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Dynamics of nitrogen compounds and functional genes in a nitrification-denitrification coupling process
- Title
- Dynamics of nitrogen compounds and functional genes in a nitrification-denitrification coupling process
- Authors
- Kwon J.-H.; Park H.-J.; Lee Y.-Y.; Cho K.-S.
- Ewha Authors
- 조경숙
- SCOPUS Author ID
- 조경숙
- Issue Date
- 2020
- Journal Title
- Microbiology and Biotechnology Letters
- ISSN
- 1598-642X
- Citation
- Microbiology and Biotechnology Letters vol. 48, no. 1, pp. 72 - 78
- Keywords
- Coupling process; Denitrification; Fnctional genes; Nitrification; Nitrous oxide; Wastewater treatment
- Publisher
- Korean Society for Microbiology and Biotechnology
- Indexed
- SCOPUS; KCI
- Document Type
- Article
- Abstract
- The dynamics of nitrogen compounds and RNA-based functional genes were characterized in the nitrification-denitrification coupling process. For the removal of residual ammonium, intermittent aeration was introduced in the denitrification reactor. N2O production was not observed in both reactors. In both reactors, the nitrifying genes (achaeal-amoA, bacterial-amoA and hor) and denitrifying genes (narG, nirK, norB and nosZ) had a copy number of 3.92 × 102−7.25 × 105 and 2.85 × 102−3.06 × 104 per ng of DNA, respectively. These results suggest that denitrification and nitrification reactions occur in both the nitrification and denitrification reactors, respectively. Therefore, the coupling process is a promising one for the conversion of ammonium to nitrogen without generating N2O. © 2020, The Korean Society for Microbiology and Biotechnology
- DOI
- 10.4014/mbl.1909.09004
- Appears in Collections:
- 공과대학 > 환경공학과 > Journal papers
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