TY - JOUR
T1 - Microbial fuel cells meet with external resistance
AU - Katuri, Krishna P.
AU - Scott, Keith
AU - Head, Ian M.
AU - Picioreanu, Cristian
AU - Curtis, Tom P.
N1 - Generated from Scopus record by KAUST IRTS on 2022-09-13
PY - 2011/2/1
Y1 - 2011/2/1
N2 - The influence of external load on the composition of the anodic biofilm microbial community and biomass yield was investigated in a microbial fuel cell fed with glucose and domestic wastewater was used as source of electrogens. Denaturing gradient gel electrophoresis (DGGE) of polymerase chain reaction (PCR) amplified 16S rRNA gene fragments revealed distinct differences in anodic bacterial communities formed at the anode of each MFC operated under a different external load. These results implied that in an MFC, electrogenic bacteria were enriched under higher current densities, i.e., low external load, and were able to sustain better current and effluent quality. The influence of the external resistance applied to the MFCs during formation of the bacterial communities from sewage wastewater was shown to have no significant effect on power performance of the MFCs nor to have a significant influence on their anodic activity with both glucose and brewery wastewater as fuel. As expected, current generation, COD removal and the biomass yield were all directly influenced by the external load. Significantly, when operated under lower external load, the biomass yield in the MFC was less than that in conventional anaerobic digestion (i.e., control). © 2010 Elsevier Ltd.
AB - The influence of external load on the composition of the anodic biofilm microbial community and biomass yield was investigated in a microbial fuel cell fed with glucose and domestic wastewater was used as source of electrogens. Denaturing gradient gel electrophoresis (DGGE) of polymerase chain reaction (PCR) amplified 16S rRNA gene fragments revealed distinct differences in anodic bacterial communities formed at the anode of each MFC operated under a different external load. These results implied that in an MFC, electrogenic bacteria were enriched under higher current densities, i.e., low external load, and were able to sustain better current and effluent quality. The influence of the external resistance applied to the MFCs during formation of the bacterial communities from sewage wastewater was shown to have no significant effect on power performance of the MFCs nor to have a significant influence on their anodic activity with both glucose and brewery wastewater as fuel. As expected, current generation, COD removal and the biomass yield were all directly influenced by the external load. Significantly, when operated under lower external load, the biomass yield in the MFC was less than that in conventional anaerobic digestion (i.e., control). © 2010 Elsevier Ltd.
UR - https://linkinghub.elsevier.com/retrieve/pii/S0960852410018560
UR - http://www.scopus.com/inward/record.url?scp=78650833229&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2010.10.147
DO - 10.1016/j.biortech.2010.10.147
M3 - Article
C2 - 21146983
SN - 0960-8524
VL - 102
SP - 2758
EP - 2766
JO - Bioresource Technology
JF - Bioresource Technology
IS - 3
ER -