The solid phase extractant (PVC-D2EHPA bead) was prepared by immobilizing di-2-ethylhexyl-phosphoric acid (D2EHPA) with polyvinyl chloride (PVC). The prepared PVC-D2EHPA beads were characterized by using fourier transform infrared spectrometer (FTIR) and scanning electron microscopy (SEM). The removal experiments of Cu(II) by PVC-D2EHPA beads conducted batchwise. The removal kinetics of Cu(II) was found to follow the pseudo-second-order model. The equilibrium data fitted well with Langmuir isotherm model and the maximum removal capacity was 2.6 mg/g at 20℃. The optimum pH region was in the range of 3.5 to 6. and the standard free energy (△Go) was between –4.67 ∼–4.98 kJ/mol, indicating the spontaneous nature of Cu(II) removal by PVC-D2EHPA beads.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1 실험 재료
  2.2 고체상 추출제의 제조
  2.3 실험 방법
 3. 결과 및 고찰
  3.1 고체상 추출제의 특성 분석
  3.2. PVC-D2EHPA에 의한 Cu(II) 제거특성
 4. 결 론
 참고문헌

• 감상규(제주대학교 환경공학과) | Sang-Kyu Kam (Department of Environmental Engineering, Jeju National University)
• 유해나(부경대학교 화학공학과) | Hae-Na You (Department of Chemical Engineering, Pukyong National University)
• 이민규(부경대학교 화학공학과) | Min-Gyu Lee (Department of Chemical Engineering, Pukyong National University) Corresponding author
• 이동환(동의대학교 화학과) | Dong-Hwan Lee (Department of Chemistry, Dong Eui University)