Uranium (VI) bioremediation by Acinetobacter sp. USCB2 isolated from uranium tailings area

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Li, Licheng^1 ; Zeng, Taotao^1 ; Xie, Shuibo^1,2

School of Civil Engineering, University of South China, Hengyang, China^1

Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, China^2

关键词: 16S rDNA sequence;    Acinetobacter sp;    Acinetobacters;    Biochemical tests;    Contaminated aquifer;    Protein concentrations;    South China;    Uranium removals;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/5/052043/pdf
DOI  :  10.1088/1755-1315/170/5/052043

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Bioremediation of uranium (VI)-contaminated aquifers was investigated by using bacteria isolated from a uranium tailing in South China. The bacteria were identified as Acinetobacter on the basis of physiological, biochemical tests and 16S rDNA sequence homology analysis. The protein concentration in the supernatant declined from 50.26 μ g/mL to 40.01 μ g/mL after uranium removal, and the activity of bacterial phosphatase increased from 36.04 U/L to 39.81 U/L. The FTIR, SEM-EDS and XRD demonstrated the involvement of functional groups in U (VI) binding, U accumulated on the surface of the bacteria and the precipitated is Uranyl Sulfite Hydrate. The results from this study demonstrate the potential of the U tolerant, bacterium Acinetobacter sp. USC B2 isolate might be considered as promising candidates in the design of uranium bioremediation strategies.