Membrane Science and Technology

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Separation of GABA from Its Potassium Salt by Bipolar Membrane Electrodialysis Method

Authors： SHEN MENG, CHEN Jin-chun*, YANG Xiao-ying

Units： College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China

KeyWords： bipolar membrane；electrodialysis；GABA

ClassificationCode：

year,volume(issue):pagination： 2012, 32(1):112-116

Abstract：

The technical feasibility of the production of GABA from its potassium salt by means of bipolar membrane electrodialysis(BMED) method is investigated. By using a three-compartment BMED, GABA and KOH from its salt can be produced. The results show that, after BMED, GABA solution and up to 2.5% KOH can be obtained. When the GABA solution is cooled down, GABA crystal can be collected. The purity of GABA can exceed 99%. And the average electric current efficiency of the process is above 60%, the electric energy consumption is approximately 2kWh per kg of GABA.

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AuthorIntro：

沈萌，男，1986年生，辽宁沈阳人，硕士生，研究方向：氨基酸的分离方法研究。

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