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Hexavalent chromium reducing bacteria: mechanism of reduction and characteristics

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Abstract

As a common heavy metal, chromium and its compounds are widely used in industrial applications, e.g., leather tanning, electroplating, and in stainless steel, paints and fertilizers. Due to the strong toxicity of Cr(VI), chromium is regarded as a major source of pollution with a serious impact on the environment and biological systems. The disposal of Cr(VI) by biological treatment methods is more favorable than traditional treatment methods because the biological processes are environmentally friendly and cost-efficient. This review describes how bacteria tolerate and reduce Cr(VI) and the effects of some physical and chemical factors on the reduction of Cr(IV). The practical applications for Cr(VI) reduction of bacterial cells are also included in this review.

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Funding

This study was financially supported by the National Key Research and Development Program of China (2018YFC1802201) and Sichuan Key Research and Development Program (2017YFS0287).

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  1. College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China

    Jia Chen & Yongqiang Tian

  2. Key Laboratory of Leather Chemistry and Engineering, (Sichuan University), Ministry of Education, Chengdu, 610065, People’s Republic of China

    Jia Chen & Yongqiang Tian

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  1. Jia Chen
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YQT proposed the idea of the article, drafted an outline, and revised the work. JC performed the literature search combined with data analysis and wrote the article.

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Chen, J., Tian, Y. Hexavalent chromium reducing bacteria: mechanism of reduction and characteristics. Environ Sci Pollut Res 28, 20981–20997 (2021). https://doi.org/10.1007/s11356-021-13325-7

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