Quantification of bio-anode capacitance in bioelectrochemical systems using Electrochemical Impedance Spectroscopy
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Otros documentos de la autoría: Ter Heijne, Annemiek; Liu, Dandan; Sulonen, Mira; Sleutels, Tom; Fabregat-Santiago, Francisco
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
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Título
Quantification of bio-anode capacitance in bioelectrochemical systems using Electrochemical Impedance SpectroscopyAutoría
Fecha de publicación
2018-10Editor
ElsevierCita bibliográfica
TER HEIJNE, Annemiek, et al. Quantification of bio-anode capacitance in bioelectrochemical systems using Electrochemical Impedance Spectroscopy. Journal of Power Sources, 2018, 400: 533-538.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S0378775318308620Versión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
Understanding the electrochemical properties of bio-anodes is essential to improve performance of bioelectrochemical systems. Electrochemical Impedance Spectroscopy (EIS) is often used to study these properties in ... [+]
Understanding the electrochemical properties of bio-anodes is essential to improve performance of bioelectrochemical systems. Electrochemical Impedance Spectroscopy (EIS) is often used to study these properties in detail. Analysis of the EIS response, however, is challenging due to the interfering effect of the large capacitance of typically used graphite and carbon-based electrodes. In this study, we used flat electrodes made of conductive Fluorine-doped Tin Oxide (FTO) as anode, and monitored bio-anode performance. We show that with this configuration, it is possible to accurately separate the distinct contributions to the electrical response of the bio-anodes: charge transfer, biofilm and diffusion resistances, and biofilm capacitance. We observed that the capacitance of the biofilm increased from 2 μF cm−2 to 450 μF cm−2 during biofilm growth, showing a relationship with current and total produced charge. These results suggest that biofilm capacitance is a measure for the amount of active biomass in bioelectrochemical systems. At the end of the experiment, the biofilm was harvested from the FTO electrode and an average yield of 0.55 g COD biomass/mol e− was determined. [-]
Proyecto de investigación
European Union Seventh Framework Programme (FP7/2012–2016) project ‘Bioelectrochemical systems for metal production, recycling, and remediation’ (grant n° 282970) ; NWO VENI (grant n° 13631)Derechos de acceso
© 2018 The Authors. Published by Elsevier B.V.
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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