Adsorption Behavior of Cesium and Strontium on Synthetic Zeolite P.
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概要
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Adsorption behavior of Cs and Sr on a synthetic zeolite P has been studied. Natural zeolites, clinoptilolite and mordenite, were converted into the zeolite P having a high crystallinity through hydrothermal treatment with NaOH solutions. The distribution coefficient (K<SUB>d</SUB>) for Cs<SUP>+</SUP> and Sr<SUP>2+</SUP> depended on pH in acidic region, while attained nearly constant values around 10<SUP>3</SUP> cm<SUP>3</SUP>/g in neutral and alkaline regions. This value is almost the same as that for Cs<SUP>+</SUP> and about ten times that for Sr<SUP>2+</SUP> on the original clinoptilolite. The adsorption obeys Langmuir-type isotherms, and the saturated amounts of Cs and Sr were respectively estimated to be 1.76 and 1.84 mmol/g. The zeolite P containing these cations was readily converted into a stable solid form consisting of pollucite and Sr-feldspar by calcination above 1, 000°C.
- 一般社団法人 日本原子力学会の論文
著者
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Akiba Kenichi
Institute For Advanced Materials Processing Tohoku University
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Mimura Hitoshi
Institilte Of Multidisciplinary Research For Advanced Materials Tohoku University
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