Integrating biochar and bacteria for sustainable remediation of metal-contaminated soils  

作　　者：Peng Ouyang Mathiyazhagan Narayanan Xiaojun Shi Xinping Chen Zhenlun Li Yongming Luo Ying Ma 

机构地区：[1]College of Resources and Environment,Southwest University,Chongqing 400716,China [2]Division of Research and Innovation,Department of Biotechnology,Saveetha School of Engineering,Saveetha Institute of Medical and Technical Science,Chennai 602105,Tamil Nadu,India [3]Key Laboratory of Soil Environment and Pollution Remediation,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China

出　　处：《Biochar》2023年第1期1098-1116,共19页生物炭（英文）

基　　金：College of Resources and Environment,Southwest University,supported by the Fundamental Research Funds for the Central Universities(No.SWU 020010).

摘　　要：Due to anthropogenic activities,heavy metal(HM)pollution in soils has increased,resulting in severe ecological problems and posing a constant threat to human health.Among various remediation methods,bacterial remediation is a relatively clean,efficient,and minimally negative approach.However,bacterial agents face multiple environmental stresses,making them challenging to achieve long-lasting and stable restoration effects.To address this issue,supportive organic substances such as biochar can be added to the soil with bacteria.According to bibliometric studies,integrating biochar and bacteria is extensively researched and widely used for HM-contaminated soil remediation.By integrating biochar and bacteria,heavy metals in the soil can be remediated,and soil conditions can be improved over time.Bacteria can also better promote plant growth or contribute effectively to phytoremediation processes when assisted by biochar.However,the remediation agents integrating biochar and bacteria are still some distance away from large-scale use because of their high cost and possible environmental problems.Therefore,further discussion on the interaction between biochar and bacteria and the integration approach,along with their remediation efficiency and environmental friendliness,is needed to achieve sustainable remediation of HM-contaminated soils by integrating biochar and bacteria.This paper discusses the potential mechanisms of biochar-bacteria-metal interactions,current advancements in biochar-bacteria combinations for HM-contaminated soil treatment,and their application in sustainable remediation,analyzes the interaction between biochar and bacteria and compares the remediation effect of different ways and feedstocks to integrate biochar and bacteria.Finally,future directions of biochar-bacteria combinations are presented,along with evidence and strategies for improving their commercialization and implementation.

关 键 词：BIOCHAR Heavy metals BIOREMEDIATION Plant-beneficial bacteria Soil pollution 

分 类 号：X53[环境科学与工程—环境工程]