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Sorption behavior of U(VI), 234U(VI) and 238U(VI) onto fracture-filling clays in Beishan granite, Gansu: Application to
The first results of sorption experiments of U(VI), 234U(VI) and 238U(VI) onto original (unpurified) fracture-filling clays from No.1 monzonitic granite intrusion, Beishan area, Gansu Province, China are reported. The monzonitic granite intrusion is a potential location for a high-level radwaste (HLW) repository in China. The present experimental results show that the maximum U(VI) sorption reached 92% at near-neutral Ph and the distribution coefficient (Kd) was 1226 Ml/g. A high sorption capacity of the fracture-filling clays in host rock on radioactive elements is necessary for HLW deep geological disposal repository. No preferential sorption of 234U onto the clays was found. Finally, the sorption of U(VI) onto the clays was also modeled using a surface complexation model.
作 者： MIN Maozhong LUO Xingzhang WANG Ju JIN Yuanxin WANG Rucheng 作者单位： MIN Maozhong(Department of Earth Sciences, State Key Laboratory of Mineral Deposit Research, Nanjing University, Nanjing 210093, China;Center of Materials Analysis, Nanjing University, Nanjing 210093, China)LUO Xingzhang(Department of Environmental Science and Engineering, Nanjing University, Nanjing 210093, China)
WANG Ju,JIN Yuanxin(Beijing Geology Institute, Nuclear Industry, Beijing 100029, China)
WANG Rucheng(Department of Earth Sciences, State Key Laboratory of Mineral Deposit Research, Nanjing University, Nanjing 210093, China)
刊 名： 中国科学D辑（英文版） SCI 英文刊名： SCIENCE IN CHINA SERIES D (EARTH SCIENCES) 年，卷(期)： 2005 48(10) 分类号： P3 关键词： HLW geological disposal repository granite uranium radionuclide clay sorption【Sorption behavior of U(VI), 234U(VI)】相关文章：
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