Abstract
Electrosmotic water transport in MK-40, MA-40, and MA-41 electrodialysis membranes before and after their treatment by aprotic solvent solution and electroosmotic permeability of a MK-40/MA-40 membrane couple in water and N,N-dimethyl acetamide were studied for the first time. It is found that N,N-dimethyl acetamide produces practically no effect on the properties of the studied ion-exchange materials and its transport number through the MK-40/MA-40 membrane couple is independent both of the initial lithium chloride concentration in a desalting cell of the concentrator electrodyalizer and its volume fraction in the solution. The initial concentration of lithium chloride in the desalting cell does not affect the transport numbers of water in the studied membrane couple either. However, these depend on the volume fraction of the organic component in the solution and this dependence features an extremum. A method for estimation of electroosmotic permeability of the membrane couple in aqueous-organic solutions of electrolytes is suggested.
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Original Russian Text © O.A. Demina, A.V. Demin, V.I. Zabolotskii, 2012, published in Elektrokhimiya, 2012, Vol. 48, No. 11, pp. 1205–1215.
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Demina, O.A., Demin, A.V. & Zabolotskii, V.I. Electroosmotic transport of water and aprotic solvent in heterogeneous membranes. Russ J Electrochem 48, 1097–1106 (2012). https://doi.org/10.1134/S1023193512110043
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DOI: https://doi.org/10.1134/S1023193512110043