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Preparation and uranium (VI) biosorption for tri-amidoxime modified marine fungus material.

Authors
  • Han, Jingwen1
  • Hu, Lin1
  • He, Leqing1
  • Ji, Kang1
  • Liu, Yaqing1
  • Chen, Can1
  • Luo, Xiaomei1
  • Tan, Ni2
  • 1 School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, Hunan Province, People's Republic of China. , (China)
  • 2 School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, Hunan Province, People's Republic of China. [email protected] , (China)
Type
Published Article
Journal
Environmental Science and Pollution Research
Publisher
Springer-Verlag
Publication Date
Oct 01, 2020
Volume
27
Issue
30
Pages
37313–37323
Identifiers
DOI: 10.1007/s11356-020-07746-z
PMID: 31970635
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The preparation, characterization, and uranium (VI) adsorption properties of tri-amidoxime modified marine fungus material (ZZF51-GPTS-EDA-AM/ZGEA) were investigated in this study. ZGEA was synthesized by four steps of condensation, nucleophilic substitution, electrophilic addition, and nitrile amidoxime and characterized by a series of methods containing FT-IR, TGA, SEM, and BET. Contrasted with uranium (VI) adsorption capacity of original fungus mycelium (15.46 mg g-1) that of the functional material (584.60 mg g-1) was great under the optimal factors such as uranium (VI) ion concentration 40 mg L-1, solid-liquid ratio 50 mg L-1, pH of solution 5.5, and reaction time 120 min. The above data were obtained by the orthogonal method. The cyclic tests showed that ZGEA had good regeneration performance, and it could be recycled at least five adsorption-desorption processes. The thermodynamic experimental adsorption result fitted Langmuir and Freundlich models, which explored monolayer and double layers of uranium (VI) adsorption mechanism, and the kinetic adsorption results were in better consistent with the pseudo-second-order and pseudo-first-order dynamic models (R2 > 0.999).

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