Selective Removal of Cesium Using Zirconium（IV） Tungstate as an Inorganic Ion Exchanger from Aqueous Solution

A new inorganic zirconium tungstate （ZrW） cation exchange material was synthesized and characterized. A fixed molar ratio （1：1） of Zr and W was used in the synthesis and the product was aged in the synthesis liquor for 24, 48, or 72 h. The good physicochemical properties of the products were confirm...

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Published in:材料科学与工程：中英文B版 2011, Vol.1 (6), p.736-746
Main Author: M.F. Attallah E.H. Borai Risto Hariula Airi Paajanen Mikko Karesoja Risto Koivula
Format: Article
Language:Chinese
Subjects:
放射性核素
无机离子交换剂
水溶液
离子交换材料
离子交换树脂
酸性介质
钨酸
铯
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Summary:A new inorganic zirconium tungstate （ZrW） cation exchange material was synthesized and characterized. A fixed molar ratio （1：1） of Zr and W was used in the synthesis and the product was aged in the synthesis liquor for 24, 48, or 72 h. The good physicochemical properties of the products were confirmed by infrared spectroscopy （IR）, thermogravimetric analysis （TGA）, and X-ray diffraction （XRD）. The solubility of the ion exchangers was investigated in acidic and alkaline media, and the performance in acidic medium was found to be good. Batch uptake experiments were performed on the ZrW materials to determine the ion exchange behavior and selectivity （distribution coefficients） for 134Cs, 85Sr, 57Co and 152Eu. Aging time of the exchange material was found to be an important parameter for the radionuclide uptake： cesium removal and selectivity for cesium were highest for the material aged two days. The ZrW cation exchange material is concluded to be promising for the selective removal of radioactive cesium from a
ISSN:2161-6221