RT info:eu-repo/semantics/article
T1 Characterization of Anaerobic Biofilms Growing on Carbon Felt Bioanodes Exposed to Air
A1 Alonso García, Raúl Marcos
A1 Pelaz Guerra, Guillermo
A1 San Martin Bécares, María Isabel
A1 Morán Palao, Antonio
A1 Escapa González, Adrián
A2 Ingenieria Electrica
K1 Bioquímica
K1 Exoelectrogen
K1 Biocatalyst
K1 Microenvironment
K1 Porous electrode
K1 Anaerobic
K1 2302 Bioquímica
K1 2406.02 Bioelectricidad
AB [EN] The role of oxygen in anodic biofilms is still a matter of debate. In this study, we tried to elucidate the structure and performance of an electrogenic biofilm that develops on air-exposed, carbon felt electrodes, commonly used in bioelectrochemical systems. By simultaneously recording the current density produced by the bioanode and dissolved oxygen concentration, both inside and in the vicinity of the biofilm, it was possible to demonstrate the influence of a protective aerobic layer present in the biofilm (mainly formed by Pseudomonas genus bacteria) that prevents electrogenic bacteria (such as Geobacter sp.) from hazardous exposure to oxygen during its normal operation. Once this protective barrier was deactivated for a long period of time, the catalytic capacity of the biofilm was severely affected. In addition, our results highlighted the importance of the material’s porous structure for oxygen penetration in the electrode.
PB MDPI
LK https://hdl.handle.net/10612/20273
UL https://hdl.handle.net/10612/20273
NO Alonso, R. M., Pelaz, G., San-Martín, M. I., Morán, A., & Escapa, A. (2020). Characterization of anaerobic biofilms growing on carbon felt bioanodes exposed to air. Catalysts, 10(11), 1-12. https://doi.org/10.3390/CATAL10111341
NO Supplementary Materials: The following are available online at https://www.mdpi.com/2073-4344/10/11/1341/s1, Figure S1: Dissolved oxygen profile. Rejected because the data acquisition system was accidentally interrupted at the end of the experiment; Figure S2: Another dissolved oxygen profile. Rejected because the data acquisition system was accidentally interrupted at the end of the experiment.
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 03-jun-2024