循环伏安扫描对微生物燃料电池启动和产电性能的影响

发布时间：2018-04-26 18:46

本文选题：微生物燃料电池 + 循环伏安扫描　；参考：《化工学报》2017年03期

【摘要】：微生物燃料电池(MFCs)的启动及产电性能直接影响其应用于对实际废水的处理。以屠宰厂废水为基质研究了循环伏安扫描对单室空气阴极微生物燃料电池启动和产电性能的影响。结果表明:经过24 h CV扫描的MFCs其启动时间比常规电阻(1000?)直接启动的MFCs缩短了71.4%(从420 h缩短至120 h),MFCs最大功率密度提高了21.5%,达到37.8 W·m~(-3)。通过电极生物量测定和生物膜表面形貌观察发现,经CV扫描的阳极生物量显著提高且生物膜的产电菌占优势是MFCs性能提高的主要原因。说明CV扫描不断促进产电菌在阳极表面的吸附,而且增加产电微生物的生长速度。这一技术为发展MFCs的快速启动和提升MFCs的产电性能提供了新思路。
[Abstract]:The start-up and electrical performance of microbial fuel cell (MFCs) directly affect its application in the treatment of waste water. The effect of cyclic voltammetry on the start-up and electrical performance of single chamber air cathode microbial fuel cell was studied using slaughterhouse wastewater as the substrate. The results show that the startup time of MFCs after 24 h CV scanning is higher than that of conventional resistance. The direct start-up MFCs shortened 71.4 (from 420h to 120h) and the maximum power density increased by 21.5W to 37.8 W / m ~ (-1). The results of electrode biomass measurement and biofilm surface morphology observation showed that the main reason for the improvement of MFCs performance was the significant increase of anode biomass after CV scanning and the dominance of electrogen-producing bacteria in biofilm. The results showed that CV scan promoted the adsorption of electrogen-producing bacteria on the anode surface and increased the growth rate of electroproducing microbes. This technology provides a new idea for the development of MFCs and the improvement of MFCs power production performance.
【作者单位】：浙江大学能源清洁利用国家重点实验室;杭州联合西兴食品有限公司;
【基金】：国家自然科学基金项目(51278448,51478414) 国家重点研发计划项目(2016YFB0600505)~~
【分类号】：TM911.45;X703

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