PAHs降解功能菌的识别与生物强化修复PAHs污染土壤研究进展

Research Progress on Identification of PAHs-Degrading Bacteria and Bioremediation of PAHs-Contaminated Soil

多环芳烃(PAHs)是有毒有机污染物,具有致突变、致畸和致癌性作用,广泛存在于被污染的土壤环境中,对人类健康构成了严重威胁。生物强化(BA)是一种经济有效的去除土壤中PAHs的环境修复技术,筛选和识别能够降解PAHs的功能菌是该技术研发与应用的首要任务。综述了富集培养法和稳定同位素探针(SIP)技术对PAHs降解功能微生物发掘的研究进展,分析了BA修复技术应用局限及对应策略,以期为BA技术进步与应用推广提供借鉴与参考。

Polycyclic aromatic hydrocarbons(PAHs)are toxic organic pollutants with mutagenic,teratogenic,and carcinogenic properties.They are widely distributed in soil environment and pose significant hazards to human health through constant exposure.Bioaugmentation(BA)is considered to be an environmentally-friendly and cost-effective environmental remediation technology to remove PAHs from the soil.Screening and identifying functional bacteria that can degrade PAHs is the primary task of the development and application of this technology.The research progress of enrichment culturing method and stable isotope probing(SIP)technology for the discovery of PAHs degrading functional microorganisms was reviewed and the limitations and corresponding strategies of BA remediation technology were discussed,with a view to providing a comprehensive reference for the progress and application of BA technology.