Increasing power generation for scaling up single-chamber air cathode microbial fuel cells
KAUST Grant NumberKUS-I1-003-13
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AbstractScaling up microbial fuel cells (MFCs) requires a better understanding the importance of the different factors such as electrode surface area and reactor geometry relative to solution conditions such as conductivity and substrate concentration. It is shown here that the substrate concentration has significant effect on anode but not cathode performance, while the solution conductivity has a significant effect on the cathode but not the anode. The cathode surface area is always important for increasing power. Doubling the cathode size can increase power by 62% with domestic wastewater, but doubling the anode size increases power by 12%. Volumetric power density was shown to be a linear function of cathode specific surface area (ratio of cathode surface area to reactor volume), but the impact of cathode size on power generation depended on the substrate strength (COD) and conductivity. These results demonstrate the cathode specific surface area is the most critical factor for scaling-up MFCs to obtain high power densities. © 2010 Elsevier Ltd.
CitationCheng S, Logan BE (2011) Increasing power generation for scaling up single-chamber air cathode microbial fuel cells. Bioresource Technology 102: 4468–4473. Available: http://dx.doi.org/10.1016/j.biortech.2010.12.104.
SponsorsThis research was supported by funding through the National Science Foundation grants BES-0401885 and CBET-0730359, by King Abdullah University of Science and Technology (KAUST) (Award KUS-I1-003-13), and by Key Research Project of Science and Technology Department of Zhejiang Province of China (2010C31014).
CollectionsPublications Acknowledging KAUST Support
- Pre-acclimation of a wastewater inoculum to cellulose in an aqueous-cathode MEC improves power generation in air-cathode MFCs.
- Authors: Cheng S, Kiely P, Logan BE
- Issue date: 2011 Jan
- Proton exchange membrane and electrode surface areas as factors that affect power generation in microbial fuel cells.
- Authors: Oh SE, Logan BE
- Issue date: 2006 Mar
- Electricity generation using an air-cathode single chamber microbial fuel cell in the presence and absence of a proton exchange membrane.
- Authors: Liu H, Logan BE
- Issue date: 2004 Jul 15
- Investigating microbial fuel cell bioanode performance under different cathode conditions.
- Authors: Borole AP, Hamilton CY, Aaron DS, Tsouris C
- Issue date: 2009 Nov-Dec
- Brewery wastewater treatment using air-cathode microbial fuel cells.
- Authors: Feng Y, Wang X, Logan BE, Lee H
- Issue date: 2008 Apr