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J Korean Soc Environ Eng > Volume 37(3); 2015 > Article
J Korean Soc Environ Eng 2015;37(3): 145-151. doi: https://doi.org/10.4491/KSEE.2015.37.3.145
Polysulfone으로 제올라이트 A를 고정화한 방사성 물질제거용 PS-zeolite 비드 제조
이창한2, 박정민1, 감상규3, 이민규1
1부경대학교 화학공학과
2부산가톨릭대학교 환경행정학과
3제주대학교 환경공학과
Preparation of Novel PS-zeolite Beads Immobilized Zeolite with Polysulfone for Radioactive Materials
Chang-Han Lee2, Jeong-Min Park1, Sang-Kyu Kam3, Min-Gyu Lee1
1Department of Chemical Engineering, Pukyong National University
2Department of Environmental Adminstration, Catholic University of Pusan
3Department of Environmental Engineering, Jeju National University
Corresponding author  Min-Gyu Lee ,Tel: 051-620-1468 , Fax: 051-625-4055, Email: mglee@pknu.ac.kr
Received: January 23, 2015;  Revised: March 4, 2015;  Accepted: March 17, 2015.  Published online: March 31, 2015.
ABSTRACT
In order to remove Sr ions and Cs ions from aqueous solution, PS-zeolite beads were prepared by immobilizing zeolite with polysulfone (PS). The prepared PS-zeolite beads were characterized by SEM, XRD, FT-IR, and TGA. The optimum condition to prepare PS-zeolite beads was 1.25 g of PS content and 2 g of zeolite A. The removal efficiencies of Sr and Cs ions by the PS- zeolite beads increased as the solution pH increases and nearly reached a plateau at pH 4. The PS-zeolite beads prepared in this study showed a remarkably high selectivity for Sr ion and Cs ion under the coexistence of ions such as Na+, K+, Mg2+, and Ca2+. Zeolite particles detached from the PS-zeolite beads were not observed on this experiments, and also the PS-zeolite beads maintained the morphological structure on a SEM image. The removal efficiencies of Sr ions and Cs ions by PS-zeolite beads were maintained over 90% even after five adsorption-desorption cycles. These results implied that the prepared PS-zeolite beads could be an available adsorbent for the adsorption of Sr and Cs ions. These results suggest that the PS-zeolite can potentially be used as an adsorbent in radioactive ions removal for the treatment of industrial wastewater.
Key Words: Adsorption, Zeolite, Strontium, Cesium, Polysulfone
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