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- Title
Microbial community composition, dynamics, and biogeochemistry during the start-up of a partial nitritation-anammox pathway in an upflow reactor.
- Authors
Ribeiro, Hugo; Wijaya, I. Made W.; Soares-Santos, Verónica; Soedjono, Eddy Setiadi; Slamet, Agus; Teixeira, Catarina; Bordalo, Adriano A.
- Abstract
The dynamics of the microbial community and functional taxa related to nitrogen (N) removal biogeochemical processes can be important to the development of new cost-effective processes in wastewater treatment. This work consisted of the start-up of an upflow reactor for N-removal by partial nitritation/anammox pathway, working at ambient temperature, during 397 d. After an adaptation to the reactor operational conditions, a stable total N-removal (52% efficiency) was linked to ammonium deletion. High-throughput sequencing of 16S rRNA gene amplicons analysis revealed a relative abundance of about 1% of anammox genus Candidatus Brocadia after 397 d. Nitrosomonas, a nitrifying bacterium also increased the relative abundance, together with the accretion of relative numbers of Denitratisoma and Thiobacillus, recognized as heterotrophic and chemolithoautotrophic denitrifying bacteria, respectively. These findings provide a better understanding of the N-removal by key microbial groups that may be useful to optimize future field application of systems working at ambient temperature.
- Subjects
TEMPERATURE; MICROBIAL communities; NITROGEN removal (Sewage purification); BIOGEOCHEMISTRY
- Publication
Sustainable Environment Research (2468-2039), 2022, Vol 32, Issue 1, p1
- ISSN
2468-2039
- Publication type
Article
- DOI
10.1186/s42834-022-00130-1