Adsorption characteristics of Eu(III) on colloidal bentonite particles in aqueous solution: impact of colloid concentration, pH, foreign ions, and temperature

被引：0
|
作者：
Zhen Xu
Zhiwei Niu
Qingfeng Tang
Xiaoyan Wei
Ximeng Chen
Duoqiang Pan
Wangsuo Wu
机构：
[1] Lanzhou University,School of Nuclear Science and Technology
[2] Ministry of Education,Key Laboratory of Special Function Materials and Structure Design
[3] Lanzhou University,Frontiers Science Center for Rare Isotopes
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2021年 / 330卷
关键词：
Bentonite colloids; Eu(III); Adsorption; Solution chemistry;
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学科分类号：
摘要：
The adsorption characteristics of Eu(III) on colloidal bentonite particles were investigated by batch experiments as functions of colloid concentration, pH, foreign ions, and temperature. Bentonite colloids displayed remarkable adsorption ability to Eu(III), the Eu(III) adsorption was significantly affected by solution chemistry. The Eu(III) adsorption increased with colloids concentration and pH increasing. Divalent cations (Ca2+, Mg2+ and Sr2+) and anions (Cl− and SO42−) inhibited Eu(III) adsorption, whereas PO43− greatly enhanced Eu(III) adsorption. High temperature was beneficial for Eu(III) adsorption, the adsorption process was a spontaneous endothermic process. The results suggested that colloids could acted as an efficient carrier for Eu(III) transport.
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页码：765 / 773
页数：8
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