US EPA

8781621 

Journal Article 

Removal of uranium(VI) from simulated wastewater by a novel porous membrane based on crosslinked chitosan, UiO-66-NH2 and polyvinyl alcohol 

Wang, Y; Long, J; Xu, W; Luo, H; Liu, J; Zhang, Y; Li, J; Luo, X 

2021 

Yes 

Journal of Radioanalytical and Nuclear Chemistry
ISSN: 0236-5731
EISSN: 1588-2780 

328 

1 

397-410 

English 

10.1007/s10967-021-07649-4 

WOS:000627246600004 

https://link.springer.com/10.1007/s10967-021-07649-4
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The development of highly efficient adsorbent presents an enticing prospect for U(VI)-containing radioactive wastewater treatment. In this work, a novel porous cCS/PVA/UiO-66-NH2 membrane absorbent comprising of crosslinked chitosan (cCS), polyvinyl alcohol (PVA) and UiO-66-NH2 is designed and prepared. The adsorption capacity of porous cCS/PVA/UiO-66-NH2 membrane achieves 316.50 mg g(-1) under an optimal condition. Furthermore, the porous cCS/PVA/UiO-66-NH2 membrane exhibits a high selectivity for U(VI) adsorption in simulated radioactive wastewater treatment. The possible mechanism of U(VI) adsorption onto porous cCS/PVA/UiO-66-NH2 membrane mainly includes surface complexation and cation exchange processes. In addition, the porous cCS/PVA/UiO-66-NH2 membrane also exhibits excellent cycling adsorption-desorption performance. All these results demonstrate that the porous cCS/PVA/UiO-NH2 membrane is a promising candidate for application in U(VI) removal from radioactive wastewater. 

Chitosan; UiO-66-NH2; Adsorption; Uranium(VI); METAL-ORGANIC FRAMEWORKS; FACILE PREPARATION; EFFICIENT REMOVAL; CR(VI) IONS; ADSORPTION; COMPOSITE; U(VI); MOF; URANYL