Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Preparation of PVA-D2EHPA/TOPO Beads by Immobilizing Extractants D2EHPA and TOPO with PVA and Removal Characteristics of Copper Ions from Aqueous Solution

추출제 D2EHPA와 TOPO를 PVA에 고정화한 PVA-D2EHPA/TOPO 비드의 제조와 수중의 구리 이온 제거 특성

  • Kam, Sang-Kyu (Department of Environmental Engineering, Jeju National University) ;
  • Park, Jeong-Min (Department of Chemical Engineering, Pukyong National University) ;
  • Lee, Min-Gyu (Department of Chemical Engineering, Pukyong National University)
  • Received : 2014.07.22
  • Accepted : 2014.09.02
  • Published : 2014.09.30
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Abstract

PVA-D2EHPA/TOPO beads containing two extractants, di-(2-ethylhexyl) phosphoric acid (D2EHPA) and trioctylphoshine oxide (TOPO) were prepared for the removal of copper ions from aqueous solution. The prepared PVA-D2EHPA/TOPO beads were characterized by SEM and FT-IR. The removal characteristics of copper ions by PVA-D2EHPA/TOPO beads was investigated using batch and continuous systems. In batch experiments, the maximum removal capacity calculated from Langmuir isotherm model was 18.6 mg/g and the optimal pH was in the range of 4.5~6. The continuous experiments showed that the removal capacity of copper ions increased with increasing inlet copper ion concentrations and bed heights, but decreased with increasing inlet flow rates.

Keywords

References

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