土壤重金属污染修复中功能性生物炭的定向改性

Target localization modification of functional biochar in heavy metal remediation of soil

土壤重金属污染威胁到农产品安全,功能性生物炭作为一种重要的重金属钝化剂具有良好的应用前景。文章针对功能性生物炭吸附钝化土壤重金属的五种作用机制,通过对生物炭改性方法的总结,综述了多种定向强化改性生物炭应用效果的方法,指出目前生物炭改性研究仍然存在的问题,提出未来生物炭功能强化应该综合考虑应用目标、目标重金属及土壤环境的差异性,有针对性地开展生物炭定向改性研究。

Heavy metals of soil threaten the safety of agricultural products.As an important heavy metal passivator,functional biochar has a good application prospect.Based on the five mechanisms of biochar passivate heavy metals in soil, we summarized the methods of biochar modification, with the focus on various methods of target localization strengthening to improve the application effects of biochar.The paper then proposed the functional strengthening of biochar should take the differences of target heavy metals and soil environment into consideration, and the target localization strengthening of biochar should be carried out.