Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Removal Characteristics of Sr Ion by Na-A Zeolite Synthesized using Coal Fly Ash Generated from a Thermal Power Plant

화력발전소에서 발생하는 석탄비산재로부터 합성한 Na-A 제올라이트의 Sr 이온 제거 특성

  • Lee, Chang-Han (Department of Environmental Adminstration, Catholic University of Pusan) ;
  • Kam, Sang-Kyu (Department of Environmental Engineering, Jeju National University) ;
  • Lee, Min-Gyu (Department of Chemical Engineering, Pukyong National University)
  • 이창한 (부산가톨릭대학교 환경행정학과) ;
  • 감상규 (제주대학교 환경공학과) ;
  • 이민규 (부경대학교 화학공학과)
  • Received : 2016.12.19
  • Accepted : 2017.02.27
  • Published : 2017.03.31
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Abstract

This study evaluates the adsorption properties of Sr ions in an aqueous solution of the synthetic zeolite (Z-Y1) prepared using coal fly ash generated from a thermal power plant. In order to investigate the adsorption characteristics, the effects of various parameters such as the initial concentrations of Sr ion, contact time, and solution pH were investigated in a batch mode. The Langmuir and Redlich-Peterson model fitted the adsorption isotherm data better than the Freundlich model. The maximum adsorption capacity of Sr ions, as determined the Langmuir model, was 181.68 mg/g. It was found that by varying the Sr ion concentration, pH, and temperature, the pseudo-second-order kinetic model describes the adsorption kinetics of the Sr ion better than the pseudo-first-order kinetic model. The calculated thermodynamic parameters of ${\Delta}H^0$ and ${\Delta}G^0$ showed that the adsorption of Sr ions on Z-Y1 was occurred through a spontaneous and an endothermic reaction. We found that the adsorption of Sr ions by Z-Y1 was more affected by pH than by temperature and Sr ion concentration.

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References

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