Synthesis of amidoximated polyacrylonitrile/sodium alginate composite hydrogel beed and its use in selective and recyclable removal of U(VI)

In this study, a novel type of composite hydrogel bead (PSH) was prepared by mixing of amidoximated polyacrylonitrile (PAO) and sodium alginate (SA). The structure of PSH was characterized with FT-IR, SEM and XPS. The influences of adsorption conditions on uranium(VI) adsorption by PSH were investig...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2022-04, Vol.331 (4), p.1669-1682
Main Authors: Zhu, Bingyu, Li, Le, Dai, Zhongran, Tang, Shuangyang, Zhen, Deshuai, Sun, Lin, Chen, Lei, Tuo, Chen, Tang, Ziwei
Format: Article
Language:English
Subjects:
Adsorption
Analysis
Aqueous solutions
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Hydrogels
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Polyacrylonitrile
Selective adsorption
Sodium alginate
Uranium
Wastewater
X ray photoelectron spectroscopy
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Summary:In this study, a novel type of composite hydrogel bead (PSH) was prepared by mixing of amidoximated polyacrylonitrile (PAO) and sodium alginate (SA). The structure of PSH was characterized with FT-IR, SEM and XPS. The influences of adsorption conditions on uranium(VI) adsorption by PSH were investigated by batch experiments. The kinetic and isotherm data were consistent with pseudo-second-order and Langmuir models, respectively. PSH displayed high selective adsorption capacity for uranium(VI). The maximum adsorption amount can reach 133.33 mg g −1 . PSH was separated from aqueous solution easy and showed an excellent regeneration capacity. This research demonstrated that PSH had a broad prospect of application in the field of repairing uranium-containing wastewater.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-022-08233-0