TY - JOUR
T1 - Surface modification for enhanced biofilm formation and electron transport in Shewanella anodes
AU - Cornejo, J.A.
AU - Lopez, C.
AU - Babanova, S.
AU - Santoro, C.
AU - Artyushkova, K.
AU - Ista, L.
AU - Schuler, A.J.
AU - Atanassov, P.
PY - 2015
Y1 - 2015
N2 - In this study a simple, fast and effective surface modification method for enhanced biofilm formation, increased electron transfer rate and higher current density generation from microbial fuel cell (MFC) has been demonstrated. This method consists of partial oxidation of carbon felt material by UV/O3 treatment. Results from the electrochemical studies performed suggest that Shewanella oneidensis MR-1 biofilm formation is favored on UV/O3 treated carbon felt electrodes when subjected to an applied potential of −0.3 V vs. Ag/AgCl. Carbon electrodes exposed to 45 min of UV/O3 treatment provided the best electrochemical results and richer bacterial cell attachment. Ozone exposure above 45 min presented decreased MFC performance and current generation. Visual confirmation via SEM images indicated a link between the current generation and the presence of biomass attached to the working electrodes. In addition, we have shown enrichment of the electrode surface with flavin, which correlates with the increased anodic performance.
AB - In this study a simple, fast and effective surface modification method for enhanced biofilm formation, increased electron transfer rate and higher current density generation from microbial fuel cell (MFC) has been demonstrated. This method consists of partial oxidation of carbon felt material by UV/O3 treatment. Results from the electrochemical studies performed suggest that Shewanella oneidensis MR-1 biofilm formation is favored on UV/O3 treated carbon felt electrodes when subjected to an applied potential of −0.3 V vs. Ag/AgCl. Carbon electrodes exposed to 45 min of UV/O3 treatment provided the best electrochemical results and richer bacterial cell attachment. Ozone exposure above 45 min presented decreased MFC performance and current generation. Visual confirmation via SEM images indicated a link between the current generation and the presence of biomass attached to the working electrodes. In addition, we have shown enrichment of the electrode surface with flavin, which correlates with the increased anodic performance.
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-84937035545&partnerID=MN8TOARS
U2 - 10.1149/2.0271509jes
DO - 10.1149/2.0271509jes
M3 - Article
SN - 0013-4651
VL - 162
SP - H597-H603
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 9
ER -
