EQUILIBRIUM SORPTION OF AMINO-ACIDS BY A CATION-EXCHANGE RESIN

被引：57

作者：

DYE, SR ^{[1
]}

DECARLI, JP ^{[1
]}

CARTA, G ^{[1
]}

机构：

[1] UNIV VIRGINIA,DEPT CHEM ENGN,CHARLOTTESVILLE,VA 22903

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1990年 / 29卷 / 05期

关键词：

D O I：

10.1021/ie00101a020

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The equilibrium sorption of representative amino acids by a strong-acid cation-exchange resin, Dowex 50W-X8, has been investigated. The uptake of an amino acid by the hydrogen form of the resin occurs primarily as the result of the stoichiometric exchange of amino acid cations for hydrogen ion. The solution dissociation equilibria of the amino acid and the solution composition determine the ionic fraction of amino acid cations in solution. In multicomponent systems, the uptake equilibrium is determined by the competitive interaction of the amino acid cations. A model that accounts for both solution and ion-exchange equilibria is developed to correlate binary uptake data and predict the uptake of amino acids in multicomponent systems. © 1990, American Chemical Society. All rights reserved.

引用

页码：849 / 857

页数：9

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