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http://dx.doi.org/10.5229/JKES.2012.15.4.256

A Study on the Separation of Cesium Cations by Using Electrochemical Ion Exchanger of KNiFe(CN)6  

Hwang, Young Gi (Department of Electrical Engineering, Kyungnam University)
Publication Information
Journal of the Korean Electrochemical Society / v.15, no.4, 2012 , pp. 256-263 More about this Journal
Abstract
This study was performed to investigate the separation of cesium cations by using an electrochemical ion exchanger of nickel hexacyanoferrate($KNiFe(CN)_6$) film electrode. Potential, current, and charge passing through the cyclic voltammograms were measured in singular and binary solutions of 1.0M $NaNO_3$ and 1.0M $CsNO_3$. Before and after each experiment, the structural morphology and atomic composition of $KNiFe(CN)_6$ were analyzed by SEM and EDS, respectively. The ion selectivity of $KNiFe(CN)_6$ was also observed by the voltammograms and atomic compositions measured in the solution alternated between sodium and cesium. As the result of this study, it was found that the electrically switched $KNiFe(CN)_6$ ion exchanger had the significant advantage of 40 times or longer durability than conventional organic or inorganic ion exchanger. It was also shown that the $KNiFe(CN)_6$ ion exchanger had high selectivity for cesium over sodium.
Keywords
Nickel hexacyanoferrate($KNiFe(CN)_6$); Electrochemical ion exchanger; Separation of cesium cations; Radioactive elements; Ion selectivity;
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Times Cited By KSCI : 1  (Citation Analysis)
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