Abstract:
:Anaerobic ammonium oxidation (anammox) bacteria significantly improve the efficiency and reduce cost of nitrogen removal in wastewater treatment plants. However, their slow growth and vulnerable activity limit the application of anammox technology. In this paper, the enhancement of biotin on the nitrogen removal activity of anammox bacteria in short-term batch experiments was studied. We found that biotin played a significant role in promoting anammox activity within a biotin concentration range of 0.1-1.5 mg/L. At a biotin concentration of 1.0 mg/L, the total nitrogen removal rate (NRR) increased by 112%, extracellular polymeric substance (EPS) secretion and heme production significantly improved, and anammox bacterial biomass increased to maximum levels. Moreover, the predominant genus of anammox bacteria was Candidatus Brocadia.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Li Q,Chen J,Liu GH,Xu X,Zhang Q,Wang Y,Yuan J,Li Y,Qi L,Wang Hdoi
10.1038/s41598-021-81738-ysubject
Has Abstractpub_date
2021-01-21 00:00:00pages
2038issue
1issn
2045-2322pii
10.1038/s41598-021-81738-yjournal_volume
11pub_type
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