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Capture of Metal Ions by Cross-linked Sulfonic Acid Type Ion Exchange Membranes  

Kim, Min (Department of Safety Environmental System Engineering, Dongguk University)
Kim, Ye-Jin (Department of Safety Environmental System Engineering, Dongguk University)
Park, Sang-Jin (Department of Chemical and Biochemical Engineering, Dongguk University)
Publication Information
Membrane Journal / v.19, no.4, 2009 , pp. 333-340 More about this Journal
Abstract
This paper is designed with the purpose of improving the efficiency of the sulfonic acid ion exchange membranes by radiation induced graft polymerization. It has been shown that the porous hollow fiber membranes could cause permeability blocking between pores and ion exchanged graft chains. Addition of crosslinker such as N-ethylene glycol dimethacrylate will permit to increase the permeation flux. In this research, the ethylene glycol dimethacrylate (EDMA) and diethylene glycol dimethacrylate (DDMA) with different length are used as crosslinkers. The ion exchanged cross-linked membrane (EDMA, DDMA) containing sulfonic acid group by radiation induced grafted polymerization are sn died for adsorb metal ions (Pb). It has been shown that adsorbed metal ions ($Pb^{2+}$) for the EDMA and DDMA membranes with the density of sulfonic acid groups, 1.40 mmol/g and 2.14 mmol/g, respectively are 13.82 mg/g, 17.37 mg/g, accordingly.
Keywords
grafted polymerization; metal; ion exchange; cross-linking; sulfonic acid; adsorption;
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Times Cited By KSCI : 7  (Citation Analysis)
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