In this study, zeolite (Z-C2) was synthesized using a fusion/hydrothermal method on coal fly ash (FA) discharged from a thermal power plant in the Ulsan area and then analyzed via scanning electron microscopy (SEM) and X-ray diffraction (XRD). The Z-C2 was characterized in terms of mineralogical composition and morphological analysis. The XRD results showed that its peaks had the characteristics of Na-A zeolite in the range of 2θ of 7.18~34.18. The SEM images confirmed that the Na-A zeolite crystals had a chamfered-edge crystal structure almost identical to that of the commercial zeolite. The adsorption kinetics of Cu, Co, Mn and Zn ions by Z-C2 were described better by the pseudo-second-order kinetic model more than by the pseudo-first-order kinetic model. The Langmuir model fitted the adsorption isotherm data better than the Freundlich model did. The maximum adsorption capacities of Cu, Co, Mn and Zn ions obtained from the Langmuir model were in the following order : Cu (94.7 mg/g) > Co (77.7 mg/g) > Mn (57.6 mg/g) > Zn (51.1 mg/g). These adsorption capacities are regarded as excellent compared to those of commercial zeolite.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험재료
  2.2. 실험방법
 3. 결과 및 고찰
  3.1. 비산재를 이용한 제올라이트 합성
  3.2. 흡착속도 해석
  3.3. 흡착 등온 해석
 4. 결 론
 감사의 글
 REFERENCES

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