PSf/D2EHPA/CNT beads were prepared by immobilizing di-(2-ethylhexyl)-phosphoric acid (D2EHPA) and carbon nanotubes (CNT) on polysulfone (PSf) and used to remove Cu(II) from aqueous solutions. Optimum pH was in the range of 4 to 6. The removal kinetic of Cu(II) by the prepared PSf/D2EHPA/CNT beads was mainly governed by internal diffusion, and the diffusion coefficient of Cu(II) by PSf/D2EHPA/CNT beads was found to be 2.19×10-4∼2.64×10-4 cm2/s. The Langmuir isotherm model predicted the experimented data well. The maximum removal capacity of Cu(II) obtained from this isotherm was 7.32 mg/g. Calculated thermodynamic parameters such as ΔGo, ΔHo and ΔSo showed that the adsorption of Cu(II) ions onto PSf/D2EHPA/CNT beads was feasible, spontaneous and endothermic at 293–323 K.

Abstract
 1. 서 론
 2. 실험재료 및 방법
  2.1. PSf/D2EHPA/CNT 비드의 제조
  2.2. 실험 방법
 3. 실험결과
  3.1. pH의 영향
  3.2. 시간에 따른 영향
  3.3. 속도식
  3.4. 등온식
  3.5. 열역학적 해석
 4. 결 론
 감사의 글
 REFERENCES

• 이창한(부산가톨릭대학교 환경행정학과, Department of Environmental Administration, Catholic University of Pusan) | Chang-Han Lee
• 이민규(부경대학교 화학공학과, Department of Chemical Engineering, Pukyong National University) | Min-Gyu Lee Corresponding author