Ionexchange membranes preparative methods （离子交换膜的制备方法）.pdf

Available online at % bclenceulrect DESALINATION ELSEVIER Desalination 197 (2006) 225-246 flocate/desal Ion-exchange membranes preparative methods for electrodialysis and fuel cell applications M.Y. Kariduraganavar*, R.K. Nagarale, A.A. Kittur, S.S. Kulkarni Department of Chemistry and Center of Excellence in Polymer Science, Karnatak University,Dharwad-580 003,India Tel. +91 (836)2215372; Fax +91 (836)2771275, email:mahadevappak@ Received 4 September 2005; accepted 9 January 2006 Abstract Ion-exchange membranes have been used in various industrial processes, e.g., in the electrodialytic concentration of seawater to produce edible salt, as a separator for electrolysis, in the desalination of saline water by electrodialysis, in the separation of ionic materials from non-ionic materials by electrodialysis, in the recovery of acid and alkali from waste acid and alkali solution by diffusion dialysis, in the dehydration of water-miscible organic solvent by pervaporation, etc. Thus, various ion-exchange membranes have been developed according to their requirements. At the same time, various functions have been required from the ion-exchange membranes. Therefore, this review comprises various methods for the preparations of ion-exchange membranes used in electrodialysis and fuel cell applications. Keywords: Ion-exchange membranes; Electrodialysis; Inter polymer membranes; Polysulfone; 4-vinylpyridine 1. Introduction basic applications of the ion-exchange membrane