The Application of Generalized Nernst-Planck Equations to the Description of Ion Retention in the Hyperfiltration of Mixed Electrolyte Solutions through a Neutral Membrane

Autor:	M. W. Vonk, J. A. M. Smit
Rok vydání:	1984
Předmět:	Chemistry General Chemical Engineering Inorganic chemistry Flux Thermodynamics Electrolyte Function (mathematics) Ion symbols.namesake Membrane symbols Nernst equation Diffusion (business) Reverse osmosis
Zdroj:	Berichte der Bunsengesellschaft für physikalische Chemie. 88:724-732
ISSN:	0005-9021
DOI:	10.1002/bbpc.19840880811
Popis:	Pseudo-binary Nernst-Planck equations have been employed to derive expressions for the ion retention in a neutral membrane as a function of the volume flux. The derivation requires an integration across the membrane. In case of a solution of two ion species this integration is exact. For solutions of three kinds of ions the desired result is only obtained along an approximative route and then still only in certain limiting cases. Nevertheless anomalies in the retention observed in systems containing three types of ions are predicted by the developed theory.
Databáze:	OpenAIRE
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