Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.1021/acs.est.7b05979 |
| Volltext | Akzeptiertes Manuskript |
| Titel (primär) | Anaerobic ammonium oxidation (anammox) with planktonic cells in a redox-stable semicontinuous stirred-tank reactor |
| Autor | Ding, C.; Enyi, F.O.; Adrian, L.
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| Quelle | Environmental Science & Technology |
| Erscheinungsjahr | 2018 |
| Department | ISOBIO |
| Band/Volume | 52 |
| Heft | 10 |
| Seite von | 5671 |
| Seite bis | 5681 |
| Sprache | englisch |
| Supplements | https://pubs.acs.org/doi/suppl/10.1021/acs.est.7b05979/suppl_file/es7b05979_si_001.pdf |
| UFZ Querschnittsthemen | ProVIS; |
| Abstract | Anaerobic ammonium oxidizing (anammox) bacteria are routinely cultivated in mixed culture in biomass-retaining bioreactors or as planktonic cells in membrane bioreactors. Here, we demonstrate that anammox bacteria can also be cultivated as planktonic cells in a semicontinuous stirred-tank reactor (semi-CSTR) with a specific growth rate μ of 0.33 d–1 at 30 °C. Redox potential inside the reactor stabilized at around 10 mV (±15 mV; vs standard hydrogen electrode) without gas purging. Reactor headspace pressure was used as a sensitive and real-time indicator for nitrogen evolution and anammox activity. The reactor was dominated by an organism closely related to “Candidatus Kuenenia stuttgartiensis” (∼87% abundance) as shown by Illumina amplicon sequencing and fluorescence in situ hybridization. Epifluorescence microscopy demonstrated that all cells were in their planktonic form. Mass balance analysis revealed a nitrite/ammonium ratio of 1.270, a nitrate/ammonium ratio of 0.238, and a biomass yield of 1.97 g volatile suspended solids per mole of consumed ammonium. Batch experiments with the reactor effluent showed that anammox activities were sensitive to sulfide (IC50 = 5 μM) and chloramphenicol (IC50 = 19 mg L–1), much lower than reported for granular anammox biomass. This study shows that semi-CSTR is a powerful tool to study anammox bacteria. |
| dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=20400 |
| Ding, C., Enyi, F.O., Adrian, L. (2018): Anaerobic ammonium oxidation (anammox) with planktonic cells in a redox-stable semicontinuous stirred-tank reactor Environ. Sci. Technol. 52 (10), 5671 - 5681 10.1021/acs.est.7b05979 |
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