Journal of environmental and Sanitary engineering (환경위생공학)

Korean Society for Environmental Sanitary Engineers (대한환경위생공학회)
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Adsorption of Metal Ions on Cryptand Synthetic Resin

Cryptand 합성수지에 위한 금속 이온들의 흡착

  • Lee Chi-Young (Dept. of Environmental Administration, Gwangju Health College) ;
  • Kim Joon-Tae (Dept. of Environmental Administration, Gwangju Health College)
  • 이치영 (광주보건대학 환경위생과) ;
  • 김준태 (광주보건대학 환경위생과)
  • Published : 2005.12.01
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Abstract

Cryptand resins were synthesized with 1-aza-15-crown-5 macrocyclic ligand attached to styrene divinylbenzene (DVB) copolymer with crosslink of $1\%,\;2\%,\;5\%\;and\;10\%$ by substitution reaction. The synthesis of these resins was confirmed by content of chlorine, element analysis, and IR-spectrum. The effects of pH, time, dielectric constant of solvent and crosslink on adsorption of uranium$(UO_2^{2+})$ ion were investigated. The uranium 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$(UO_2^{2+})$ > zinc$(Zn^{2+})$ > samarium$(Sm^{3+})$ ion. The adsorption was in order of $1\%>2\%>5\%>10\%$ crosslink resin and adsorption of resin decreased in proportion to order of dielectric constant of solvents.

Keywords

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