【摘要】 当前，土壤重金属污染问题已成为了备受国内外关注的环境问题之一。相比于传统单一生物炭，生物炭复合材料具有循环利用性能更佳、吸附能力更强、修复选择性更广等优点，是一种稳定的、应用前景广的土壤重金属污染修复材料。系统性地综述了目前国内外生物炭改性优化方法以及吸附重金属相关机理，讨论了生物炭应用于土壤污染修复领域存在的潜在环境风险，进一步阐述总结了目前生物炭复合材料在土壤重金属污染修复方面的应用研究及其作用机制，以期为生物炭复合材料修复土壤重金属污染的可行性提供理论依据与支持。更多还原

【Abstract】 Soil heavy metal pollution has become one of the main environmental problems attracting much attention at home and abroad. Compared with the traditional single biochar, biochar-based composites has the advantages of better recycling performance,stronger adsorption capacity and wider repair selectivity,and is a stable and promising material for remediation of heavy metal pollution in soil. This review systemically summarized the modification and optimization method of biochar at home and abroad and the mechanism of heavy metal adsorption on it. And the potential environmental risks of biochar applied to heavy metal pollution remediation in soil were discussed. Furthermore,the application and mechanism of biochar composites in remediation of soil heavy metal pollution were summarized,in order to provide theoretical basis and support for the feasibility of remediation of soil heavy metal pollution by biochar composites.更多还原