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Study on the Role of Quartz in the Bio-Oxidation of Sulfide Minerals From Mine Solid Waste

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Abstract

Sulfide-containing mine waste was oxidized to produce acid mine drainage, which lead to acidification of surrounding soil and downstream rivers and posed a threat to the surrounding environment. Quartz often coexists with sulfide minerals and affects the oxidation of sulfide minerals. In order to explore the role of quartz in the bio-oxidation of sulfide minerals in mine solid waste, the mixed minerals of quartz and sulfide minerals were bio-oxidized by Acidithiobacillus ferrooxidans. The results showed that quartz could improve the microbial activity and increase the acid production of sulfide minerals. The larger the proportion of quartz in bio-oxidation of sulfide minerals, the less the production of secondary minerals such as jarosite, and the larger the leaching amount of iron and sulfate. This research provides new ideas for speeding up the bio-oxidation of sulfide mineral to remove iron and sulfate. It provides a new way to solve acid pollution caused by oxidation of sulfide minerals.

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Acknowledgements

This work was supported by National Key Research and Development Project (Grant Nos. 2018YFC1802603) and Environmental Protection Technology Research Project of Department of Ecological Environment of Yunnan Province (Grant Nos. YNJH2019224).

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Correspondence to Xuewei Hu.

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Li, L., Tian, S., Li, Y. et al. Study on the Role of Quartz in the Bio-Oxidation of Sulfide Minerals From Mine Solid Waste. Bull Environ Contam Toxicol 107, 1103–1110 (2021). https://doi.org/10.1007/s00128-021-03313-5

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  • DOI: https://doi.org/10.1007/s00128-021-03313-5

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