title: Long-term effects of the transient COD concentration on the performance of microbial fuel cells.
abstract: In this work, the long-term effects of transient chemical oxygen demands (COD) concentrations over the performance of a microbial fuel cell were studied. From the obtained results, it was observed that the repetitive change in the COD loading rate during 12 h conditioned the behavior of the system during periods of up to 7 days. The main modifications were the enhancement of the COD consumption rate and the exerted current. These enhancements yielded increasing Coulombic efficiencies (CEs) when working with COD concentrations of 300 mg/L, but constant CEs when working with COD concentrations from 900 to 1800 mg/L. This effect could be explained by the higher affinity for the substrate of Geobacter than that of the nonelectrogenic organisms such as Clostridia. © 2016 American Institute of Chemical Engineers Biotechnol. Prog., 32:883-890, 2016.
authors.affiliation: Chemical Engineering Dept., ITQUIMA, University of Castilla-La Mancha, Avenida Camilo José Cela S/N, Ciudad Real, 13071, Spain.
authors.forename: S
authors.initials: S
authors.lastname: Mateo
authors.affiliation: Chemical Engineering Dept., ITQUIMA, University of Castilla-La Mancha, Avenida Camilo José Cela S/N, Ciudad Real, 13071, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Gonzalez Del Campo
authors.affiliation: Chemical Engineering Dept., Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Avenida Camilo José Cela S/N, Ciudad Real, 13071, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Lobato
authors.affiliation: Chemical Engineering Dept., Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Avenida Camilo José Cela S/N, Ciudad Real, 13071, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Rodrigo
authors.affiliation: Chemical Engineering Dept., Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Edificio Enrique Costa Novella, Avenida Camilo José Cela S/N, Ciudad Real, 13071, Spain.
authors.forename: P
authors.initials: P
authors.lastname: Cañizares
authors.affiliation: Chemical Engineering Dept., ITQUIMA, University of Castilla-La Mancha, Avenida Camilo José Cela S/N, Ciudad Real, 13071, Spain.
authors.forename: F J
authors.initials: FJ
authors.lastname: Fernandez-Morales
mesh_terms: D001674:Bioelectric Energy Sources; D057919:Biological Oxygen Demand Analysis; D055664:Electrochemical Techniques; D045302:Geobacter / Q000378:metabolism*; D013997:Time Factors
keywords: COD; electricity; long-term; microbial fuel cell