【摘要】 综述了生物炭的基本特性如元素组成、比表面积和孔隙度、pH和Zeta电位、表面官能团等,并在此基础上介绍了生物炭修复重金属的机理如离子交换、静电作用、物理吸附、阳离子-π作用、络合以及沉淀作用,简述了影响生物炭修复效果的主要因素如生物炭种类及添加量、土体理化性质等。最后,对今后生物炭在土壤重金属修复工作的研究方向作出了展望。更多还原

【Abstract】 The basic characteristics of biological carbon,such as element composition,specific surface area and porosity,pH and Zeta potential and surface functional group,are reviewed.On this basis,the mechanism of biological carbon for heavy metals repair,such as ion exchange,electrostatic action,physical adsorption,cation-π,complexation and precipitation,is briefly described.The main factors influencing the restoration effect of biochar,such as biochar species,amount of addition,physical and chemical properties of soil,were introduced.At last,the future research direction of biochar in soil heavy metal restoration is prospected.更多还原