硝酸盐还原促进毒害性有机污染物降解的研究进展

Perspectives on the nitrate reduction coupling biodegradation of toxic organic contaminants

摘要:

大量具有高毒性、持久性和生物蓄积性的有机污染物被排放到环境中，对生态环境和人类健康造成了严重威胁。近年来，利用硝酸盐作电子受体在厌氧条件下降解毒害性有机污染物，已取得一定的进展。本文综述了硝酸盐还原体系中几种典型毒害性有机污染物(多环芳烃、单环或杂环芳烃类有机物及卤代有机物)的厌氧降解研究进展。在此基础上，提出了硝酸盐还原促进毒害性有机污染物降解研究中存在的主要问题及其在加速污染环境净化方面的应用前景。

关键词:毒害性有机污染物，硝酸盐还原，微生物降解

Abstract:

Toxic organic contaminants are widely released into environment, which cause adverse impact on human health and environment due to their high biotoxicant, persistence and bioaccumulation. Recently, it has achieved some research progresses on the use of nitrate as an electron acceptor for the degradation of toxic organic pollutants under anaerobic conditions. In this paper, we reviewed the recent progresses on the anaerobic degradation of some typical toxic organic contaminants (polycyclic aromatic hydrocarbons, single ring or heterocyclic organic pollutants and halogenated organics) under nitrate-reducing conditions. In addition, the next challenges, as well as the new perspectives on this field were also discussed.

Key words:Toxic organic contaminants, Nitrate reduction, Microbial degradation