Zeolite material having XRD peaks of Na-A zeolite in the 2θ range of 7.18 to 34.18 can be synthesized from the waste catalyst using a fusion/hydrothermal method. The adsorption rate of Mn ions by a commercial Na-A zeolite and the synthesized zeolitic material increased as the adsorption temperature increased in the range of 10 ~ 40℃. The adsorption of Mn ion were very rapid in the first 30 min and then reached to the equilibrium state after approximately 60 min. The adsorption kinetics of Mn ions by the commercial Na-A zeolite and the zeolitic material were found to be well fitted to the pseudo-2nd order kinetic model. Equilibrium data by the commercial Na-A zeolite and the zeolitic material fit the Langmuir, Koble-Corrigan, and Redlich-Peterson isotherm models well rather than Freundlich isotherm model. The removal capacity of the Mn ions by the commercial Na-A zeolite and the zeolitic material obtained from the Langmuir model was 135.2 mg/g and 128.9 mg/g at 30℃, respectively. The adsorption capacity of Mn ions by the synthesized zeolitic material was almost similar to that of commercial Na-A zeolite. The synthesized zeolitic material could be applied as an economically feasible commercial adsorbent.

Abstract
1. 서 론
2. 재료 및 방법
    2.1. 제올라이트화 물질 합성
    2.2. 분석 방법
    2.3. 망간(Mn) 흡착
3. 결과 및 고찰
    3.1. 제올라이트 흡착제의 제조
    3.2. 망간(Mn) 흡착속도
    3.3. 망간(Mn) 등온흡착
4. 결 론
REFERENCES

• 최정학(부산가톨릭대학교 환경공학과) | Jeong-Hak Choi (Department of Environmental Engineering, Catholic University of Pusan)
• 이창한(부산가톨릭대학교 환경행정학과) | Chang-Han Lee (Department of Environmental Adminstration, Catholic University of Pusan) Corresponding author