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| Biochar–microbial interactions in contaminated soil remediation：a review |
| Received:December 07, 2022 |
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| KeyWord:soil remediation;biochar;microorganism;potential risk;interaction;mechanism |
| Author Name | Affiliation | E-mail | | ZHAO Shuwen | State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Beijing 100081, China
Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | | ZHANG Qianru | State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Beijing 100081, China
Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China | zhangqianru@caas.cn | | ZHANG Chuchen | State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Beijing 100081, China
Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | | JI Linyu | State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Beijing 100081, China
Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | | OK Yongsik | Korea Biochar Research Center Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Korea | |
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| Abstract: |
| In recent years, the research and application of biochars（BCs）in the remediation of contaminated soil have been a strong and widespread focus. It has been demonstrated to have remarkable impacts on the remediation of heavy metal and organic contamination in soil. BCs can improve soil properties, influence soil microbial communities, and achieve biochar mediated microbial remediation of contaminated soil. This review systematically analyzed the positive effects of BCs on microorganisms, including providing additional living environments, nutrients and improving native habitats including soil aggregates, pH, cation exchange capacity（CEC）and enzyme activity. This led to changes in microbial abundance, activity, and community structure. However, it was important not to neglect the potential risks that BCs might have on the microbial community from that toxic substances carried, such as polycyclic aromatic hydrocarbons（PAHs）and furan. Persistent free radicals（PFRs）produced by BCs during high temperature pyrolysis were also likely to be toxic to microorganisms. Moreover, the applications of biochar-mediated microbial remediation in contaminated soil were also discussed and reviewed. The review was concluded with an outlook on the direction of biochar–microbial interactions in contaminated soil remediation, which can help us to select and modify BCs and integrate them more effectively with microorganisms in line with the target applications. |
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