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Application of anion exchange membrane and the effect of its properties on asymmetric membrane capacitive deionization
Chang, Junjun1,2; Tang, Kexin1,3; Cao, Hongbin1; Zhao, Zhijuan1,2; Su, Chunlei1,2; Li, Yuping1; Duan, Feng1; Sheng, Yuxing1
2018-12-22
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume207Pages:387-395
Abstract

Membrane capacitive deionization (MCDI) usually contains both anion and cation exchange membranes (AEM, CEM) to restrict the ion desorption during charging and re-adsorption during discharging in capacitive deionization (CDI). In this study, different from conventional MCDI, an asymmetric membrane capacitive deionization (AMCDI) device packing an AEM only (AMCDI-AEM) was constructed, where the AEM was lab-synthesized from poly (2, 6-dimethyl-1, 4-phenylene oxide). The effect of the AEM properties, such as ion exchange capacity, water uptake and membrane resistance on the desalination performance of AMCDI-AEM was systematically discussed. The results indicate that an AEM with high ion exchange capacity, low membrane resistance and low water uptake is beneficial for AMCDI-AEM. Furthermore, AMCDI packed with a commercial cation exchange membrane only (AMCDI-CEM) and a conventional MCDI device were also assembled to stress the importance of AEM application. Although the charge efficiency of AMCDI-AEM is lower than a full MCDI cell (54.7 vs 95.0%) due to the unprotected cathode, AMCDI-AEM device shows comparable salt adsorption capacity to MCDI (7.4 vs 7.2 mg g(-1)), and is much better than that of CDI (2.3 mg g(-1)) and AMCDI-CEM (1.5 mg g(-1)), suggesting that AEM plays a stronger role than CEM for membrane-assisted CDI application. By using a single AEM and commercial activated carbon electrode, this work provides an opportunity to reduce membrane cost for the industrialization of MCDI technology.

KeywordAnion Exchange Membrane Asymmetric Membrane Capacitive Deionization Salt Adsorption Capacity Charge Efficiency Long-term Stability
DOI10.1016/j.seppur.2018.06.063
Language英语
WOS KeywordBrackish-water Desalination ; De-ionization Processes ; Long-term Stability ; Faradaic Reactions ; Electrode Material ; Carbon Electrodes ; Cation-exchange ; Fuel-cells ; Cdi ; Performance
Funding ProjectNational Key R&D Program of China[2016YFB0600505] ; National Natural Science Foundation of China (NSFC)[21377130] ; National Natural Science Foundation of China (NSFC)[51425405]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China (NSFC)
WOS IDWOS:000445987500042
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26104
Collection中国科学院过程工程研究所
Corresponding AuthorCao, Hongbin; Li, Yuping
Affiliation1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Div Environm Technol & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China
Recommended Citation
GB/T 7714
Chang, Junjun,Tang, Kexin,Cao, Hongbin,et al. Application of anion exchange membrane and the effect of its properties on asymmetric membrane capacitive deionization[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2018,207:387-395.
APA Chang, Junjun.,Tang, Kexin.,Cao, Hongbin.,Zhao, Zhijuan.,Su, Chunlei.,...&Sheng, Yuxing.(2018).Application of anion exchange membrane and the effect of its properties on asymmetric membrane capacitive deionization.SEPARATION AND PURIFICATION TECHNOLOGY,207,387-395.
MLA Chang, Junjun,et al."Application of anion exchange membrane and the effect of its properties on asymmetric membrane capacitive deionization".SEPARATION AND PURIFICATION TECHNOLOGY 207(2018):387-395.
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