WIT Press


Electro-osmotically Induced Convection At A Charge-selective Membrane

Price

Free (open access)

Paper DOI

10.2495/AFM020361

Volume

36

Pages

10

Published

2002

Size

493 kb

Author(s)

I. Rubinstein & B. Zaltzman

Abstract

The paper is concerned with convection induced by non equilibrium electroosmosis at, an ion exchange electrodialysis membrane, as a source of over limiting conductance through the membrane. Derivation of non equilibrium 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 surface versus h l ~ origin c of over limiting conductance through ion exchange membranes.

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