A critical review of the interactions between rhizosphere and biochar during the remediation of metal(loid)contaminated soils  

作　　者：Chuanfang Fan Yanshan Cui Qianru Zhang Naiyi Yin Xiaolin Cai Xiangzhou Yuan Sachini Senadheera Yoora Cho Yong Sik Ok 

机构地区：[1]College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 101408,China [2]Research Center for Eco-Environment Sciences,Chinese Academy of Sciences,Beijing 100085,China [3]Korea Biochar Research Center,APRU Sustainable Waste Management Program&Division of Environmental Science and Ecological Engineering,Korea University,Seoul 02841,Republic of Korea [4]State Key Laboratory of Efficient Utilization of Arid and Semi-Arid Arable Land in Northern China,Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,China [5]Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,School of Energy and Environment,Southeast University,Nanjing 210096,China

出　　处：《Biochar》2023年第1期1481-1513,共33页生物炭（英文）

基　　金：Strategic Priority Research Program of the Chinese Academy of Sciences(XDA23010000);State Scholarship Fund of China Scholarship Council(File No.202104910265);Fundamental Research Funds for the Central Universities;Cooperative Research Program for Agriculture Science and Technology Development(Project No.PJ01475801)from Rural Development Administration,the Republic of Korea;National Research Foundation of Korea(NRF)Grant funded by the Korea government(MSIT)(No.2021R1A2C2011734);Basic Science Research Program through the National Research Foundation of Korea(NRF)funded by the Ministry of Education(NRF-2021R1A6A1A10045235);International Science&Technology Innovation Program of Chinese Academy of Agriculture Science(CAAS-CFSGLCA-IEDA-202302);Young Scientist Exchange Program between the People’s Republic of China and the Republic of Korea.

摘　　要：Biochar has a large specific surface area,well-developed pore structure,abundant surface functional groups,and superior nutrient supply capacity,which is widely available and environmentally friendly with its advantages in waste resource utilization,heavy metal(loid)remediation,and carbon storage.This review focuses on the interactions between biochar(including raw biochar,functional biochar(modified/engineered/designer biochar),and composite biochar)and rhizosphere during the remediation of soil contaminated with heavy metal(loid)s(Pb,As,Cd,Hg,Co,Cu,Ni,Zn,Cr,etc.)and the effects of these interactions on the microbial communities and root exudates(enzymes and low-molecular-weight organic acids(LMWOAs)).In terms of microorganisms,biochar affects the composition,diversity,and structure of microbial communities through the supply of nutrients,provision of microbial colonization sites,immobilization of heavy metal(loid)s,and introduction of exogenous microorganisms.With regard to root exudates,biochar provides electron transfer support between the microorganisms and exudates,regulates the secretion of enzymes to resist the oxidative stress stimulated by heavy metal(loid)s,ameliorates rhizosphere acidification caused by LMWOAs,and promotes the activity of soil enzymes.The roles and mechanisms of biochar on rhizosphere soils are discussed,as well as the challenges of biochar in the remediation of heavy metal(loid)-contaminated soils,and the issues that need to be addressed in future research are foreseen.

关 键 词：Green and sustainable remediation Sustainability BIOCHAR Soil ROOT Heavy metal(loid)s 

分 类 号：X53[环境科学与工程—环境工程]