Barrier effect during the electrodialysis of ampholytes

被引：46

作者：

Shaposhnik, VA ^{[1
]}

Eliseeva, TV ^{[1
]}

机构：

[1] Voronezh State Univ, Voronezh 394693, Russia

来源：

JOURNAL OF MEMBRANE SCIENCE | 1999年 / 161卷 / 1-2期

基金：

俄罗斯基础研究基金会;

关键词：

ion-exchange membrane; electrodialysis; separation; ampholyte; barrier effect; limiting current density; boundary layer;

D O I：

10.1016/S0376-7388(99)00114-3

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The dependence of amino acids fluxes through the ion-exchange membranes during electrodialysis on the current density was studied. It is found that this dependence is maximum at limiting current density. The decrease of amino acid fluxes, glycine as an example, explains the barrier effect of polarized boundary layers near the membranes in the solution of desalting compartment. The barrier effect makes it possible to effectively separate amino acids and mineral components. The role of this effect during the separation of amino acids mixtures (tyrosine-histidine) is also considered. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：223 / 228

页数：6

共 12 条

[1] ELECTROLYTIC DESALTING OF AMINO ACID SOLUTIONS WITH ELECTRONEGATIVE AND ELECTROPOSITIVE MEMBRANES, AND THE CONVERSION OF ARGININE INTO ORNITHINE [J].