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Adsorption Characteristic of Ammonia by the Cation-Exchange Membrane  

Kim, Min (Department of Safety Environmental Energy System Engineering, Dongguk University)
Choi, Hyuk-Jun (Department of Safety Environmental Energy System Engineering, Dongguk University)
Yang, Kab-Suk (Department of Safety Environmental Energy System Engineering, Dongguk University)
Heo, Kwang-Beom (Department of Chemical and Biochemical Engineering, Dongguk University)
Kim, Byoung-Sik (Department of Chemical and Biochemical Engineering, Dongguk University)
Publication Information
Membrane Journal / v.17, no.1, 2007 , pp. 54-60 More about this Journal
Abstract
In this research, the cation-exchange membrane (SS membrane) containing sulfonic acid group was prepared by radiation induced grafted polymerization onto a porous hollow fiber membrane to effectively remove ammonia which was produced by urea decomposition for peritoneum dialysis system. And the metal ionic cross-linking cation-exchange membrane (SS-M membrane) was prepared by the adsorption of metallic ions (Cu, Ni, Zn) to the SS membranes. The pure water flux and adsorption capacities of ammonia to SS and SS-M membranes were examined. The pure water flux of SS membrane decreased rapidly with the density of $SO_3H$ group increasing. As the metallic ions were adsorbed to the SS membrane, the pure water flux was increased. The adsorption capacities of ammonia at the SS membrane increased with increasing of density of $SO_3H$ group. The ion-exchange capacity of ammonia of the SS membrane was approximately proportional 1 : 1 to the density of $SO_3H$ group. The SS membrane had higher adsorption capacities than the SS-M membrane. The highest adsorption capacities of SS and SS-M membrane appeared the highest pH 9.
Keywords
radiation induced grafted polymerization; ammonia; cation-exchange membrane; metal ionic cross-linking; adsorption;
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Times Cited By KSCI : 2  (Citation Analysis)
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