritz Scholz

A proton exchange (Nafion-117), a cation exchange (Ultrex CMI7000), an anion exchange (Fumasep FAD), and a bipolar (FumasepFBM) membrane have been studied to evaluate the principle suitability of ion exchange membranes as separators between the anode and the cathode compartment of biological fuel cells. The applicability of these membranes is severely affected by the neutral pH, and the usually...

A.R. Hamidi E. Salehi S. Ansari S.M. Hosseini, Seyed Siavash Madaeni

In this research, polyvinylchloride based composite heterogeneous cation exchange membranes were prepared by the solution casting technique. Chitosan-co-iron nickel oxide nanoparticles were utilized as membrane surface modifier to improve the membranes electrochemical properties. The effect of additive nanoparticle concentration in the modifier solution on the properties of composite membranes ...

2007
J. Parrondo F. Mijangos

Polymeric cation exchange membranes (PEMFC) are used in fuel cell technology. These membranes act as a physical barrier between anode and cathode, but diffusion through the membrane should allow protons to be carried from anode to cathode at a rate sufficient to supply energy requirements. They avoid any direct reaction of oxygen and hydrogen that would diminish fuel cell efficiency. Membranes ...

Journal: :Journal of Membrane Science 2023

In ion-exchange membranes (IEMs), the concentration-induced tradeoff between conductivity and permselectivity constrains process performance. This study investigates impacts of different electrolytes on conductivity-permselectivity commercial cation anion exchange membranes. Nine electrolyte solutions containing mono-, di-, trivalent ions, spanning 1.5 orders magnitude in concentration were exa...

Journal: :journal of membrane science and research 0
s.m. hosseini department of chemical engineering, faculty of engineering, arak university, arak 38156-8-8349, iran e. salehi department of chemical engineering, faculty of engineering, arak university, arak 38156-8-8349, iran a.r. hamidi department of chemical engineering, faculty of engineering, arak university, arak 38156-8-8349, iran s. ansari department of chemical engineering, faculty of engineering, arak university, arak 38156-8-8349, iran seyed siavash madaeni membrane research centre, department of chemical engineering, faculty of engineering, razi university, kermanshah 67149, iran

in this research, polyvinylchloride based composite heterogeneous cation exchange membranes were prepared by the solution casting technique. chitosan-co-iron nickel oxide nanoparticles were utilized as membrane surface modifier to improve the membranes electrochemical properties. the effect of additive nanoparticle concentration in the modifier solution on the properties of composite membranes ...

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