膜科学与技术

双极膜电渗析质子渗漏相关因素的分析

作者：焦扬¹，² ，杨鹏波²，丛威²

单位： 1.河西学院生命科学与工程系，甘肃张掖 734000；2.中国科学院过程工程研究所生化工程国家重点实验室，北京100190

关键词：双极膜；双极膜电渗析；电流密度；质子泄漏

出版年,卷(期):页码： 2011,31(6):64-68

摘要：

采用恒流三室双极膜电渗析方式，利用同一种阴离子交换膜和两种不同型号的双极膜对Na2SO4溶液再生H2SO4和NaOH过程中酸室H+离子渗漏进行了研究，分析了双极膜及电渗透水通量与BMED再生酸碱中酸室H+离子渗漏的相互作用。实验结果表明：在相同电流密度条件下，双极膜的膜电阻越小，酸室电渗透水的通量越大, 进而酸室质子渗漏的百分数越小。酸室H+渗漏携带的水量仅为酸室渗漏“逃水”水量的一部分。以期为BMED的工业化应用提供理论上的参考。

Study on the H2SO4 and NaOH are regenerated from Na2SO4 liquor by constant current density during bipolar membrane electrodialysis of three cell （BMED）. The process of BMED is experiment by two types of bipolar membranes (BPM) and the same anion exchange membranes, and analysed interaction which are bipolar membrane quality and water flux of acid cell with proton leakage in the regeneration process of acid. The results showed that water flux of acid cell connect with proton leakadge, and resistance of bipolar membrane impact water flux of acid cell, while the extent of proton leakage is decreased with increase of water flux of acid cell, accordingly resistance of bipolar membrane should be less，all of investigation during the same current density. Farther ,it is indicated that the losing water quantity for proton leakage is the part of gross of water leakage of acid cell. Which can give some references for industrial application of BMED.

焦扬：（1973- ），女（汉），甘肃景泰人，硕士，讲师，生物化工方向。E-mail: yangjiao2808@163. com 。 *为通讯联系人

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