Adsorption of uranium(VI) ion on the nitrogen-donor macrocyclic synthetic resin adsorbent

질소-주게 거대고리 합성수지 흡착제에 의한 우라늄(VI) 이온의 흡착

  • Kim, Joon-Tae (Experimental Analysis Team, Dong Myung Environmental Co.)
  • 김준태 (동명환경(주) 분석실험팀)
  • Received : 2008.01.30
  • Accepted : 2008.03.26
  • Published : 2008.04.25

Abstract

Resins were synthesized by mixing 1-aza-18-crown-6 macrocyclic ligand into styrene(dangerous matter) divinylbenzene(DVB) copolymer with crosslink of 1%, 2%, 6% and 12% by substitution reaction. The synthesis of these resins was confirmed by content of chlorine, elemental analysis, thermogravimetric analysis, electron microscopy, and IR. The effects of pH, time, crosslink of resins and dielectric constant of solvent on adsorption of uranium ion by resin adsorbent were investigated. Uranium ion showed a great adsorption above pH 3 and adsorption equilibrium of metal ions was established in about two hours. In addition, adsorptive selectivity of resin in ethanol solvent was $UO{_2}^{2+}$ > $Zn^{2+}$ > $Lu^{3+}$ ion and adsorption of uranium ion increased with the increase of the degree of crosslinking (1%~12%) and was inversely in proportional to the order of dielectric constant of solvents.

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