Increased power generation from primary sludge in microbial fuel cells coupled with prefermentation

Title
Increased power generation from primary sludge in microbial fuel cells coupled with prefermentation
Author(s)
안영호최정동
Keywords
WASTE-WATER TREATMENT; CONTINUOUS ELECTRICITY-GENERATION; SEWAGE-SLUDGE; ANAEROBIC-DIGESTION; TECHNOLOGY; FERMENTATION; CONVERSION; MEMBRANE; ANODES; ACID
Issue Date
201412
Publisher
SPRINGER
Citation
BIOPROCESS AND BIOSYSTEMS ENGINEERING, v.37, no.12, pp.2549 - 2557
Abstract
Raw primary sludge and the prefermentation liquor (PL) of primary sludge were used to generate electricity in single-chambered air-cathode microbial fuel cells (MFCs). The MFCs treating the primary sludge produced 0.53 V and 370 mW/m(2) for the maximum potential and power density, respectively. In the primary sludge-fed MFCs, only 5 % of the total energy production was produced from direct electricity generation, whereas 95 % of that resulted from the conversion of methane to electricity. MFCs treating the PL generated the maximum potential of 0.58 V and maximum power density of 885 mW/m(2), respectively. In the energy production analysis, direct electricity production (1,921 Wh/kg TCODrem) in the MFCs treating the PL was much higher than that of the primary sludge-fed MFC (138 Wh/kg TCODrem). Volatile suspended solids during 10 days were reduced to 18.3 and 38 % in the primary sludge-fed MFCs and prefermentation reactor, respectively. These findings suggest that a two-stage process including prefermentation and MFCs is of great benefit on sludge reduction and higher electricity generation from primary sludge.
URI
http://hdl.handle.net/YU.REPOSITORY/30306http://dx.doi.org/10.1007/s00449-014-1232-3
ISSN
1615-7591
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공과대학 > 건설시스템공학과 > Articles
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