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dc.contributor.authorHeijne, Annemiek ter
dc.contributor.authorSchaetzle, Olivier
dc.contributor.authorGimenez, Sixto
dc.contributor.authorNavarro, Lucia
dc.contributor.authorHamelers, Bert
dc.contributor.authorFabregat-Santiago, Francisco
dc.date.accessioned2016-02-10T11:56:04Z
dc.date.available2016-02-10T11:56:04Z
dc.date.issued2015-12
dc.identifier.citationTER HEIJNE, Annemiek, et al. Analysis of bio-anode performance through electrochemical impedance spectroscopy. Bioelectrochemistry, 2015, vol. 106, p. 64-72.ca_CA
dc.identifier.issn1567-5394
dc.identifier.urihttp://hdl.handle.net/10234/149438
dc.description.abstractIn this paper we studied the performance of bioanodes under different experimental conditions using polarization curves and impedance spectroscopy. We have identified that the large capacitances of up to 1 mF·cm− 2 for graphite anodes have their origin in the nature of the carbonaceous electrode, rather than the microbial culture. In some cases, the separate contributions of charge transfer and diffusion resistance were clearly visible, while in other cases their contribution was masked by the high capacitance of 1 mF·cm− 2. The impedance data were analyzed using the basic Randles model to analyze ohmic, charge transfer and diffusion resistances. Increasing buffer concentration from 0 to 50 mM and increasing pH from 6 to 8 resulted in decreased charge transfer and diffusion resistances; lowest values being 144 Ω·cm2 and 34 Ω·cm2, respectively. At acetate concentrations below 1 mM, current generation was limited by acetate. We show a linear relationship between inverse charge transfer resistance at potentials close to open circuit and saturation (maximum) current, associated to the Butler–Volmer relationship that needs further exploration.ca_CA
dc.description.sponsorShipThe authors wish to acknowledge funding from the European Union Seventh Framework Programme (FP7/2012-2016) project ‘Bioelectrochemical systems for metal production, recycling, and remediation’ under grant agreement no. 282970. AtH is supported by a NWO VENI grant no. 13631. OS was supported by the French environmental agency ADEME, by the Region Bretagne and by Rennes Metropole when doing the experiments. This work was performed in the cooperation framework of Wetsus, Centre of Excellence for Sustainable Water Technology (www.wetsus.nl). Wetsus is co-funded by the Dutch Ministry of Economic Affairs and Ministry of Infrastructure and Environment, the European Union Regional Development Fund, the Province of Fryslân, and the Northern Netherlands Provinces.ca_CA
dc.format.extent9 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherElsevierca_CA
dc.relation.isPartOfBioelectrochemistry, 2015, vol. 106ca_CA
dc.rightsCopyright © 2016 Elsevier B.V. or its licensors or contributorsca_CA
dc.subjectElectrochemical impedance spectroscopyca_CA
dc.subjectInternal resistanceca_CA
dc.subjectMicrobial fuel cellca_CA
dc.subjectCharge transferca_CA
dc.subjectDiffusionca_CA
dc.titleAnalysis of bio-anode performance through electrochemical impedance spectroscopyca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttp://dx.doi.org/10.1016/j.bioelechem.2015.04.002
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_CA
dc.relation.publisherVersionhttp://www.sciencedirect.com/science/article/pii/S1567539415000377ca_CA


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