Bacterial community composition in a two-stage anaerobic membrane bioreactor for co-digestion of food waste and food court wastewater
Issued Date
2024-01-01
Resource Type
ISSN
09608524
eISSN
18732976
Scopus ID
2-s2.0-85176292051
Pubmed ID
37898371
Journal Title
Bioresource Technology
Volume
391
Rights Holder(s)
SCOPUS
Bibliographic Citation
Bioresource Technology Vol.391 (2024)
Suggested Citation
Le T.S., Bui X.T., Nguyen P.D., Hao Ngo H., Dang B.T., Le Quang D.T., Thi Pham T., Visvanathan C., Diels L. Bacterial community composition in a two-stage anaerobic membrane bioreactor for co-digestion of food waste and food court wastewater. Bioresource Technology Vol.391 (2024). doi:10.1016/j.biortech.2023.129925 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/91101
Title
Bacterial community composition in a two-stage anaerobic membrane bioreactor for co-digestion of food waste and food court wastewater
Other Contributor(s)
Abstract
This study investigated the microbial community of a two-stage anaerobic membrane bioreactor (2S-AnMBR) co-digesting food waste and food court wastewater. The hydrolysis reactor (HR) was dominated by Bacteroidetes and Firmicutes phylum, with genus Lactobacillus enriched due to food waste fermentation. The up-flow anaerobic sludge blanket (UASB) was dominated by genus such as Methanobacterium and Methanosaeta. The presence of Methanobacterium (91 %) and Methanosaeta (7.5 %) suggested that methane production pathways inevitably undergo both hydrogenotrophic and acetoclastic methanogenesis. Hydrogen generated during hydrolysis fermentation in the HR contributed to methane production in the UASB via hydrogenotrophic pathways. However, the low abundance of Methanosaeta in the UASB can be attributed to the limited inffluent of volatile fatty acids (VFA) and the competitive presence of acetate-consuming bacteria Acinetobacter. The UASB exhibited more excellent dispersion and diversity of metabolic pathways compared to the HR, indicating efficient methane production.