双极性膜电渗析法制备γ-氨基丁酸  

Separation of GABA from its potassium salt by bipolar membrane electrodialysis method

作　　者：沈萌[1] 陈劲春[1] 杨晓英[1] 

机构地区：[1]北京化工大学生命科学与技术学院,北京100029

出　　处：《膜科学与技术》2012年第1期111-115,共5页Membrane Science and Technology

基　　金：中央级工艺性科研院所基本科研业务费专项基金项目(K-JBYWF-2009-G09)

摘　　要：通过对双极性膜电渗析转化γ-氨基丁酸(GABA)过程的研究,确定了三隔室电渗析工艺的可行性,并利用双极性膜电渗析装置,将γ-氨基丁酸钾盐转化为GABA和KOH.最终结果表明,经三隔室双极性膜电渗析转化和冷却结晶后,可以得到纯度为99%以上的γ-氨基丁酸结晶以及2.5%以上的粗氢氧化钾溶液,对于粗品γ-氨基丁酸溶液双极性膜电渗析转化过程,平均电流效率在60%以上,电耗为2kW.h/(kg GABA).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 2 kW · h per kg of GABA.

关 键 词：双极性膜 电渗析 Γ-氨基丁酸 

分 类 号：TQ464.7[化学工程—制药化工]