Comprehensive analysis of microbial communities in full-scale mesophilic and thermophilic anaerobic digesters treating food waste-recycling wastewater.
Bioresour Technol
; 259: 442-450, 2018 Jul.
Article
in En
| MEDLINE
| ID: mdl-29609168
ABSTRACT
Microbes were sampled for a year in a full-scale mesophilic anaerobic digester (MD) and a thermophilic anaerobic digester (TD) treating food waste-recycling wastewater (FRW), then microbial community structure, dynamics and diversity were quantified. In the MD, Fastidiosipila, Petrimonas, vadinBC27, Syntrophomonas, and Proteiniphilum were dominant bacterial genera; they may contribute to hydrolysis and fermentation. In the TD, Defluviitoga, Gelria and Tepidimicrobium were dominant bacteria; they may be responsible for hydrolysis and acid production. In the MD, dominant methanogens changed from Methanobacterium (17.1⯱â¯16.9%) to Methanoculleus (67.7⯱â¯17.8%) due to the increase in ammonium concentration. In the TD, dominant methanogens changed from Methanoculleus (42.8⯱â¯13.6%) to Methanothermobacter (49.6⯱â¯11.0%) due to the increase of pH. Bacteria and archaea were more diverse in the MD than in the TD. These results will guide development of microbial management methods to improve the process stability of MD and TD treating FRW.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Bioreactors
/
Wastewater
Language:
En
Journal:
Bioresour Technol
Journal subject:
ENGENHARIA BIOMEDICA
Year:
2018
Document type:
Article
Affiliation country:
South Korea