Russian Journal of Electrochemistry

, Volume 38, Issue 8, pp 853–863 | Cite as

Experimental Verification of the Electroosmotic Mechanism of Overlimiting Conductance Through a Cation Exchange Electrodialysis Membrane

  • I. Rubinshtein
  • B. Zaltzman
  • J. Pretz
  • C. Linder
Article

Abstract

The paper is concerned with convection at an ion-exchange electrodialysis membrane induced by nonequilibrium electroosmosis as a source of overlimiting conductance current through the membrane. Derivation of nonequilibrium electroosmotic slip condition is recapitulated along with the results of linear stability analysis of quiescent electrodiffusion through a flat ion-exchange membrane. Results of numerical calculation pertaining to nonlinear convection, developing from the respective instability, are reported along with those of recent experiments with modified membranes. These latter rule in favor of electroosmotic versus bulk electroconvective origin of overlimiting conductance through ion-exchange membranes.

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Copyright information

© MAIK “Nauka/Interperiodica” 2002

Authors and Affiliations

  • I. Rubinshtein
    • 1
  • B. Zaltzman
    • 1
  • J. Pretz
    • 2
  • C. Linder
    • 2
  1. 1.Jacob Blaustein Institute for Desert ResearchBen-Gurion University of the NegevSede-Boqer CampusIsrael
  2. 2.Institutes for Applied ResearchBen-Gurion University of the NegevBeer ShevaIsrael

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