Blackwater biomethane recovery using a thermophilic upflow anaerobic sludge blanket reactor: Impacts of effluent recirculation on reactor performance.
ABC transporters
Effluent recirculation
Syntrophic acetate oxidization
Syntrophic propionate oxidation
Thermophilic anaerobic digestion
Upflow anaerobic sludge blanket reactor (UASB)
Journal
Journal of environmental management
ISSN: 1095-8630
Titre abrégé: J Environ Manage
Pays: England
ID NLM: 0401664
Informations de publication
Date de publication:
15 Nov 2020
15 Nov 2020
Historique:
received:
05
04
2020
revised:
03
07
2020
accepted:
29
07
2020
pubmed:
18
8
2020
medline:
29
9
2020
entrez:
18
8
2020
Statut:
ppublish
Résumé
Thermophilic anaerobic digestion is a promising process for high-solid blackwater (BW) treatment due to improved hydrolysis rates, high methanogenesis efficiency, and pathogen removal, when compared with mesophilic treatment. In the present work, the effects of effluent recirculation (i.e., mixing) on thermophilic blackwater treatment were studied. A laboratory-scale thermophilic upflow anaerobic sludge blanket reactor was operated with and without effluent recirculation. The methanogenesis efficiency of the BW treatment increased from 45.0 ± 2.9% when effluent recirculation was applied to 56.7 ± 5.5% without effluent recirculation. Without effluent recirculation, the COD accumulation in the bioreactor was reduced from 17.2 to 3.8% and the effluent volatile fatty acids (VFA) concentration was reduced from 0.64 ± 0.18 to 0.15 ± 0.10 g/L. Further, both acetoclastic and hydrogenotrophic methanogenic activity increased from 101.3 ± 10.8 and 93.9 ± 6.1 to 120.4 ± 9.4 and 118.2 ± 13.2 mg CH
Identifiants
pubmed: 32805474
pii: S0301-4797(20)31082-3
doi: 10.1016/j.jenvman.2020.111157
pii:
doi:
Substances chimiques
Fatty Acids, Volatile
0
Sewage
0
Methane
OP0UW79H66
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
111157Informations de copyright
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