Improving performance of microbial fuel cell with ultrasonication pre-treatment of mixed anaerobic inoculum sludge.
Effect of low-frequency ultrasound pre-treatment to inoculum on performance of microbial fuel cell (MFC) was evaluated. Mixed anaerobic sludge was pre-treated with ultrasonication duration of 2.5, 5, 7.5, and 15 min, and the performance of MFC using this inoculum was compared with the MFC inoculated without any pre-treatment to the sludge. The effect of combined pre-treatment, using ultrasonication and heating of the inoculum, on performance of the MFC was also evaluated. Maximum power density during polarization in a MFC inoculated with ultrasonication pre-treatment to the sludge for 5 min (40 kHz, 120 W) was 2.5 times higher than that obtained without any pre-treatment to the inoculum sludge. Substrate removal was higher in the MFC with ultrasonicated inoculum, than inoculum without any pre-treatment and combined pre-treated with ultrasonication and heating. These results evidently demonstrated the advantages of ultrasonication pre-treatment to the inoculum for enhancing power and organic matter removal of the MFC.
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Department of Civil Engineering, Indian Institute of Technology, Kharagpur 721 302, India. more.tanaji@gmail.com
Ghangrekar
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D000693:Anaerobiosis; D001674:Bioelectric Energy Sources; D008829:Microbiology; D012722:Sewage
D012722:Sewage