扩散渗析-电渗析回收赖氨酸离子交换废液中的盐

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魏允^1,2，王倩^1*，丛威¹

1. 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 2. 中国科学院大学生命科学学院，北京 100049

收稿日期:2018-04-16修回日期:2018-05-08出版日期:2019-10-22发布日期:2019-10-22
通讯作者:王倩

基金资助:国家自然科学基金委员会资助项目：电渗析过程中弱电解质迁移强化策略研究

The process of salt recovery from lysine ion-exchange waste water by diffusion dialysis-electrodialysis

Yun WEI^1,2, Qian WANG^1*, Wei CONG¹

1. State Key Lab of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
2. College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2018-04-16Revised:2018-05-08Online:2019-10-22Published:2019-10-22

摘要/Abstract

摘要： 为缓解电渗析膜污染，提高电渗析性能，采用阴膜扩散渗析对待脱盐的赖氨酸离子交换废液进行净化处理，对扩散渗析回收的(NH4)2SO4溶液进行电渗析脱盐浓缩。结果表明，当扩散渗析流量为5.6 L/h时，扩散渗析的扩散系数达2.24?10?7 cm2/s，离子交换废液中(NH4)2SO4透过率约为30%，可截留90.1% Mg2+和94.5%有机氮、80.3%蛋白、86.0%总糖、79.3%化学需氧量(COD)；与直接电渗析赖氨酸离子交换废液相比，对扩散渗析回收的(NH4)2SO4溶液进行电渗析脱盐浓缩，SO42?膜通量、电流效率分别提高了55.7%和18.3%，操作时间、单位膜通量能耗分别降低了26.1%和42.3%。用扩散渗析净化赖氨酸离子交换废液可有效缓解后续电渗析的膜污染，提高电渗析性能。

引用本文

魏允王倩丛威. 扩散渗析-电渗析回收赖氨酸离子交换废液中的盐[J]. 过程工程学报, 2019, 19(5): 975-981.
Yun WEI Qian WANG Wei CONG. The process of salt recovery from lysine ion-exchange waste water by diffusion dialysis-electrodialysis[J]. Chin. J. Process Eng., 2019, 19(5): 975-981.

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