The adsorption characteristics of Sr and Cs ions were investigated by using PS-zeolite beads prepared by immobilizing zeolite with polysulfone (PS). The adsorption kinetics of Sr and Cs ions by PS-zeolite beads was described well by the pseudo-second-order model. The maximum adsorption capacities of Sr and Cs ions calculated from Langmuir isotherm model were 65.0 mg/g and 76.4 mg/g, respectively. In the binary system of Sr ion and Cs ion, the adsorption capacities of each ion decreased with increasing mole ratio of mixed counterpart ion, and Cs ion showed the higher hinderance than Sr ion. We found that thermodynamic properties of Sr and Cs ions on absorption reaction were spontaneous and endothermic at 293 to 323 K.

Abstract
 1. 서 론
 2. 재료 및 실험방법
  2.1. 재료
  2.2. 흡착제의 합성
  2.3. 실험 방법
 3. 결과 및 고찰
  3.1. 시간에 따른 흡착량 변화
  3.2. 속도식
  3.3. 온도의 영향
  3.4. Sr 이온과 Cs 이온의 혼합비에 따른 영향
 4. 결론
 REFERENCE

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