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http://dx.doi.org/10.4014/jmb.1108.08033

Bioremediation of Pb-Contaminated Soil Based on Microbially Induced Calcite Precipitation  

Achal, Varenyam (State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences)
Pan, Xiangliang (State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences)
Zhang, Daoyong (Department of Chemical Engineering, National Taiwan University)
Fu, Qinglong (State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences)
Publication Information
Journal of Microbiology and Biotechnology / v.22, no.2, 2012 , pp. 244-247 More about this Journal
Abstract
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
Kocuria flava; calcite; urease; dehydrogenase; bioremediation;
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