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Study on potential microbial community to the waste water treatment from bauxite desilication process

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Abstract

Discharging waste water from the bauxite desilication process will bring potential environmental risk from the residual ions and organic compounds, especially hydrolyzed polyacrylamide. Characterization of the microbial community diversity in waste water plays an important role in the biological treatment of waste water. In this study, eight waste water samples from five flotation plants in China were investigated. The microbial community and functional profiles within the waste water were analyzed by a metagenomic sequencing method and associated with geochemical properties. The results revealed that Proteobacteria and Firmicutes were the dominant bacterial phyla. Both phylogenetical and clusters of orthologous groups’ analyses indicated that Tepidicella, Paracoccus, Pseudomonas, and Exiguobacterium could be the dominant bacterial genera in the waste water from bauxite desilication process for their abilities to biodegrade complex organic compounds. The results of the microbial community diversity and functional gene compositions analyses provided a beneficial orientation for the biotreatment of waste water, as well as regenerative using of water resources. Besides, this study revealed that waste water from bauxite desilication process was an ideal ecosystem to find novel microorganisms, such as efficient strains for bio-desilication and bio-desulfurization of bauxite.

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Data availability

The datasets used and analyzed during the current study are available from the corresponding author on reasonable request.

Funding

This work was supported by the research fund of Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China (ERESEP2022Z15); the research fund of Guangxi Key Research and Development Program (AB21220057); the research fund of the Guangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin, Guangxi Normal University (grant no.: LRCSU21Z0213); and the research funds of the Scientific Research and Technology Development Program of Guangxi (Guike AD 20159040); Natural Science Foundation of Guangxi Province (2020JJA120007) and Foundation for S&T Achievements Transformation of GXNU (2019PY003).

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Contributions

All authors contributed to the study conception and design. Sampling and material preparation were performed by Qiang Huo, Ruoyang Li, and Chenquan Wang. Measurements were performed by Chunqiang Chen, Ruoyang Li, and Chenquan Wang. Investigation and funding acquisition were performed by Qiang Huo, Tengfa Long, and Xi Liu. Visualization were performed by Qiang Huo and Tengfa Long. Writing (review and editing) were performed by Qiang Huo, Ruoyang Li, and Xi Liu.

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Correspondence to Xi Liu.

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Huo, Q., Li, R., Chen, C. et al. Study on potential microbial community to the waste water treatment from bauxite desilication process. Environ Sci Pollut Res 30, 15438–15453 (2023). https://doi.org/10.1007/s11356-022-23150-1

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  • DOI: https://doi.org/10.1007/s11356-022-23150-1

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