Competitive adsorption of Li, K, Rb, and Cs ions onto three ion-exchange resins

ISL OpenIR > 青海盐湖研究所知识仓储

	Competitive adsorption of Li, K, Rb, and Cs ions onto three ion-exchange resins
	Guo, Tan 1,2; Wang, Shidong1,2 ; Ye, Xiushen1 ; Liu, Haining1 ; Gao, Xiaolei 1,2; Li, Quan1 ; Guo, Min1 ; Wu, Zhijian1
	2013-05-01
发表期刊	DESALINATION AND WATER TREATMENT
卷号	51 期号:19-21 页码:3954-3959
关键词	Alkali Metal Ion Ion-exchange Resin Competitive Adsorption Separation Factor
摘要	Adsorption is one of the effective methods to recover or remove alkali metal ions from aqueous solutions. Current studies on the adsorption of alkali metal ions are mainly focused on the adsorption of one alkali metal ion. However, under natural conditions, alkali metal ions are usually coexisted. During separation processes, they compete with each other. In this study, competitive and noncompetitive adsorption of Li, K, Rb, and Cs ions onto three ion-exchange resins (D001, LSC-100, and LSC-500) of sodium form was investigated in batch experiments at 25(o)C. Compared with the noncompetitive adsorption, competitive adsorption of different alkali metal ions present with larger differences, in general. The adsorption from single and multiple solutions presents similar preference. Under both the noncompetitive and competitive adsorption conditions, for D001 resin, the separation factor was found to follow the order of beta(Cs/Li) > beta(Rb/Li) > beta(K/Li), on the contrary, for both LSC-100 and LSC-500 resins, it is beta(Cs/Li) < beta(Rb/Li) < beta(K/Li). The affinity sequence was explained by considering the hydration energy changes, the electrostatic attractions and complexation between the alkali metal ions and the resins. The results obtained would be helpful for the understanding of the competitive adsorption processes and the recovery or removal of one or more alkali metal ions from aqueous solutions.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/4428
专题	青海盐湖研究所知识仓储盐湖资源与化学实验室
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Guo, Tan,Wang, Shidong,Ye, Xiushen,et al. Competitive adsorption of Li, K, Rb, and Cs ions onto three ion-exchange resins[J]. DESALINATION AND WATER TREATMENT,2013,51(19-21):3954-3959.
APA	Guo, Tan.,Wang, Shidong.,Ye, Xiushen.,Liu, Haining.,Gao, Xiaolei.,...&Wu, Zhijian.(2013).Competitive adsorption of Li, K, Rb, and Cs ions onto three ion-exchange resins.DESALINATION AND WATER TREATMENT,51(19-21),3954-3959.
MLA	Guo, Tan,et al."Competitive adsorption of Li, K, Rb, and Cs ions onto three ion-exchange resins".DESALINATION AND WATER TREATMENT 51.19-21(2013):3954-3959.