TY - JOUR
T1 - Combining microbial cultures for efficient production of electricity from butyrate in a microbial electrochemical cell
AU - Miceli, Joseph F.
AU - Garcia-Peña, Ines
AU - Parameswaran, Prathap
AU - Torres, César I.
AU - Krajmalnik-Brown, Rosa
N1 - Funding Information:
This work was funded by a combination of the Biological Design Graduate Program at Arizona State University, a Science Foundation Arizona Fellowship , the Arizona State University Swette Center for Environmental Biotechnology , the Academia Mexicana de Ciencias (AMC) and Fundación Mexico-Estados Unidos (FUMEC) . Krajmalnik-Brown is funded by NSF CAREER Award 1053939 and Torres by United States Office of Naval Research Grant N00014-10-M-0231 .
PY - 2014/10
Y1 - 2014/10
N2 - Butyrate is an important product of anaerobic fermentation; however, it is not directly used by characterized strains of the highly efficient anode respiring bacteria (ARB) Geobacter sulfurreducens in microbial electrochemical cells. By combining a butyrate-oxidizing community with a Geobacter rich culture, we generated a microbial community which outperformed many naturally derived communities found in the literature for current production from butyrate and rivaled the highest performing natural cultures in terms of current density (~11A/m2) and Coulombic efficiency (~70%). Microbial community analyses support the shift in the microbial community from one lacking efficient ARB in the marine hydrothermal vent community to a community consisting of ~80% Geobacter in the anode biofilm. This demonstrates the successful production and adaptation of a novel microbial culture for generating electrical current from butyrate with high current density and high Coulombic efficiency, by combining two mixed microbial cultures containing complementing biochemical pathways.
AB - Butyrate is an important product of anaerobic fermentation; however, it is not directly used by characterized strains of the highly efficient anode respiring bacteria (ARB) Geobacter sulfurreducens in microbial electrochemical cells. By combining a butyrate-oxidizing community with a Geobacter rich culture, we generated a microbial community which outperformed many naturally derived communities found in the literature for current production from butyrate and rivaled the highest performing natural cultures in terms of current density (~11A/m2) and Coulombic efficiency (~70%). Microbial community analyses support the shift in the microbial community from one lacking efficient ARB in the marine hydrothermal vent community to a community consisting of ~80% Geobacter in the anode biofilm. This demonstrates the successful production and adaptation of a novel microbial culture for generating electrical current from butyrate with high current density and high Coulombic efficiency, by combining two mixed microbial cultures containing complementing biochemical pathways.
KW - Fermentation
KW - Geobacter
KW - Microbial fuel cell
KW - Short chain fatty acids
KW - Syntrophy
UR - http://www.scopus.com/inward/record.url?scp=84904563600&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2014.06.090
DO - 10.1016/j.biortech.2014.06.090
M3 - Artículo
SN - 0960-8524
VL - 169
SP - 169
EP - 174
JO - Bioresource Technology
JF - Bioresource Technology
ER -