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Journal of Microbiology Biotechnology
Vol. 22, No: 2, 2012, Pages: 244-7

Bioremediation of Pb-contaminated soil based on microbially induced calcite precipitation

Achal V, Pan X, Zhang D, Fu Q

State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, People's Republic of China.


To remediate lead (Pb)-contaminated soils, it is proposed that microbially induced calcite precipitation (MICP) would provide the best alternative to other remediation technologies. In this study, Pb bioremediation in soils was investigated using the calcite-precipitating bacterium Kocuria flava. Results indicate that the Pb is primarily associated with the carbonate fraction in bioremediated soil samples. The bioavailability of Pb in contaminated soil was reduced so that the potential stress of Pb was alleviated. This research provides insight into the geochemistry occurring in the MICP-based Pb-remediated soils, which will help in remediation decisions.

Keywords:remediate lead (Pb)-contaminated soils;microbially induced calcite precipitation;calcite-precipitating bacterium Kocuria flava.



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