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.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1 PVA-D2EHPA/TOPO 비드 제조
  2.2 실험방법
 3. 결과 및 고찰
  3.1 특성 분석
  3.2 시간에 따른 농도 변화
  3.3 속도식
  3.4 등온식
  3.5 pH의 영향
  3.6 연속식 실험
 4. 결론
 참고문헌

• 감상규(제주대학교 환경공학과) | Sang-Kyu Kam (Department of Environmental Engineering, Jeju National University)
• 박정민(부경대학교 화학공학과) | Jeong-Min Park (Department of Chemical Engineering, Pukyong National University)
• 이민규(부경대학교 화학공학과) | Min-Gyu Lee (Department of Chemical Engineering, Pukyong National University) Corresponding author