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低强度超声波改善微生物燃料电池产电效能

姚璐 李正龙 刘红

姚璐, 李正龙, 刘红等 . 低强度超声波改善微生物燃料电池产电效能[J]. 北京航空航天大学学报, 2006, 32(12): 1472-1476.
引用本文: 姚璐, 李正龙, 刘红等 . 低强度超声波改善微生物燃料电池产电效能[J]. 北京航空航天大学学报, 2006, 32(12): 1472-1476.
Yao Lu, Li Zhenglong, Liu Honget al. Improve electricity generation of microbial fuel cells by low intensity ultrasound[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(12): 1472-1476. (in Chinese)
Citation: Yao Lu, Li Zhenglong, Liu Honget al. Improve electricity generation of microbial fuel cells by low intensity ultrasound[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(12): 1472-1476. (in Chinese)

低强度超声波改善微生物燃料电池产电效能

基金项目: 国家科技攻关计划资助项目(2005DFBA0005)
详细信息
  • 中图分类号: X 703.1

Improve electricity generation of microbial fuel cells by low intensity ultrasound

  • 摘要: 微生物燃料电池(MFCs,Microbial Fuel Cells)可在处理有机废水的同时获得电能,但生物体系缓慢的电子传递速率是其发展的瓶颈.为了寻求提高MFCs工作效率的途径,建立了2个有效容积为1.5L,电极面积160cm2的单室MFCs,设置为超声波强化反应器和对照反应器,进行对比试验.结果表明,采用强度为0.2W/cm2、频率33kHz、超声间隔为83h的超声波对反应器辐照10min,在反应后期(运行2880h后)MFCs与对照反应器相比最大功率密度提高了6%,一个运行周期产生的总电量增加了46.5%;设置超声的反应器库仑效率(CE,Coulombic Efficiency)比对照反应器提高了25.7%.超声波强化反应器中水的pH值最小值比对照pH值最小值低0.2,超声波辐照的反应器氧化还原电位(ORP,Oxidation Reduction Potential) 最小值低于对照反应器ORP最小值34.8mV. 2个反应器3000min对化学需氧量(COD,Chemical Oxygen Demand)的净化效率都达到72.9%,超声波对COD去除贡献不明显,并从低强度超声波对微生物作用的过程方面分析了上述现象.

     

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出版历程
  • 收稿日期:  2006-05-15
  • 网络出版日期:  2006-12-31

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