Microbial profiling during anaerobic digestion of cheese whey in reactors operated at different conditions.
Cheese whey
Hydrogenotrophic methanogenesis
In-situ H(2) dispersion
Mesophilic microbial community
Methane production rate
Thermophilic microbial community
Journal
Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523
Informations de publication
Date de publication:
Mar 2019
Mar 2019
Historique:
received:
31
10
2018
revised:
20
12
2018
accepted:
23
12
2018
pubmed:
2
1
2019
medline:
8
8
2019
entrez:
2
1
2019
Statut:
ppublish
Résumé
This study investigates the efficiency in methane production of lab-scale mesophilic (37 °C) and thermophilic (54 °C) continuous stirred tank reactors fed with cheese whey at different operational conditions. Results showed that whey mono-digestion was feasible at mesophilic conditions, while at thermophilic conditions frequent acidification incidents were recorded. The limited buffer capacity of the influent feedstock was responsible for the unstable anaerobic digestion process. The co-digestion of cheese whey with cattle manure maintained the pH levels higher than 7.0, and therefore, stable methane production rates were achieved without any significant accumulation of volatile fatty acids. An additional enhancement of the methane productivity was achieved by in-situ H
Identifiants
pubmed: 30599281
pii: S0960-8524(18)31755-3
doi: 10.1016/j.biortech.2018.12.084
pii:
doi:
Substances chimiques
Fatty Acids, Volatile
0
Manure
0
RNA, Ribosomal, 16S
0
Types de publication
Journal Article
Langues
eng
Pagination
375-385Informations de copyright
Copyright © 2018 Elsevier Ltd. All rights reserved.