Gilbert, Eva Marianne ; Agrawal, Shelesh ; Brunner, Fabian C. ; Schwartz, Thomas ; Horn, Harald ; Lackner, Susanne (2014)
Response of different Nitrospira sp. to anoxic periods depends on operational DO.
In: Environmental Science & Technology, 48 (5)
doi: 10.1021/es404992g
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The exploitation of a lag phase in nitrate production after anoxic periods is a promising approach to suppress nitrite oxidizing bacteria, which is crucial for implementations of the combined partial nitritation-anammox process. An in depth study of the actual lag phase in nitrate production after short anoxic periods was performed with varied temperatures and air flow rates. In monitored batch experiments, biomass from four different full-scale partial nitritation-anammox plants was subjected to anoxic periods of 5 ? 60 minutes. Ammonium and the nitrite that was produced were present to reproduce reactor conditions and enable ammonium and nitrite oxidation at the same time. The lag phase observed in nitrite oxidation exceeded the lag phase in ammonium oxidation after anoxic periods of more than 15-20 minutes. Lower temperatures slowed down the conversion rates but did not affect the lag phases. The operational oxygen concentration in the originating full scale plants strongly affected the length of the lag phase, which could be attributed to different species of Nitrospira spp. detected by DGGE and sequencing analysis.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Gilbert, Eva Marianne ; Agrawal, Shelesh ; Brunner, Fabian C. ; Schwartz, Thomas ; Horn, Harald ; Lackner, Susanne |
| Art des Eintrags: | Bibliographie |
| Titel: | Response of different Nitrospira sp. to anoxic periods depends on operational DO |
| Sprache: | Englisch |
| Publikationsjahr: | 2014 |
| Verlag: | American Chemical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Environmental Science & Technology |
| Jahrgang/Volume einer Zeitschrift: | 48 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1021/es404992g |
| URL / URN: | http://dx.doi.org/10.1021/es404992g |
| Kurzbeschreibung (Abstract): | The exploitation of a lag phase in nitrate production after anoxic periods is a promising approach to suppress nitrite oxidizing bacteria, which is crucial for implementations of the combined partial nitritation-anammox process. An in depth study of the actual lag phase in nitrate production after short anoxic periods was performed with varied temperatures and air flow rates. In monitored batch experiments, biomass from four different full-scale partial nitritation-anammox plants was subjected to anoxic periods of 5 ? 60 minutes. Ammonium and the nitrite that was produced were present to reproduce reactor conditions and enable ammonium and nitrite oxidation at the same time. The lag phase observed in nitrite oxidation exceeded the lag phase in ammonium oxidation after anoxic periods of more than 15-20 minutes. Lower temperatures slowed down the conversion rates but did not affect the lag phases. The operational oxygen concentration in the originating full scale plants strongly affected the length of the lag phase, which could be attributed to different species of Nitrospira spp. detected by DGGE and sequencing analysis. |
| Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut IWAR - Wasser- und Abfalltechnik, Umwelt- und Raumplanung 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut IWAR - Wasser- und Abfalltechnik, Umwelt- und Raumplanung > Fachgebiet Abwasserwirtschaft |
| Hinterlegungsdatum: | 11 Apr 2018 08:47 |
| Letzte Änderung: | 03 Jun 2018 21:28 |
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