Effect of coexisting cations on the adsorption of cesium onto poly (β-cyclodextrin)/bentonite composite

被引：0
|
作者：
Hongjuan Liu
Shuibo Xie
Tiancheng Wang
Yingjiu Liu
Taotao Zeng
机构：
[1] University of South China,Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy
[2] University of South China,Institute of Nuclear Science and Technology
[3] University of South China,Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2017年 / 312卷
关键词：
β-CD/BNC; Bentonite; Cs; Coexistent cation; Adsorption;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A novel poly(β-cyclodextrin)/bentonite composite (β-CD/BNC) was successfully prepared through graft polymerisation by using ammonium persulphate–sodium bisulphate as initiators, and characterized by FT-IR and EDS. The equilibrium data fit Freundlich isotherm satisfactorily. Adsorption kinetic was fitted with pseudo-second-order. The maximum adsorption capacities for Cs+ by β-CD/BNC in absence and presence of Na+ and Mg2+ were 48.83 ± 0.35, 47.30 ± 0.28, and 42.52 ± 0.85 mg g−1, respectively. Adsorption of Cs+ was suppressed by presence of Mg2+ more than Na+. β-CD/BNC had a higher affinity to Cs+ than Na+ and Mg2+. β-CD/BNC was an effective sorbent for the treatment cesium waste water.
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页码：557 / 565
页数：8
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