生物炭修复多环芳烃污染土壤研究进展

Research development of remediation of polycyclic aromatic hydrocarbons contaminated soil by biochar

寻求一种经济高效的污染场地中PAHs降解方法是目前研究的热点和土壤生态修复领域的难点问题。生物炭具有较大的孔隙和孔隙率,可以有效吸附土壤中的PAHs,并通过影响土壤中微生物群落结构促进土壤中PAHs的降解。从生物炭的制备方法入手,重点介绍了生物炭去除污染土壤中PAHs的机理、影响因素、净化效果以及在典型污染场地中的应用,以期为PAHs污染土壤的生态修复提供参考,并进一步指出了生物炭修复PAHs污染土壤目前仍存在的问题和未来的研究方向。

The economical and efficient degradation method of PAHs for polluted soil has become a hot research topic and a difficult problem in the field of soil ecological restoration.As an excellent adsorbent,biochar has large pores and porosity,can effectively adsorb PAHs in soil,and it could promote the degradation of PAHs in soil by enrich the microbial community structure.The preparation method,mechanism,influencing factors,purification effect and application of biochar in the removal of PAHs from contaminated soil were system investigated,so as to provide a support for the ecological restoration of PAHs.