Ammonia stress decreased biomarker genes of acetoclastic methanogenesis and second peak of production rates during anaerobic digestion of swine manure.
Ammonia
Apparent kinetic
Biomarker
Lag-phase
Methanogenic pathway
Journal
Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523
Informations de publication
Date de publication:
Dec 2020
Dec 2020
Historique:
received:
23
06
2020
revised:
08
08
2020
accepted:
12
08
2020
pubmed:
22
8
2020
medline:
9
10
2020
entrez:
22
8
2020
Statut:
ppublish
Résumé
Research shows that anaerobic digestion could acclimate to ammonia stress; however, the acclimation remained unaddressed. In this study, evolution of microbial community, functional gene, and pathway was linked with apparent kinetic and performance in unacclimated inoculum under ammonia stress, to deepen understanding of the acclimation. The second peak in production rate demonstrated crucial kinetic changes under ammonia stress. The methane loss was mainly protein in residual COD. Metagenomic showed initial inhibition in all methane metabolism pathways under ammonia stress, and recovery in acetate uptake was the key to ammonia acclimation. The acclimation was found in alternative pathway of Acetyl-CoA (CH
Identifiants
pubmed: 32822891
pii: S0960-8524(20)31284-0
doi: 10.1016/j.biortech.2020.124012
pii:
doi:
Substances chimiques
Biomarkers
0
Manure
0
Ammonia
7664-41-7
Methane
OP0UW79H66
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
124012Informations de copyright
Copyright © 2020. Published by Elsevier Ltd.