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

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 h...

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Bibliographic Details
Published in:World journal of microbiology & biotechnology 2021-12, Vol.37 (12), p.208, Article 208
Main Authors: Zheng, Yunting, Xiao, Chunqiao, Chi, Ruan
Format: Article
Language:English
Subjects:
Agriculture
Agrochemicals
Applied Microbiology
Biochemistry
Biodegradation, Environmental
Biomedical and Life Sciences
Biomineralization
Bioremediation
Biotechnology
Cadmium
Cadmium - chemistry
Cadmium - metabolism
Carbonates
Chemical precipitation
Environmental Engineering/Biotechnology
Environmental protection
Environmental Restoration and Remediation
Fertilizers
Humans
Immobilization
Industrial pollution
Life Sciences
Microbial Consortia
Microbiology
Microorganisms
Mineralization
Phosphates
Pollution
Pollution sources
Review
Soil - chemistry
Soil Microbiology
Soil Pollutants - analysis
Soil pollution
Soil remediation
Soils
Toxicity
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Summary: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.
ISSN:0959-3993
1573-0972
DOI:10.1007/s11274-021-03176-2