多溴联苯醚的微生物降解机制研究进展

Advances in microbial degradation of polybrominated diphenyl ethers (PBDEs)

摘要:

多溴联苯醚 (PBDEs) 是世界范围内广泛使用的一类溴代阻燃剂，在环境中被频繁检出。因其具有生物积累性、生物毒性和持久性等特点，如今PBDEs已成为全球分布的有机化学毒素。探究PBDEs的降解极为重要，文中从PBDEs微生物降解的角度出发，分别阐释了好氧条件和厌氧条件下细菌降解PBDEs的代谢途径研究进展，并结合原位降解研究推断古菌的降解潜能，比较分析了多种降解途径的特性和综合因素，同时对PBDEs降解微生物未来的研究趋势和PBDEs降解体系设计应用进行了展望。

Abstract:

Polybrominated diphenyl ethers (PBDEs) are widely used brominated flame-retardants in a variety of commercial products especially in the electronics and household industries. However, they are bioaccumulative, biotoxic and persistent, making them a globally distributed organic chemical toxin nowadays. Thus, it is extremely important to degrade PBDEs. This paper illustrates the research progress of metabolic pathways of PBDEs under both aerobic and anaerobic conditions, and also combines with in situ degradation studies to infer the degradation potential of archaea. The characteristics and comprehensive factors of various degradation pathways are analyzed. In addition, future researches on biodegradation mechanism of PBDEs, the design and application of PBDEs degradation system are discussed.