微生物厌氧呼吸与有机污染水体沉积物修复

Microbial anaerobic respiration and remediation of aquatic sediments contaminated by refractory organic pollutants

水体沉积物有机污染是当前全球关注的重要环境问题。微生物具有呼吸和代谢多样性,能以多种污染物作为厌氧呼吸的电子供体或受体,与周围环境中的生物和非生物因素组成代谢网络耦合有机污染物降解转化,是有机污染水体沉积物修复的重要驱动者。本文重点综述了微生物厌氧呼吸、电子传递网络及其对有机污染水体沉积物的修复机制研究进展,并对有机污染水体沉积物微生物修复理论和技术研究的问题和挑战进行了探讨。

Aquatic sediment contamination by refractory organic pollutants is an urgent environmental issue in the world. Microorganism is an important driver in the remediation of contaminated aquatic sediments. Due to the flexibil- ities of microorganism in respiration and metabolism, microorganism can use a variety of contaminants as electron do- nors or aeceptors in anaerobic respiration and construct a metabolic network with the biotic and abiotic factors in its surrounding environment coupling the degradation and transformation of refractory organic pollutants. In this paper, we review recent research progress in microbial anaerobic respiration, electron transfer network, and their remediation mechanisms for aquatic sediments contaminated by refi＇actory organic pollutants. The prospects and challenges in de- veloping the theories and technologies for microbial remediation of contaminated aquatic sediments are also discussed.