Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 27, Issue 35, Pages 44306-44313Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-020-10364-4
Keywords
Anabaena flos-aquae; Uranium; Biosorption; Thermodynamic; Isotherm
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Funding
- Natural Science Foundation of Jiangxi Province [20192BAB214005, 20181BAB214005]
- National Natural Science Foundation of China [41867063]
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Anabaena flos-aquae, a typical species of cyanobacterial bloom, was employed as a useful biosorbent for uranium removal. Batch experiments were conducted to examine the effects of different parameters on the uranium uptake amount ofAnabaena flos-aquae. The maximum adsorption capacity of 196.4 mg/g was obtained under the optimized experimental conditions. The calculations of kinetic and thermodynamic results proved the adsorption process was endothermic, chemisorption, and spontaneous. The adsorption of uranium ontoAnabaena flos-aquaewas better defined by the Langmuir model, which indicated the process was a monolayer sorption. In addition, the characterization of the biosorbent before and after uranium sorption implied that the dominant functional groups participated in the uranium adsorption process were hydroxyl, amino, and carboxyl. In conclusion, the environmentally friendly and biocompatible characteristics ofAnabaena flos-aquaesuggest that it can be a promising biosorbent for uranium removal.
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