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Remediation of soil cadmium pollution by biomineralization using microbial-induced precipitation: a review

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Abstract

In recent years, with industrial pollution and the application of agricultural fertilizers with high cadmium (Cd) content, soil Cd pollution has become increasingly serious. A large amount of Cd is discharged into the environment, greatly endangering the stability of the ecological environment and human health. The use of microorganisms to induce Cd precipitation and mineralization is an important bioremediation method. Itis highly efficient, has a low cost, enables environmental protection, and convenient to operate. This article summarizes the pollution status, pollution source, biological toxicity and existing forms of Cd, as well as the biomineralization mechanism of microbial induced Cd(II) precipitation, mainly including microbial-induced carbonate precipitation, microbial-induced phosphate precipitation and microbial-induced sulfide precipitation. Factors affecting the bioremediation of Cd, such as pH, coexisting ions, and temperature, are introduced. Finally, the key points and difficulties of future microbe-induced Cd(II) biomineralization research are highlighted, providing a scientific basis and theoretical guidance for the application of microbe-induced Cd(II) immobilization in soil.

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Funding

This study was funded by the National Natural Science Foundation of China (Grant No. 52174256) and the Frontier Projects of Applied Foundation of Wuhan Science and Technology Bureau (Grant No. 2019020701011498).

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Yunting Zheng wrote the main part of the manuscript and took part in the planning and conception of the review. Chunqiao Xiao planned and conceptualized the review, and was a major contributor in writing the manuscript. Ruan Chi also wrote part of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Chunqiao Xiao.

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Zheng, Y., Xiao, C. & Chi, R. Remediation of soil cadmium pollution by biomineralization using microbial-induced precipitation: a review. World J Microbiol Biotechnol 37, 208 (2021). https://doi.org/10.1007/s11274-021-03176-2

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  • DOI: https://doi.org/10.1007/s11274-021-03176-2

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