膜电吸附中的离子迁移及其在提高吸附容量中的作用

doi:10.3969/j.issn.1004-7115.2021.02.008

betway必威登陆网址（betway.com ）学报 ›› 2021, Vol. 42 ›› Issue (2): 105-107.DOI: 10.3969/j.issn.1004-7115.2021.02.008

膜电吸附中的离子迁移及其在提高吸附容量中的作用

张雅雯, 贺建檩, 赵丽燕, 吴萌, 贾德翼, 党光耀

化学与制药工程学院,betway必威登陆网址 (betway.com ),山东泰安 271016

收稿日期:2020-09-16 发布日期:2021-09-01
通讯作者: 党光耀(1975—),男,讲师。E-mail:dyshi05388@163.com。
作者简介:张雅雯(1997—),女,betway必威登陆网址化学与制药工程学院环境工程专业2015级本科。
基金资助:
国家级大学生创新创业训练计划(201710439179)

Lon migration in membrane electrosorption and its role in increasing adsorption capacity

ZHANG Ya-wen, HE Jian-lin, ZHAO Li-yan, WU Meng, JIA De-yi, DANG Guang-yao

Chemistry and Pharmaceutical School of Shandong First Medical University, Taian 2710016, China

Received:2020-09-16 Published:2021-09-01

摘要/Abstract

摘要： 目的揭示MCDI比传统CDI具有更高SAC的真正原因。方法对比四种电吸附装置在相同操作条件下的电导率和吸附容量变化情况,分析膜电吸附的离子迁移过程。结果 MCDI的SAC为CDI的三倍;MCDI的SAC是MCDI-I的四十倍;MCDI吸附时间比其他三个实验更短。结论膜后溶液中的离子吸附是MCDI离子迁移的引发机制;待处理液离子通过接触传质进入膜后是MCDI吸附量增大的根本原因。

关键词: 膜电吸附, 离子迁移, 吸附容量

Abstract: Objective: To explore the reasons why MCDI performs better than conventional CDI in SAC. Methods: Four (M)CDI experiments were carried out, and through comparing the SAC and changes of conductivity to identify the specific ions migration path in MCDI. Results:SAC of MCDI was triple that of conventional CDI or MCDI-C; SAC of MCDI was about forty times higher than that of MCDI-I; MCDI took less time to fulfill adsorption and desorption than the other three experiments. Conclusion: Neutralization of coions behind IEMs is a key step to initiate adsorption of MCDI; ions migration from bulk solution to behind IEMs is the fundamental cause leading to the improved SAC of MCDI; the optimal SAC of MCDI should be triple that of conventional CDI.

Key words: membrane capacitive deionization, lons migration, salt adsorption capacity

中图分类号:

R914

张雅雯, 贺建檩, 赵丽燕, 吴萌, 贾德翼, 党光耀. 膜电吸附中的离子迁移及其在提高吸附容量中的作用[J]. betway必威登陆网址（betway.com ）学报, 2021, 42(2): 105-107.

ZHANG Ya-wen, HE Jian-lin, ZHAO Li-yan, WU Meng, JIA De-yi, DANG Guang-yao. Lon migration in membrane electrosorption and its role in increasing adsorption capacity[J]. Journal of Shandong First Medical Unversity & Shandong Academy of Medical Sciences, 2021, 42(2): 105-107.

膜电吸附中的离子迁移及其在提高吸附容量中的作用

Lon migration in membrane electrosorption and its role in increasing adsorption capacity

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