Abstracts of annual meeting of The Clay Science Society of Japan
Online ISSN : 2433-0582
Print ISSN : 2433-0566
ISSN-L : 2433-0566
51th annual meeting of The Clay Science Society of Japan
Session ID : A8
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Host: The Clay Science Society of Japan

Adsorption of Eu3+ to layered silicates
*Tomohiko Okada, Yusuke Ehara, Makoto Ogawa
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Abstract
Adsorption of Eu3+ to a natural montmorillonite (Kunipia F), a synthetic saponite (Sumecton SA) and Na-fluoro-tetrasilicic mica (Na-TSM) from aqueous solution was investigated. The adsorption isotherms of Eu3+ on these layered silicates indicated that the maximum adsorbed amounts were close to the cation exchange capacities. The isotherm for Na-TSM showed the strong adsorbate-adsorbent interactions. From the photoluminescence spectra of the Eu3+ adsorbed saponite and TSM, the structural difference affected the luminescence properties.
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© 2007 The Clay Science Society of Japan
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