剩余污泥微生物燃料电池的产电性能及有机物降解与阳极生物分析

发布时间：2018-04-03 19:23

本文选题：微生物燃料电池　切入点：剩余污泥　出处：《环境工程学报》2017年02期

【摘要】：构建了以二沉池剩余污泥厌氧发酵上清液为阳极底物的微生物燃料电池(MFC),考察了电池的产电性能、污染物去除效率及阳极微生物种群特征。结果表明,厌氧发酵污泥MFC作为污泥资源化的一种新途径,具有可行性。在厌氧发酵的预处理条件下,MFC体系稳定运行期间输出电压最高可达0.65 V,最大功率密度达86.89 m W·m~(-2),库伦效率为(5.12±0.5)%;与此同时TCOD去除率为(50.6±3.5)%。污泥在厌氧发酵阶段产生大量挥发性脂肪酸(VFAs),它们作为产电微生物易于摄取的阳极底物,能够促进污泥中有机质的去除,进而提高污泥MFC的产电效果。由阳极微生物群落结构可推断:产电和非产电细菌具有协同作用,共同维持MFC的稳定运行。
[Abstract]:Constructed in two sedimentation tank sludge anaerobic fermentation supernatant for microbial fuel cell anode substrate (MFC), electricity production performance of battery was investigated. The removal efficiency of pollutants and the anode microbial population characteristics. The result shows that a new way of anaerobic fermentation of sludge MFC as sludge is feasible in anaerobic pretreatment conditions. Fermentation under the MFC system during the stable operation period of the output voltage up to 0.65 V, the maximum power density of 86.89 m W m~ (-2), Kulun (5.12 + 0.5) efficiency%; at the same time the removal rate of TCOD was (50.6 + 3.5)%. The sludge produced a large number of volatile fatty acid in the anaerobic fermentation stage (VFAs). As they produce microbial uptake to the anode substrate, can promote the removal of organic matter in the sludge, and improve the effect of producing electricity from the anode sludge MFC. The microbial community structure can be inferred: electricigenic and non electrogenic bacteria have synergistic It works together to maintain the stable operation of MFC.

【作者单位】：上海市环境科学研究院;同济大学环境科学与工程学院;
【基金】：上海市环保局青年基金(沪环科(2012-10) 上海市环境科学研究院青年基金(CX201404)
【分类号】：X703;TM911.45

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