Extraction of Phenol and Cresol by Liquid Surfactant Membrane

Abstract
A model for the extraction of weak acids or weak bases by means of liquid surfactant membranes is presented in which external mass transfer around W/O emulsion drop, internal mass transfer inside W/O emulsion drop, both phase and chemical equilibria, and the drop size distribution of W/O emulsion are taken into account The experimental results on the batch extraction of phenol, o- and p-cresol are found to be satisfactorily simulated by the proposed model. The effect of the intensity of sonication in the preparation of W/O emulsion on the extraction rate is also presented.

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