Accumulation of propionic acid during consecutive batch anaerobic digestion of commercial food waste - Agropolis Accéder directement au contenu
Article Dans Une Revue Bioresource Technology Année : 2017

Accumulation of propionic acid during consecutive batch anaerobic digestion of commercial food waste

Résumé

The objective of this study was to test three different alternatives to mitigate the destabilizing effect of accumulation of ammonia and volatile fatty acids during food waste anaerobic digestion. The three options tested (low temperature, co-digestion with paper waste and trace elements addition) were compared using consecutive batch reactors. Although methane was produced efficiently (∼500 mlCH4·gVS-1; 16 lCH4·l reactor-1), the concentrations of propionic acid increased gradually (up to 21.6 g·l-1). This caused lag phases in the methane production and eventually led to acidification at high substrate loads. The addition of trace elements improved the kinetics and allowed higher substrate loads, but could not avoid propionate accumulation. Here, it is shown for the first time that addition of activated carbon, trace elements and dilution can favor propionic acid consumption after its accumulation. These promising options should be optimized to prevent propionate accumulation.
Fichier principal
Vignette du fichier
1-s2.0-S0960852417314633-main.pdf (780.84 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04180656 , version 1 (13-08-2023)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

Citer

Gabriel Capson-Tojo, Diane Ruiz, Maxime Rouez, Marion Crest, Jean-Philippe Steyer, et al.. Accumulation of propionic acid during consecutive batch anaerobic digestion of commercial food waste. Bioresource Technology, 2017, 245, pp.724-733. ⟨10.1016/j.biortech.2017.08.149⟩. ⟨hal-04180656⟩
48 Consultations
36 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More