Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Removal Characteristics of Sr(II) by Solid-Phase Extractant Prepared by Immobilizing Di-(2-ethylhexyl)phosphoric acid (D2EHPA) and Tri-butyl-phosphate (TBP) in Polysulfone

Polysulfone에 Di-(2-ethylhexyl)phosphoric acid(D2EHPA)와 tri-butyl-phosphate(TBP)를 고정화하여 제조한 고체상 추출제에 의한 Sr(II)의 제거특성

  • Kam, Sang-Kyu (Department of Environmental Engineering, Jeju National University) ;
  • Jeon, Jin-Woo (Department of Chemical Engineering, Pukyong National University) ;
  • Lee, Min-Gyu (Department of Chemical Engineering, Pukyong National University)
  • Received : 2014.08.29
  • Accepted : 2014.10.15
  • Published : 2015.03.30
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Abstract

The feasibility of PS-D2EHPA/TBP beads prepared by immobilizing two extractants D2EHPA and TBP in polysulfone to remove Sr(II) from aqueous solution was investigated in batch system. Batch experiments were carried out to study equilibrium isotherms, kinetics, and thermodynamics. Equilibrium data were fitted using Langmuir, Freundlich, Redlich-Peterson, and Dubinin-Radushkevich equation models at temperatures of 298 K, 313 K, and 328 K. The removal capacity of Sr(II) by PS-D2EHPA/TBP beads obtained from Langmuir model was 2.41 mg/g at 298 K. The experimental data were well represented by pseudo-second-order model. The removal process of Sr(II) by PS-D2EHPA/TBP beads prepared in this study was found to be feasible, endothermic, and spontaneous.

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References

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