Artículo
Energetics, electron uptake mechanisms and limitations of electroautotrophs growing on biocathodes – A review
Massazza, Diego Ariel
; Robledo, Alejandro Javier
; Rodríguez Simón, Carlos Norberto
; Busalmen, Juan Pablo
; Bonanni, Pablo Sebastian
Fecha de publicación:
09/2021
Editorial:
Elsevier
Revista:
Bioresource Technology
ISSN:
0960-8524
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Electroautotrophs are microorganisms that can take the electrons needed for energy generation, CO2 fixation and other metabolic reactions from a polarized electrode. They have been the focus of intense research for its application in wastewater treatment, bioelectrosynthetic processes and hydrogen generation. As a general trend, current densities produced by the electron uptake of these microorganisms are low, limiting their applicability at large scale. In this work, the electron uptake mechanisms that may operate in electroautotrophs are reviewed, aiming at finding possible causes for this low performance. Biomass yields, growth rates and electron uptake rates observed when these microorganisms use chemical electron donors are compared with those typically obtained with electrodes, to explore limitations and advantages inherent to the electroautotrophic metabolism. Also, the factors affecting biofilm development are analysed to show how interfacial interactions condition bacterial adhesion, biofilm growth and electrons uptake. Finally, possible strategies to overcome these limitations are described.
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Articulos(INTEMA)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)
Citación
Massazza, Diego Ariel; Robledo, Alejandro Javier; Rodríguez Simón, Carlos Norberto; Busalmen, Juan Pablo; Bonanni, Pablo Sebastian; Energetics, electron uptake mechanisms and limitations of electroautotrophs growing on biocathodes – A review; Elsevier; Bioresource Technology; 342; 9-2021; 1-13
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