title: Power generation response to readily biodegradable COD in single-chamber microbial fuel cells.
abstract: Single-chamber microbial fuel cells (MFCs) using domestic wastewater (DWW) and milk processing wastewater (MWW) were operated at different organic loading rates (OLRs). The maximum power density (PDmax) and OLR (readily biodegradable COD [RBCOD] and soluble COD [SCOD]) followed the Lineweaver-Burk equation in all influents. The coefficients of determination were 0.9209 and 0.9975 for SCOD and RBCOD, respectively. OLR based on RBCOD showed better power generation function than that based on SCOD. PDmax (2.9-12.2 W/m(3)) in DWW was lower than that (6.9-24.9 W/m(3)) in MWW but the net energy recovery (kWh/kg-SCOD(removed)) in DWW (0.542-1.108) was larger than that in MWW (0.322-0.602). This was attributed to the higher ratio of RBCOD/SCOD (0.44) and the lower values of RBCOD (40 mg/L) in DWW, compared to RBOCD/SCOD (0.11) and RBCOD (110 mg/L) in MWW. Therefore, RBCOD is an important indicator for estimating power generation.
authors: MFC R&BD Center, K-water Institute, Daejeon, Republic of Korea.
authors: Hongsuck
authors: H
authors: Kim
authors: MFC R&BD Center, K-water Institute, Daejeon, Republic of Korea.
authors: Byunggoon
authors: B
authors: Kim
authors: Department of Energy Environmental Engineering, Silla University, Busan, Republic of Korea. Electronic address: yjcall@silla.ac.kr.
authors: Jaecheul
authors: J
authors: Yu
mesh_terms: D001673:Biodegradation, Environmental; D001674:Bioelectric Energy Sources / Q000382:microbiology*; D010100:Oxygen / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000382:microbiology*
chemical_list: D010100:Oxygen; D062065:Wastewater
keywords: Domestic wastewater; Energy recovery; Microbial fuel cell; Milk processing wastewater; Readily biodegradable COD