A microbial electrolysis cell was established to explore the degradation characteristics of characteristic pollutants in wastewater for parabromoaniline (P-BrA). Their effects on P-BrA reduction and degradation were investigated through factors such as impressed voltage and cosubstrate type. The P-BrA residue and degradation in wastewater were analysed quantitatively through analytical testing methods, such as ultraviolet–visible, cyclic voltammetry, high-performance liquid chromatograph, and scanning electron microscopy. The results showed that under the cathode potential of 0.5 V, electrons and electroactive microorganisms generate coupling action to accelerate the degradation of P-BrA, reaching 94.94%. Moreover, the addition of carbon source organisms, such as glucose and sodium acetate, can facilitate the degradation of P-BrA in the cathode chamber on the precondition that the electroactive anaerobic microbial C/N ratio was satisfied, both reaching over 90%. In addition, the microbial community diversity and richness of bioelectrochemistry system were enhanced after bioaugmentation. The increase in the Anacrolincalcs, Betaproteobacteriales, and Micrococcales also played an important role in the granulation of bioelectrochemistry system and the removal of characteristic pollutants.

中文翻译：

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微生物电解槽阴极电位和碳源对对溴苯胺降解的影响

建立微生物电解池，探究废水中特征污染物对溴苯胺（P-BrA）的降解特性。通过外加电压和共底物类型等因素研究了它们对 P-BrA 还原和降解的影响。通过紫外可见分光光度法、循环伏安法、高效液相色谱仪、扫描电镜等分析测试方法对废水中的P-BrA残留和降解情况进行定量分析。结果表明，在0.5 V阴极电位下，电子与电活性微生物产生耦合作用，加速P-BrA的降解，降解率达到94.94%。而且，在满足电活性厌氧微生物C/N比的前提下，添加葡萄糖、乙酸钠等碳源生物可以促进阴极室中P-BrA的降解，均达到90%以上。此外，生物强化后微生物群落的多样性和生物电化学系统的丰富度得到增强。Anacrolincalcs、Betaproteobacteriales、Micrococcales的增加对生物电化学体系的颗粒化和特征污染物的去除也发挥了重要作用。