生物降解多氯联苯的研究进展

Research progress of biodegradation of polychlorinated biphenyls

介绍了生物降解多氯联苯的主要途径、研究状况及其在污染土壤修复中应用。总结了好氧氧化、厌氧还原以及厌氧和好氧过程协同作用的主要特点及应用范围,对好氧降解的菌群、氧化机理及代谢途径进行了详细的阐述。指出了目前生物法修复多氯联苯污染土壤中存在的关键问题是修复效率低,高效降解菌株的筛选、代谢动力学的研究及多种修复技术的耦合是今后生物修复研究的重点。

Biodegradation is an effective way to remove polychlorinated biphenyls(PCBs)from contaminated soils. Major ways, present situation and application of biodegradation of polychlorinated biphenyls are reviewed. Features and applied areas of aerobic oxidation, anaerobic reductive and secpiential anaerobic-aerobic biodegradation are indtroduced. Aerobic biodegradation strains, oxidation mechanism and degradation pathway are discussed. It s pointed out low efficiency of biodegradation is a major limiting factor...