生物炭对土壤重金属形态影响的研究进展

Advances on Effects of Biochar on Soil Heavy Metal Forms

指出了作为一种新型的吸附剂,生物炭具有良好的结构基础、较大的比表面积以及吸附力,近年来成为环境、能源等领域的关注热点。通过介绍重金属在土壤中的赋存形态,概述了生物炭与土壤的相互作用,包括其在改变土壤pH值、有机质含量、阳离子交换量和氧化还原电位等方面的环境效应,分析了这些效应与土壤重金属形态有效性的关系,展望了生物炭对污染土壤修复的研究方向,以期为生物炭技术的应用和推广提供参考。

As a new type of adsorbent,biochar has a good structural basis,a larger surface area and adsorption capacity.In recent years,it has become focuses in the fields of environment and energy.In this paper,the interaction between biochar and soil was summarized by introducing the occurrence of heavy metals in the soil including its environmental effects of soil pH,organic matter content,cation exchange capacity and oxidation-reduction potential.Meanwhile,this paper analyzed the relationship between the morphology and the effectiveness of heavy metals in soils.Then,this paper proposed the future research direction of biochar on the remediation contaminated soil,which provided a reference for the popularization and application of biochar technology.