Record number :
1923859
Title of article :
Increasing power generation for scaling up single-chamber air cathode microbial fuel cells
Author/Authors :
Cheng، نويسنده , , Shaoan and Logan، نويسنده , , Bruce E.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
6
From page :
4468
To page :
4473
Abstract :
Scaling 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.
Keywords :
Solution conductivity , Substrate concentration , Scaling up , Cathode specific surface area , Microbial fuel cell
Journal title :
Bioresource Technology
Journal title :
Bioresource Technology
Serial Year :
2011
Link To Document :
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