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Concentration Polarization Phenomena in Ion-Exchange Membranes  

최재환 (공주대학교 화학공학부)
문승현 (광주과학기술원 환경공학과)
Publication Information
Membrane Journal / v.12, no.3, 2002 , pp. 143-150 More about this Journal
Abstract
Electrodialysis(ED) is a reliable and effective process for the separation and concentration of ionic compounds. However, commercial uses of ED are often hindered by the cost of the stack that mainly resulted from the ion-exchange membrane cost. In order to minimize the membrane cost, it is desired to operate ED at the highest practicable current density. In an actual ED system the high current operation is limited by the concentration polarization phenomenon. This article illustrates the transport phenomena of ions through ion exchange membranes using current-voltage relations as a characterizing method. Also recent studies on electroconvection and water-spitting phenomena caused by concentration polarization were reviewed.
Keywords
concentration polarization; ion exchange membrane; electrodialysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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