The microbial community composition and population change during bioremediation of uranium tailings. Issue 1 (January 2021)

• Record Type: Journal Article
• Authors: Chuiyun, Tang; Juan, Zhong; Ying, Lv; daozhi, Ma; Mingjiang, Zhang; Jianlei, Wang; Xingyu, Liu
• Is Part Of: IOP conference series. Volume 621:Issue 1(2020)
• Publication Date: 2021-01
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/621/1/012096
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: Uranium tailings produced in the process of uranium mining and metallurgy are an important source of uranium pollution, and pose a serious threat to the ecosystem and human health. In this study, Bacillus sp. as a functional bacterial when the uranium tailings were remediation in situ at 30°C and pH 6.5, aim to explore the response of the indigenous microbial community to environmental changes during the restoration process. The result indicted that after 14 days of remediation, the lowest uranium concentration obtained is 25.29mg/L. Next, 16s rRNA gene sequencing was used to reveal the dynamic changes of the microbial community structure during the competition process, Firmicutes and Proteobacteria are the two dominant phylm in the environment, the total highest contribution rate is 97%. Additionally, a significance present of sulfate-reducing bacteria such as Desulfotomaculum, Anaerocolumna, Burkholderia were detected in the U-treated microcosms comparison with repair initial. The results of this paper show that Bacillu sp. can be used as a functional bacteria to remediation the uranium tailings, and it is beneficial to the growth of functional microorganisms such as sulfate-reducing bacteria in the environment.