Effect of solution chemistry on the interaction of radionuclide 63Ni(II) onto montmorillonite
Effect of solution chemistry on the interaction of radionuclide 63Ni(II) onto montmorillonite
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DOI：
10.1007/s10967-015-4482-x
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发表时间：
2016-11
影响因子：
1.6
通讯作者：
Zhongshan Chen;Lei Chen;Songsheng Lu
中科院分区：
文献类型：
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作者：
Zhongshan Chen;Lei Chen;Songsheng Lu
研究了水溶液中~(63)Ni~(2+)在蒙脱土上的吸附随实验条件的变化，结果表明，在低pH时，~(63)Ni(II)的吸附主要以离子交换或外球表面络合为主，在高pH时主要以内球表面络合或表面(CO)沉淀为主。不同阳离子的存在对~(63)Ni(II)的吸附有不同的影响，而不同阴离子的存在对~(63)Ni(II)的吸附影响不大。热力学参数表明，63Ni(II)在蒙脱石上的吸附是吸热自发过程。
Sorption of63Ni(II) from aqueous solution to montmorillonite as a function of experimental conditions was studied, and the results indicated that the sorption of63Ni(II) was mainly dominated by ion exchange or outer-sphere surface complexation at low pH, and by inner-sphere surface complexation or surface (co)precipitation at high pH. The presence of different cations had different influences on63Ni(II) sorption, whereas the presence of different anions had no drastic influences on63Ni(II) sorption. The thermodynamic parameters indicated that the sorption of63Ni(II) on the montmorillonite was an endothermic and spontaneous process.