Sorption of Amino Acids by Ion Exchange Membranes

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Kenichi Kikuchi³  Joshua S. Dranoff²  Hiroshi Takahashi³  Shinji Miyata³  Takeshi Gotoh³  Takuo Sugawara¹ 

[1] Department of Geoscience, Mining Engineering and Materials Processing, Mining College, Akita University;Department of Chemical Engineering, Northwestern University;Department of Materials Engineering and Applied Chemistry, Mining College, Akita University

关键词: Ion Exchange;    Sorption;    Amino Acid;    Membrane;    Selectivity Coefficient;   

DOI  :  10.1252/jcej.27.391

来源: Maruzen Company Ltd

【 摘 要 】

References(16)Cited-By(15)The sorption equilibria of glutamic acid (Glu), methionine (Met), and lysine (Lys) on a cation-exchange membrane, SELEMION-CMV, and an anion-exchange membrane, SELEMION-AMV, have been investigated over a wide range of pH. The cation-exchange membrane showed increasing selectivity from solutions containing HCl in the order Glu, Lys, and Met, but showed only very slight sorption of Met and Glu from NaCl solutions. With anion-exchange membrane, the sorption from NaCl solution increased in the order Lys, Met, and Glu as pH increased from 8 to 11. The dependence of amino acid ionic form on pH provides a qualitative explanation of those results. A quantitative selectivity coefficient model was then determined, based on the solution and ion-exchange equilibria for each amino acid, and was found to simulate experimental results quite successfully, thereby proving that amino acids are stoichiornetrically sorbed by ion-exchange membranes.

【 授权许可】

Unknown