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Adsorption properties of Na-palygorskite for Cs sequestration: Effect of pH, ionic strength, humic acid and temperature

文献类型：期刊论文

作者Wei, Xiaoyan1,4; Sun, Yalou4; Pan, Duoqiang3,4; Niu, Zhiwei4; Xu, Zhen4; Jiang, Yunjie4; Wu, Wangsuo3,4; Li, Zhengbin2; Zhang, Li2; Fan, Qiaohui1
刊名APPLIED CLAY SCIENCE
出版日期2019-12-15
卷号183页码:8
ISSN号0169-1317
关键词Cs Adsorption Palygorskite Nanotunnel
DOI10.1016/j.clay.2019.105363
英文摘要The sequestration of Cs on nanotunnel structured Na-palygorskite was investigated under aerobic conditions combining batch adsorption and spectroscopic approaches. The effects of pH, background electrolyte, humic acid (HA) and temperature on Cs sequestration were examined. Palygorskite showed superior sequestration performance for Cs compared with other common minerals without structural tunnels. The sequestration of Cs on palygorskite was dependent greatly on ionic strength and slightly on pH, the adsorbed Cs was hardly desorbed by deionized water but NH4Cl solution, indicating that the sequestration of Cs+ on Na-palygorskite was mainly dominated by ion exchange, and the size-matched nanotunnel structure of palygorskite played a significant role in Cs sequestration. Coexisting alkali metal ions showed great influence on Cs sequestration, and potassium with a larger size strongly competed with Cs due to the more notable steric hindrance. The addition of HA altered the path of Cs sequestration, when HA was introduced before Cs, the attachment of HA on surface inhibited Cs sequestration by blocking the access to the nanotunnels. These results are essential for understanding the environmental fate and risk of Cs and provide a basic reference for an effective sequestration remediation strategy for environmental Cs contaminants.
WOS关键词AQUEOUS-SOLUTION ; MUSCOVITE ENVIRONMENT ; CLAY-MINERALS ; SORPTION ; ATTAPULGITE ; CESIUM ; REMOVAL ; EFFICIENT ; WATER ; EU(III)
资助项目National Natural Science Foundation of China[21806063] ; National Natural Science Foundation of China[U1730245] ; National Natural Science Foundation of China[21876172] ; National Natural Science Foundation of China[41573128] ; Fundamental Research Funds for the Central Universities[lzujbky-2017-96] ; DSTI Foundation of Gansu[2018ZX-07]
WOS研究方向Chemistry ; Materials Science ; Mineralogy
语种英语
出版者ELSEVIER
WOS记录号WOS:000506426500042
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; DSTI Foundation of Gansu ; DSTI Foundation of Gansu ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; DSTI Foundation of Gansu ; DSTI Foundation of Gansu ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; DSTI Foundation of Gansu ; DSTI Foundation of Gansu ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; DSTI Foundation of Gansu ; DSTI Foundation of Gansu
源URL[http://ir.iggcas.ac.cn/handle/132A11/95896]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Pan, Duoqiang; Fan, Qiaohui
作者单位1.Chinese Acad Sci, Key Lab Petr Resources, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China
2.Lanzhou Univ, Clin Med Coll 2, Lanzhou 730000, Peoples R China
3.Minist Educ, Key Lab Special Funct Mat & Struct Design, Lanzhou 730000, Peoples R China
4.Lanzhou Univ, Sch Nucl Sci & Technol, Radiochem Lab, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Wei, Xiaoyan,Sun, Yalou,Pan, Duoqiang,et al. Adsorption properties of Na-palygorskite for Cs sequestration: Effect of pH, ionic strength, humic acid and temperature[J]. APPLIED CLAY SCIENCE,2019,183:8.
APA Wei, Xiaoyan.,Sun, Yalou.,Pan, Duoqiang.,Niu, Zhiwei.,Xu, Zhen.,...&Fan, Qiaohui.(2019).Adsorption properties of Na-palygorskite for Cs sequestration: Effect of pH, ionic strength, humic acid and temperature.APPLIED CLAY SCIENCE,183,8.
MLA Wei, Xiaoyan,et al."Adsorption properties of Na-palygorskite for Cs sequestration: Effect of pH, ionic strength, humic acid and temperature".APPLIED CLAY SCIENCE 183(2019):8.

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来源：地质与地球物理研究所

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