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http://dx.doi.org/10.4491/KSEE.2015.37.3.145

Preparation of Novel PS-zeolite Beads Immobilized Zeolite with Polysulfone for Radioactive Materials  

Lee, Chang-Han (Department of Environmental Adminstration, Catholic University of Pusan)
Park, Jeong-Min (Department of Chemical Engineering, Pukyong National University)
Kam, Sang-Kyu (Department of Environmental Engineering, Jeju National University)
Lee, Min-Gyu (Department of Chemical Engineering, Pukyong National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.37, no.3, 2015 , pp. 145-151 More about this Journal
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 $Na^+$, $K^+$, $Mg^{2+}$, and $Ca^{2+}$. 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.
Keywords
Adsorption; Zeolite; Strontium; Cesium; Polysulfone;
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Times Cited By KSCI : 2  (Citation Analysis)
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