Nitrogen cycle
Intermittent aeration and anammox nitrogen
Open access · cc by · source: Europe PMC
Switching oxygen on and off kept anammox working while wiping out nitrite-oxidizing bacteria.
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Intermittent aeration and anammox nitrogen
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55 MAGs were recovered.
A total of 55 metagenome-assembled genomes (MAGs)
What process was managed?
community performing the PNA process
Key findings
TN removal stayed about 75–86%; NOB were essentially absent; AOB ~13% and anammox ~22% of the community; 79% of reads mapped to 55 MAGs.
Methodology
Operated a partial nitritation–anammox granule reactor with rising redox-switch frequency and recovered 55 MAGs from monthly metagenomes.
Limitations
Does not demonstrate the same NOB suppression in full-scale plants with real wastewater organics.
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