Skip to main content

Anammox Process Inhibition by Oxytetracycline: Short-and Long-Term Experiments and Model Evaluation

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Batch experiments were conducted to investigate the effect of oxytetracycline on anaerobic ammonium oxidation (anammox) process. The short-and long-term effects on anammox activity were studied by measuring ammonium, nitrite, and nitrate concentrations over time. Experiments were conducted at ammonium and nitrite concentrations of 60–90 mg N/L and 60–190 mg N/L, respectively (ammonium:nitrite ratio from 1:1–1:2.25), oxytetracycline concentrations of 23–100 mg/L, and biomass concentrations of 300–800 mg/L. In the short-term study, anammox activity was inhibited by all oxytetracycline concentrations studied. However, daily addition of oxytetracycline to a concentration of 5±3.5 mg/L in the anammox sequencing batch reactor completely inhibited anammox activity in the fifth week. Fluorescent in situ hybridization was used to identify autotrophic ammonium oxidizing bacteria (Nitrosomonas spp., Nitrobacter spp., Nitrospira spp., Candidatus Brocadia anammoxidans, and Candidatus Kuenenia stuttgartiensis). The population of anammox culture was significantly decreased while Nitrosomonas spp. and Nitrospira spp. increased in the fifth week compared with the first week of experiment. A not-competitive model fit the anammmox inhibition data at oxytetracycline concentrations of 0–100 mg/L quite well with V max of 0.0435 mg N/mg VSS-hr and Ki of 54.66 mg/L.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: Anammox; Inhibition; Oxytetracycline; model evaluation

Document Type: Research Article

Publication date: 2011-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more