期刊
BIORESOURCE TECHNOLOGY
卷 117, 期 -, 页码 172-179出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.04.078
关键词
Anodic microbial community; Electricity generation; Low-strength domestic wastewater; Submerged-exchangeable microbial fuel cell
资金
- K-water as Development of K-water MFC Technology
- Brain Korea 21 Project
- National Research Foundation of Korea (NRF)
- Korea Government (MEST) [2010-0021578]
- National Research Foundation of Korea [2010-0021578] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A submerged type microbial fuel cell (MFC) system, which consisted of six readily exchangeable air-cathode MFCs, was evaluated for continuous treatment of low-strength domestic wastewater. When supplied with synthetic wastewater (COD 100 mg/L), the system showed increasing maximum power densities from 191 to 754 mW/m(2) as COD loading rates increased (0.20-0.40 kg/m(3)/day). COD removal efficiencies decreased with increased COD loading rates but the effluent COD concentrations met the relevant effluent quality standard (CODMn 20 mg/L) at all conditions. The system was then operated with domestic wastewater (ca. 100 mg COD/L) at 0.32 and 0.43 kg/m(3)/day. The system showed much lower power densities (116-149 mW/m(2)) at both loading rates, compared to synthetic wastewater. Anodic microbial communities were completely different when the wastewater type was changed. These results suggest that the newly developed MFC system could be applied to treat low-strength domestic wastewater without requiring any additional organic removal stage. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
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