Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
ISSN-L : 0910-6340
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Ion Exchange Properties of Japanese Natural Zeolites in Seawater
Takaaki WAJIMA
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2013 Volume 29 Issue 1 Pages 139-141

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Abstract

Ion exchange properties of five different Japanese natural zeolites in seawater were examined. Sodium ions could be reduced by all zeolites, although anions, Cl and SO42−, in seawater showed barely changes. Natural zeolite desalination treatment mainly depends on the ion exchange between Na+, K+ and Mg2+ in seawater and Ca2+ in natural zeolite. This study found that mordenite is superior to clinoptilolite for use in Na+ reduction. Mordenite with high cation exchange capacity containing Ca2+ resulted in the highest Na+ reduction from seawater.

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© 2013 by The Japan Society for Analytical Chemistry
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