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ISSN : 1225-4517(Print)
ISSN : 2287-3503(Online)
Journal of Environmental Science International Vol.28 No.1 pp.55-64
DOI : https://doi.org/10.5322/JESI.2019.28.1.55

Characteristics of Cu and Cs Ions adsorbed on an immobilized Adsorbent including Zeolite Synthesized from Jeju Scoria

Chang-Han Lee,Sang-Kyu Kam1),Min-Gyu Lee2)*
Department of Environmental Adminstration, Catholic University of Pusan, Busan 46252, Korea
1)Department of Environmental Engineering, Jeju National University, Jeju 63243, Korea
2)Department of Chemical Engineering, Pukyong National University, Busan 48513, Korea
*Corresponding author: Min-Gyu Lee, Department of Chemical Engineering, Pukyong National University, Busan 48513, Korea Phone: +82-51-629-6435

Abstract

The adsorption properties of Cs+ and Cu2+ ions were evaluated by using a polysulfone scoria zeolite (PSf-SZ) composite with synthetic zeolite synthesized from Jeju volcanic rocks (scoria). In order to investigate the adsorption properties, various parameters, such as pH, contact time, reaction rate, concentration, and temperature in aqueous solutions, were evaluated by tests carried out in batch experiments. The adsorption capacities of Cs+ and Cu2+ ions increased between pH 2 but achieved equilibrium at pH 4 and above. The adsorption rate increased rapidly up to the initial 24 h, after which it plateaued ; the adsorption rate then sustained at equilibrium from 48 h. The adsorption kinetics of Cs+ and Cu2+ ions were described better by the pseudo-second-order kinetic model than the pseudo-first-order kinetic model. The Langmuir model fitted the adsorption isotherm data better than the Freundlich model. The maximum adsorption capacities of Cs+ and Cu2+ ions obtained from the Langmuir model were 53.8 mg/g and 84.7 mg/g, respectively. The calculated thermodynamic parameters showed that the adsorption of Cs+ and Cu2+ ions on PSf-SZ was feasible, spontaneous and endothermic reaction.

제주 스코리아로부터 합성한 제올라이트계 고정화 흡착제에 의한 Cu와 Cs 이온의 흡착 특성

이창한,감상규1),이민규2)*
부산가톨릭대학교 환경행정학과, 1)제주대학교 환경공학과, 2)부경대학교 화학공학과

초록

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