生物炭修复有机污染土壤的研究进展

Research progresses on remediation of organic contaminated soil by biochar

生物炭作为土壤改良剂改善土壤环境、修复污染土壤已成为农业和环境保护领域的研究热点之一。介绍了生物炭的类型、特性,生物炭施用对土壤物理性质(容重、孔隙度、持水性、团聚体稳定性等)和化学性质(pH、养分、碳循环等)的影响,阐述了生物炭修复有机污染土壤的吸附机理,从生物炭理化性质、有机物性质、吸附环境三方面分析了生物炭修复效果的影响因素,探讨了生物炭对土壤中有机污染物环境行为的影响,并对目前研究存在的问题及未来重点研究方向进行了展望。

Biochar as a soil amendment to improve soil environment and remediate contaminated soil has become one of the research hotspots in the field of agriculture and environmental protection. The types and characteristics of biochar, the effects of biochar application on soil physical properties (bulk density, porosity, water holding capacity, aggregate stability, etc.) and chemical properties (pH, nutrients, carbon cycle, etc.) were introduced. The adsorption mechanism of biochar for remediation of organic contaminated soil was expounded. The biochar remediation efficiency was analyzed from three aspects, including biochar physical and chemical properties, organic biological properties and adsorption environment. The effects of biochar on the environmental behavior of organic pollutants in soil were discussed, and the existing problems and future research directions were prospected.