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Adsorption Characteristic of U(VI), Cu(II), Dy(III) Ions Utilizing Nitrogen-Donator Synthetic Resin  

Rho, Gi-Hwan (Dept. of Environmental Administration, Gwangju Health College)
Kim, Joon-Tae (Dept. of Environmental Administration, Gwangju Health College)
Kim, Hee-Joung (Dept. of Environmental Administration, Gwangju Health College)
Publication Information
Journal of environmental and Sanitary engineering / v.21, no.3, 2006 , pp. 52-60 More about this Journal
Abstract
The ion exchange resins have been synthesized from chlormethyl styrene-1,4-divinylbenzene(DVB) with 1%, 2%, and 20%-crosslinking and macrocyclic ligand of cryptand 21 by copolymerization method and the adsorption characteristics of uranium(VI), copper(II) and dysprosium(III) metallic ions have been investigated in various experimental conditions. The synthesis of these resins was confirmed by content of chlorine, element analysis, and IR-spectrum. The effects of pH, equilibrium time, dielectric constant of solvent and crosslink on adsorption of metallic ions were investigated. The metal ion was showed fast adsorption on the resins above pH 3. The optimum equilibrium time for adsorption of metallic ions was about two hours. The adsorption selectivity determined in ethanol was in increasing order uranium$(UO^{2+}_2)\;>\;copper(Cu^{2+})\;>\;dysprosium(Dy^{3+})$ ion. The adsorption was in order of 1%, 2%, and 20% crosslink resin and adsorption of resin decreased in proportion to order of dielectric constant of solvents.
Keywords
styrene; divinylbenzene(DVB); cryptand 21; crosslink; macrocyclic ligand;
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