The adsorption performance of lead ion was studied using five zeolites (Na-P1, sodalite (SOD), analcime (ANA), nepheline hydrate (JBW), cancrinite (CAN)) synthesized from Jeju scoria. The adsorption performances of lead ion decreased in the order of Na-P1 > SOD > ANA > JBW > CAN. These results showed that the synthetic zeolite with a higher cationic exchange capacity showed a higher adsorption performance. The uptake of lead ion by synthetic zeolites were described by Freundlich model better than Langmuir model. The adsorption kinetics of lead ion by synthetic zeolites fitted the pseudo 2nd order kinetics better than pseudo 1st order kinetics. The effective diffusion coefficients of lead ion by synthetic zeolites were ten times higher than the zeolite A synthesized from coal fly ash.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험재료
  2.2. 실험방법
 3. 결과 및 고찰
  3.1. 합성 제올라이트의 양이온 치환용량 비교
  3.2. 합성 제올라이트의 Pb 이온 흡착평형 및 흡착능 비교
  3.3. 흡착 평형관계식
  3.4. 흡착속도식
  3.5. 유효확산계수
 4. 결 론
 참 고 문 헌

• 감상규(제주대학교 환경공학과) | Sang-Kyu Kam (Department of Environmental Engineering, Jeju National University)
• 현성수(제주특별자치도 보건환경연구원) | Sung-Su Hyun (Institute of Health & Environment, Jeju Special Self-Governing Province)
• 이민규(부경대학교 화학공학과) | Min-Gyu Lee (Department of Chemical Engineering., Pukyong National University) Corresponding Author