Effect of Different Operating Conditions on MFC Performance

Shan Shan Lu; Yang Guo Zhao; Ru Liu

doi:10.4028/www.scientific.net/AMR.724-725.762

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 724-725Effect of Different Operating Conditions on MFC...

Effect of Different Operating Conditions on MFC Performance

Abstract:

Dual-chamber microbial fuel cells (MFCs) were established to study the effect of seed sludge, carbon sources, buffering solution and stirring on power generation performance. Scanning electron microscope (SEM) and polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) technologies were used to investigate the spatial distribution characteristics of bacterial community. The results showed that the MFC feeding with lactic acid obtained 0.57V of electromotive force, and 1.57 W/m³ of volumetric power density. It reached 0.62V and 2.07 W/m³ when the carbon source was changed to acetic acid. Compared with anaerobic sludge, aerobic sludge had higher maximum voltage and longer high voltage duration. The stirring and the adding buffer solution improved electricity generation. SEM and DGGE profiles indicated that a large number of bacilli were tightly bound to the anode surface. Microbial community structure on the membrane surface was more similar to suspended sludge than sediment and seed sludge. In conclusion, MFCs perform better with incubating aerobic sludge, feeding acetic acid, adding PBS buffer (50mmol/L) and stirring.

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Periodical:

Advanced Materials Research (Volumes 724-725)

Pages:

762-768

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.724-725.762

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Online since:

August 2013

Authors:

Shan Shan Lu, Yang Guo Zhao, Ru Liu

Keywords:

Buffering Solution, Carbon Source, Microbial Fuel Cell (MFC), Sludge, Stirring

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