摘要
生物炭是生物质在缺氧或是无氧条件下低温热解而成的高富碳产物,其精致的孔隙结构与较大的比表面积,丰富的表面官能团,使其对重金属离子具有较强吸附能力.近年来,生物炭修复土壤重金属污染已成为研究热点.文章对生物炭的性质、吸附重金属的作用机理、影响生物炭吸附的各个因素以及修复土壤后对重金属生物有效性等方面进行综述,最后提出生物炭未来在修复土壤重金属污染方面的研究方向.
Biological carbon is the product of pyrolysis of biomass under lack of oxygen or anaerobic conditions.Biological carbon has the fairly strong adsorption capacity of heavy metals because of its fine pore structure and huge surface area as well asabundant and various surface functional groups.Repairing heavy metal pollution by biological carbon becomes a hot spot in recent years.This article summarizes the characteristics of biological carbon,the mechanisms and influencing factors of heavy metals adsorption by biological carbon,and the effects of biological carbon on the bioavailability of heavy metals after soil restoration.Finally,it suggests the future research directions of biological carbon in soil heavy metal pollution restoration.
作者
周婷
周根娣
和苗苗
ZHOU Ting;ZHOU Gendi;HE Miaomiao(Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration,School of Life and Environmental Science,Hangzhou Normal University,Hangzhou 310036,China)
出处
《杭州师范大学学报（自然科学版）》
CAS
2018年第4期404-410,共7页
Journal of Hangzhou Normal University(Natural Science Edition)
基金
浙江省科技厅重大专项(2015C03011)
关键词
生物炭
土壤
重金属
机理
biochar
soil
heavy metal
mechanism
