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| Bioremediation of soils polluted by polychlorinated biphenyls(PCBs) |
| Received:July 01, 2015 |
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| KeyWord:bioremediation;polychlorinated biphenyls(PCBs);soil pollution;phytoremediation;microbial remediation;vermiremediation |
| Author Name | Affiliation | E-mail | | ZHANG Xue | Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education / Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China | | | LIU Wei-tao | Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education / Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China | lwt@nankai.edu.cn;lwt405@hotmail.com | | LIANG Li-chen | Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education / Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China | | | CHEN Chen | Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education / Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China | | | HUO Xiao-hui | Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education / Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China | | | LI Song | Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education / Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China | |
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| Abstract: |
| Polychlorinated biphenyls(PCBs) are a class of persistent organic pollutants(POPs) and there are 209 PCB congeners identified as a function of chlorine numbers and position. In recent years, the pollution of PCBs in soils has aroused people's wide concern. PCBs are extremely hard to remove from soil matrix due to their high molecular stability, low solubility in water and high tendency to adsorb on particulate phase. In addition, their high hydrophobicity and lipophilicity make them susceptible to be accumulated in adipose tissue and breast milk of animals.Bioremediation is the process of converting the environmental contaminants into harmless or less toxic products by use of biological organisms(green plants, microorganisms and animals). Bioremediation, with the characteristics of low cost, high efficiency and high environmental safety, has been deemed asone of the most optimal alternative choices for traditional remediation of soil pollution. Therefore, the paper reviews the current pollution status and health effect of PCBs, the recent research progress on bioremediation of soil polluted by PCBs and relative mechanisms. Finally, the existing problems and future research directions of microbial remediation, phytoremediation and vermiremediation are discussed and prospected in the paper so as to provide useful references for bioremediation of soil contaminated by PCBs in the future. |
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