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Adsorption properties of Na-palygorskite for Cs sequestration: Effect of pH, ionic strength, humic acid and temperature
Wei, Xiaoyan1,2; Sun, Yalou1; Pan, Duoqiang1,4; Niu, Zhiwei1; Xu, Zhen1; Jiang, Yunjie1; Wu, Wangsuo1,4; Li, Zhengbin3; Zhang, Li3; Fan, Qiaohui2
2019-12-15
Source PublicationAPPLIED CLAY SCIENCE
ISSN0169-1317
Volume183Pages:8
AbstractThe 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.
KeywordCs Adsorption Palygorskite Nanotunnel
DOI10.1016/j.clay.2019.105363
Funding OrganizationNational 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
WOS KeywordAQUEOUS-SOLUTION ; MUSCOVITE ENVIRONMENT ; CLAY-MINERALS ; SORPTION ; ATTAPULGITE ; CESIUM ; REMOVAL ; EFFICIENT ; WATER ; EU(III)
Language英语
Funding ProjectNational 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]
Funding OrganizationNational 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
WOS Research AreaChemistry ; Materials Science ; Mineralogy
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Mineralogy
WOS IDWOS:000506426500042
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95896
Collection兰州油气中心
Corresponding AuthorPan, Duoqiang; Fan, Qiaohui
Affiliation1.Lanzhou Univ, Sch Nucl Sci & Technol, Radiochem Lab, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Key Lab Petr Resources, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China
3.Lanzhou Univ, Clin Med Coll 2, Lanzhou 730000, Peoples R China
4.Minist Educ, Key Lab Special Funct Mat & Struct Design, Lanzhou 730000, Peoples R China
Recommended Citation
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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