Comparison of synthetic medium and wastewater used as dilution medium to design scalable microbial anodes: Application to food waste treatment - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Bioresource Technology Année : 2015

Comparison of synthetic medium and wastewater used as dilution medium to design scalable microbial anodes: Application to food waste treatment

Elise Blanchet
  • Fonction : Auteur
  • PersonId : 976176
Benjamin Erable
Arnaud Bridier
Théodore Bouchez
Alain Bergel

Résumé

The objective was to replace synthetic medium by wastewater as a strategy to design low-cost scalable bioanodes. The addition of activated sludge was necessary to form primary bioanodes that were then used as the inoculum to form the secondary bioanodes. Bioanodes formed in synthetic medium with acetate 10 mM provided current densities of 21.9 ± 2.1 A/m2, while bioanodes formed in wastewater gave 10.3 ± 0.1 A/m2. The difference was explained in terms of biofilm structure, electrochemical kinetics and redox charge content of the biofilms. In both media, current densities were straightforwardly correlated with the biofilm enrichment in Geobacteraceae but, inside this family, Geobacter sulfurreducens and an uncultured Geobacter sp. were dominant in the synthetic medium, while growth of another Geobacter sp. was favoured in wastewater. Finally, the primary/secondary procedure succeeded in designing bioanodes to treat food wastes by using wastewater as dilution medium, with current densities of 7 ± 1.1 A/m2.
Fichier principal
Vignette du fichier
Blanchet_13879.pdf (990.61 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01149751 , version 1 (07-05-2015)

Identifiants

Citer

Elise Blanchet, Elie Desmond-Le Quemener, Benjamin Erable, Arnaud Bridier, Théodore Bouchez, et al.. Comparison of synthetic medium and wastewater used as dilution medium to design scalable microbial anodes: Application to food waste treatment. Bioresource Technology, 2015, vol. 185, pp. 106-115. ⟨10.1016/j.biortech.2015.02.097⟩. ⟨hal-01149751⟩
113 Consultations
437 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More