Zeolite (FZ) prepared using coal fly ash from an Ulsan industrial complex was immobilized with polysulfone (PS) to fabricate PS-FZ beads. The prepared PS-FZ beads were characterized by scanning electron microscopy and Fourier transform infrared spectroscopy. The optimum ratio for preparing PS-FZ beads was 1 g of PS to 2 g of FZ. The removal efficiencies of Sr and Cu ions by the PS-FZ beads increased as the solution pH increased and nearly reached a plateau at pH 4. A pseudo-second-order model morel fit the adsorption kinetics of both ions by the PS-FZ beads better than a pseudo-first-order model. The Langmuir isotherm model fit the equilibrium data well. The maximum adsorption capacities calculated from the Langmuir isotherm model were 46.73 mg/g and 62.54 mg/g for the Sr and Cu ions, respectively. Additionally, the values of thermodynamic parameters such as free energy (ΔG˚), enthalpy (ΔH˚) and entropy (ΔS˚) were determined. The results implied that the prepared PS-FZ beads could be interesting an alternative material for Sr and Cu ion removal.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 재료
  2.2. PS-FZ 흡착제 제조
  2.3. 실험 방법
 3. 결과 및 고찰
  3.1. PS-FZ 흡착체의 제조 조건
  3.2. PS-FZ의 특성 분석
  3.3. 초기 농도에 따른 흡착량
  3.4. 흡착속도모델
  3.5. 초기 pH에 따른 흡착량 변화
  3.6. 흡착등온선
  3.7. 열역학적 해석
 4. 결 론
 REFERENCES

• 감상규(제주대학교 환경공학과, Department of Environmental Engineering, Jeju National University) | Sang-Kyu Kam
• 이창한(부산가톨릭대학교 환경행정학과, Department of Environmental Administration, Catholic University of Pusan) | Chang-Han Lee
• 정갑섭(동명대학교 식품영양학과, Department of Food Science & Nutritional, Tongmyong University) | Kap-Seop Jeong
• 이민규(부경대학교 화학공학과, Department of Chemical Engineering, Pukyong National University) | Min-Gyu Lee Corresponding author