Efficient removal of uranium from groundwater by phosphorylated chitosan-supported nano iron composites

In this study, a new type of phosphorylated chitosan-supported nano iron (CSP/Fe 0 ) composite material. CSP/Fe 0 had a high adsorption rate (99.25%) and a maximum adsorption capacity (627.34 mg g −1 ) when the conditions were pH = 6, 308.15 K and 12 h. CSP/Fe 0 had a specific surface area of CSP/Fe...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2022-12, Vol.331 (12), p.5529-5538
Main Authors: Wen, Siqian, Wang, Hongqiang, Wang, Qingliang, Xin, Qi, Hu, Eming, Lei, Zhiwu, Hu, Fang
Format: Article
Language:English
Subjects:
Adsorption
Chemistry
Chemistry and Materials Science
Chitosan
Composite materials
Diagnostic Radiology
Groundwater treatment
Hadrons
Heavy Ions
Inorganic Chemistry
Iron
Nuclear Chemistry
Nuclear fuel cycle
Nuclear Physics
Physical Chemistry
Pore size
Surface chemistry
Uranium
Water, Underground
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Summary:In this study, a new type of phosphorylated chitosan-supported nano iron (CSP/Fe 0 ) composite material. CSP/Fe 0 had a high adsorption rate (99.25%) and a maximum adsorption capacity (627.34 mg g −1 ) when the conditions were pH = 6, 308.15 K and 12 h. CSP/Fe 0 had a specific surface area of CSP/Fe 0 was 6.02 m 2  g −1 , and has a mesoporous structure with more active sites (average pore size is 9.67 nm). The primary mechanism may be the complexation of U(VI) with abundant –OH, –NH 2 , P=O on the surface of the material and the reduction of nanoscale zero-valent iron. Therefore, it is indicated that the material has good potential in remediation of uranium-contaminated groundwater environment.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-022-08595-5