不同电子受体作用下微生物降解多环芳烃研究进展

电子受体作为微生物代谢过程中的必需物质，对不同类型微生物的数量及其代谢能力有重要影响。笔者分析了不同电子受体对微生物降解多环芳烃的影响。对好氧降解（氧气为电子受体）菌种类及降解途径进行了总结；厌氧降解方面，概述了硝酸盐、硫酸盐、金属离子（Fe(Ⅲ)或Mn(Ⅳ)）、碳酸盐为电子受体的研究进展。此外，对微生物降解多环芳烃的研究存在的问题以及未来的发展方向进行了简述与展望。

Research Progress of Biodegradation of Polycyclic Aromatic Hydrocarbons with Amendment of Different Electron Acceptors

As an essential material in microbial metabolism, the electron acceptors have a very important impact on the number of microorganisms of various types and their ability to biodegrade polycyclic aromatic hydrocarbons (PAHs). The impact of different electron acceptors on the microbial degradation of PAHs was analyzed. The microorganism types and degradation approaches of aerobic biodegradation, with oxygen as electron acceptor, were summarized. In terms of anaerobic biodegradation, a review of research progress was provided for different electron acceptors such as nitrate, sulfate, Fe (Ⅲ) or Mn (Ⅳ) and carbonate. The existing problems in the research on microbial degradation of PAHs were briefed and the prospects of future development provided.