Scholarly Articles
Effect of gradual transition of substrate on performance of flat-panelair-cathode microbial fuel cells to treat domestic wastewater
Journals
Bioresource Technology
Author
김홍석,박영현,박성환,김종래,유재철,이태호,김병군
Publication Date
20170201
In order to confirm the effects of the low conductivity and biodegradability of wastewater, flat-panel aircathode
microbial fuel cells (FA-MFCs) were operated by supplying substrates with different volume
ratios of domestic wastewater mixed with an artificial medium: the artificial medium only, 25% wastewater,
50% wastewater, 75% wastewater, 100% of wastewater with 500 mg-COD/L by adding acetate, and
raw domestic wastewater (230 mg-COD/L). With the increase of wastewater ratio, the maximum power
density and organic removal efficiency decreased from 187 to 60 W/m3 and 51.5 to 37.4%, respectively,
but the Coulombic efficiency was maintained in the range of 18.0?18.9%. The FA-MFCs could maintain
their low internal resistances and overcome the decreasing conductivity. The acetate concentration
was more important than the total organics for power production. This study suggests that the FAMFC
configuration has great applicability for practical applications when supplied by domestic wastewater
with low conductivity and biodegradability.
microbial fuel cells (FA-MFCs) were operated by supplying substrates with different volume
ratios of domestic wastewater mixed with an artificial medium: the artificial medium only, 25% wastewater,
50% wastewater, 75% wastewater, 100% of wastewater with 500 mg-COD/L by adding acetate, and
raw domestic wastewater (230 mg-COD/L). With the increase of wastewater ratio, the maximum power
density and organic removal efficiency decreased from 187 to 60 W/m3 and 51.5 to 37.4%, respectively,
but the Coulombic efficiency was maintained in the range of 18.0?18.9%. The FA-MFCs could maintain
their low internal resistances and overcome the decreasing conductivity. The acetate concentration
was more important than the total organics for power production. This study suggests that the FAMFC
configuration has great applicability for practical applications when supplied by domestic wastewater
with low conductivity and biodegradability.