EFFECTIVE DIFFUSIVITY IN W/O EMULSION

被引：7

作者：

TERAMOTO, M

MATSUYAMA, H

IZUMO, Y

机构：

[1] Department of Chemistry and Materials Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto

来源：

JOURNAL OF MEMBRANE SCIENCE | 1992年 / 68卷 / 1-2期

关键词：

EMULSION LIQUID MEMBRANE; FACILITATED TRANSPORT; EFFECTIVE DIFFUSIVITY; PERMEATION MODEL; ANILINE;

D O I：

10.1016/0376-7388(92)80159-H

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The rate of extraction of m-nitroaniline and m-toluidine from their aqueous solution to a W/O (water in oil) emulsion containing an aqueous HCl solution as the internal solution, and the concentration profile of the solute in the W/O emulsion phase were measured with an apparatus in which the W/O emulsion, held stationary in a cylindrical glass tube, was contacted with the aqueous feed solution at one end of the tube. Based on the observed time-course of the solute concentration in the emulsion, the effective diffusivity of the solute in the emulsion was estimated. A new model for the effective diffusivity of the solute in the emulsion was proposed by taking into account the facilitated diffusion in the internal aqueous phase. The effects of various experimental conditions on the permeation rate and the concentration profiles of the solutes in the W/O emulsion phase were quantitatively explained by the present model.

引用

页码：169 / 181

页数：13

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