Simultaneous efficient removal of oxyfluorfen with electricity generation in a microbial fuel cell and its microbial community analysis
Simultaneous efficient removal of oxyfluorfen with electricity generation in a microbial fuel cell and its microbial community analysis
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微生物燃料电池发电同时高效去除乙氧氟草醚及其微生物群落分析
DOI：
10.1016/j.biortech.2017.11.091
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发表时间：
2018
影响因子：
11.4
通讯作者：
Zhu Xiaoyu
中科院分区：
文献类型：
--
作者：
Zhang Qinghua;Zhang Lei;Wang Han;Jiang Qinrui;Zhu Xiaoyu
研究了微生物燃料电池（MFC）降解乙氧氟草醚的性能。50 mg/L乙氧氟草醚在24 h内被阳极生物膜降解约77%。温度、pH值和乙氧氟草醚初始浓度对乙氧氟草醚的降解有显著影响，当温度为31.96 °C、pH值为7.65、乙氧氟草醚初始浓度为120.05 mg/L时，理论降解率可达94.95%。乙氧氟草醚通过多种微生物代谢途径被进一步分解代谢。此外，阳极生物膜表现出多种分解代谢能力，4-硝基苯酚，氯霉素，吡唑醚菌酯，磺胺甲恶唑。微生物群落分析表明，功能菌Arcobacter、Acinetobacter、Azoecillum、Azonexus和Comamonas是阳极生物膜中的优势菌属。在有效去除各种有机物和能量回收方面，MFC似乎是一种有前途的处理环境污染物的方法。
The performance of a microbial fuel cell (MFC) to degrade oxyfluorfen was investigated. Approximately 77% of 50 mg/L oxyfluorfen was degraded within 24 h by anodic biofilm. The temperature, pH, and initial oxyfluorfen concentration had a significant effect on oxyfluorfen degrading, and a maximum degradation rate of 94.95% could theoretically be achieved at 31.96 °C, a pH of 7.65, and an initial oxyfluorfen concentration of 120.05 mg/L. Oxyfluorfen was further catabolized through various microbial metabolism pathways. Moreover, the anodic biofilm exhibited multiple catabolic capacities to 4-nitrophenol, chloramphenicol, pyraclostrobin, and sulfamethoxazole. Microbial community analysis indicated that functional bacteriaArcobacter,Acinetobacter,Azospirillum,Azonexus, andComamonaswere the predominant genera in the anodic biofilm. In terms of the efficient removal of various organic compounds and energy recovery, the MFC seemed to be a promising approach for the treatment of environmental contaminants.