Journal of East China Normal University(Natural Science) ›› 2020, Vol. 2020 ›› Issue (2): 120-130.doi: 10.3969/j.issn.1000-5641.201931003

• Chemistry and Chemical Engineering • Previous Articles     Next Articles

Preparation and application of crosslinked polyvinyl alcohol in electrosorption

CHEN Ling, MAO Shudi, ZHANG Yi, LI Zhe, PIAO Xianqing, SUN Zhuo, ZHAO Ran   

  1. School of Physics and Electronic Science, East China Normal University, Shanghai 200062, China
  • Received:2019-01-28 Published:2020-03-16

Abstract: Sulfosuccinic acid (SSA) can be used as a crosslinking agent and a donor of a hydrophilic group when fabricating a cation exchange membrane. In this study, SSA was crosslinked with polyvinyl alcohol to form a cation exchange membrane for a capacitive deionization system. In this study, the impact of manufacturing parameters (i.e., crosslinker content, crosslinking temperature) on the deionization performance of a composite membrane were investigated in detail. A comparison was made between a capacitive deionization system (CDI) without an ion exchange membrane and a membrane capacitive deionization system (MCDI) coated with a PVA/SSA layer. The results show that the adsorption capacity and charge efficiency can be enhanced by 15% and 25%, respectively, with the PVA/SSA membrane layer; furthermore, the optimal mass fraction of SSA is 5%, and the optimal crosslinking temperature is 100 ℃.

Key words: ion-exchange membrane, sulfosuccinic acid, polyvinyl alcohol composite membrane, capacitive deionization

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