Membrane bioreactor-assisted volatile fatty acids production and in situ recovery from cow manure.
Anaerobic digestion
Cow manure
Membrane bioreactor
Volatile fatty acids
Journal
Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523
Informations de publication
Date de publication:
Feb 2021
Feb 2021
Historique:
received:
14
10
2020
revised:
21
11
2020
accepted:
23
11
2020
pubmed:
5
12
2020
medline:
30
12
2020
entrez:
4
12
2020
Statut:
ppublish
Résumé
Cow manure (CM) generation in large volumes has for long been considered a waste management challenge. However, the organic content of CM signals opportunities for the production of value-added bioproducts such as volatile fatty acids (VFAs) through anaerobic digestion (AD). However, a robust VFAs fermentation process requires effective methane formation inhibition and enhance VFAs recovery. In this study, thermal pretreatment was applied to inhibit methanogens for enhanced VFAs production and an immersed membrane bioreactor (iMBR) for in situ recovery of VFAs in a semi-continuous AD. Maximal VFAs yield of 0.41 g VFAs/g volatile solids (VS) was obtained from thermally-treated CM without inoculum addition. The CM was further fed to the iMBR operating at organic loading rates of 0.8-4.7 gVS/L.d. The VFAs concentration increased to 6.93 g/L by rising substrate loading to 4.7 g VS/L.d. The applied iMBR set-up was successfully used for stable long-term (114 days) VFAs production and recovery.
Identifiants
pubmed: 33276207
pii: S0960-8524(20)31730-2
doi: 10.1016/j.biortech.2020.124456
pii:
doi:
Substances chimiques
Fatty Acids, Volatile
0
Manure
0
Methane
OP0UW79H66
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
124456Informations de copyright
Copyright © 2020. Published by Elsevier Ltd.