Industrially scalable surface treatments to enhance the current density output from graphite bioanodes fueled by real domestic wastewater - Archive ouverte HAL Access content directly
Journal Articles iScience Year : 2021

Industrially scalable surface treatments to enhance the current density output from graphite bioanodes fueled by real domestic wastewater

Abstract

Acid and electrochemical surface treatments of graphite electrode, used individually or in combination, significantly improved the microbial anode current production, by +17% to +56%, in well-regulated and duplicated electroanalytical experimental systems. Of all the consequences induced by surface treatments, the modifications of the surface nano-topography preferentially justify an improvement in the fixation of bacteria, and an increase of the specific surface area and the electrochemically accessible surface of graphite electrodes, which are at the origin of the higher performances of the bioanodes supplied with domestic wastewater. The evolution of the chemical composition and the appearance of C-O, C=O, and O=C-O groups on the graphite surface created by combining acid and electrochemical treatments was prejudicial to the formation of efficient domestic-wastewater-oxidizing bioanodes. The comparative discussion, focused on the positioning of the performances, shows the industrial interest of applying the surface treatment method to the world of bioelectrochemical systems.
Fichier principal
Vignette du fichier
Roubaud_27518.pdf (3.07 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

hal-03164721 , version 1 (10-03-2021)

Identifiers

Cite

Emma Roubaud, Rémy Lacroix, Serge da Silva, Jérôme Esvan, Luc Etcheverry, et al.. Industrially scalable surface treatments to enhance the current density output from graphite bioanodes fueled by real domestic wastewater. iScience, 2021, 24 (3), pp.102162. ⟨10.1016/j.isci.2021.102162⟩. ⟨hal-03164721⟩
18 View
25 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More