电化学活性细菌介导环境有机污染物强化修复的机制研究

电化学活性细菌（EAB）因其独特的厌氧还原能力而在污染物修复领域受到广泛关注。本项目针对目前EAB在厌氧有机污染物修复研究中所面临的瓶颈问题，以模式菌株S. oneidensis MR-1为研究对象，探索间接利用EAB电子还原特性进行有机物污染物强化修复的机制研究。针对胞外电子能量不足的问题，将EAB和可见光催化纳米材料联用，通过提升EAB胞外电子能量以增强其对污染物的还原修复效能；针对EAB部分降解污染物的局限，采用新型EAB-过硫酸盐反应体系，将EAB作为生物活化剂触发硫酸根自由基的产生以实现污染物的厌氧氧化降解。本项目的顺利开展将能显著增强EAB对有机污染物的修复效能，扩展其在环境应用范围，具有重要的学术价值和良好的应用前景。

Electrochemically active bacteria (EAB) have received extensive attention in the field of anaerobic remediation of environmental pollutants due to their unique electronic reduction capabilities. Aiming at the current bottleneck in the application of EAB in anaerobic bioremediation, this project, using the model EAB strain S. oneidensis MR-1 as the research object, explores the indirect application of the electronic reduction properties of EAB for the enhanced remediation of organic pollutants. In view of the low extracellular-reducing capacity, EAB and visible light catalytic nanomaterials were combined to increase the energy of extracellular electrons and enhance their reductive remediation effect on pollutants; (2) For the limitation that the organic pollutants can only be partially degraded by EAB, the construction of a novel EAB-persulfate reaction system, in which EAB as a biological activator will trigger the production of sulfate radicals to achieve complete degradation of pollutants. This project will significantly enhance EAB's ability to repair organic pollutants and is helpful for the application of EAB in environmental bioremediation, which has important academic value and good application prospects.