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Erschienen in: Cellulose 13/2020

09.07.2020 | Original Research

Experimental and theoretical studies of chitosan modified titanium dioxide composites for uranium and europium removal

verfasst von: Jian Wang, Yingzhong Huo, Yuejie Ai

Erschienen in: Cellulose | Ausgabe 13/2020

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Abstract

Chitosan grafted titanium dioxide (CS/TiO2) was synthesized to remove U(VI) and Eu(III) from aqueous solutions. The experimental results demonstrated that the removal of radionuclides was dependent on pH. The simultaneous elimination of U(VI) and Eu(III) proved that the presence of Eu(III) competed with U(VI) adsorption and caused the decreased elimination of U(VI) and vice versa. The retention of U(VI) on CS/TiO2 relied on the hydroxyl groups, and the Eu(III) removal could be attributed to the amidogen groups. DFT calculation results demonstrated that the most likely adsorption site was located between the chitosan and titanium dioxide. The adsorption of radionuclides on CS/TiO2 was the combinations of various adsorption situations. This study can contribute to the simultaneous adsorption of radionuclides and provide important information for removal of other contaminants.

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Metadaten
Titel
Experimental and theoretical studies of chitosan modified titanium dioxide composites for uranium and europium removal
verfasst von
Jian Wang
Yingzhong Huo
Yuejie Ai
Publikationsdatum
09.07.2020
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 13/2020
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-020-03337-w

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