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Oxygen-limited nitrogen removal in a lab-scale rotating biological contactor treating an ammonium-rich wastewater

(2002) WATER SCIENCE AND TECHNOLOGY. 45(10). p.357-363
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Abstract
A lab-scale Rotating Biological Contactor (RBC) was operated with the purpose of oxygen-limited (autotrophic) nitrification-denitrification of an ammonium-rich synthetic wastewater without Chemical Oxygen Demand (COD). Based on the field observations that RBCs receiving anaerobic effluents come to anoxic ammonium removal, the RBC was inoculated with methanogenic sludge. Some 100 days after the addition of the anaerobic sludge to the reactor as a possible means of a rapid initiation of the nitrogen (N) removal process, a maximum ammonium removal of 1,550 mg N m(-2) d(-1) was achieved. Batch tests with N-15 labeled ammonium and nitrite indicated that a large part of that N was removed via oxygen-limited oxidation of ammonium with nitrite as the electron acceptor. The other part was removed via conventional denitrification, presumably with COD released from lysis of cells. Species identification of the most abundant microorganisms revealed that Nitrosomonas spp. were the dominant ammonium-oxidizers in the sludge. Thus far, the molecular characterization of the sludge could not show the presence of Planctomycetes among the most dominant species. Overall this experiment confirms the property of the RBC system to remove ammonium to nitrogen gas without the use of heterotrophic carbon source.
Keywords
OXIDATION, NITRITE, DENITRIFICATION, N-15, oxygen-limited, nitrogen removal, RBC

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Citation

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Chicago
Pynaert, Kris, Stijn Wyffels, R Sprengers, Pascal Boeckx, Oswald Van Cleemput, and Willy Verstraete. 2002. “Oxygen-limited Nitrogen Removal in a Lab-scale Rotating Biological Contactor Treating an Ammonium-rich Wastewater.” Water Science and Technology 45 (10): 357–363.
APA
Pynaert, K., Wyffels, S., Sprengers, R., Boeckx, P., Van Cleemput, O., & Verstraete, W. (2002). Oxygen-limited nitrogen removal in a lab-scale rotating biological contactor treating an ammonium-rich wastewater. WATER SCIENCE AND TECHNOLOGY, 45(10), 357–363. Presented at the 9th World Congress on Anaerobic Digestion.
Vancouver
1.
Pynaert K, Wyffels S, Sprengers R, Boeckx P, Van Cleemput O, Verstraete W. Oxygen-limited nitrogen removal in a lab-scale rotating biological contactor treating an ammonium-rich wastewater. WATER SCIENCE AND TECHNOLOGY. 2002;45(10):357–63.
MLA
Pynaert, Kris, Stijn Wyffels, R Sprengers, et al. “Oxygen-limited Nitrogen Removal in a Lab-scale Rotating Biological Contactor Treating an Ammonium-rich Wastewater.” WATER SCIENCE AND TECHNOLOGY 45.10 (2002): 357–363. Print.
@article{157445,
  abstract     = {A lab-scale Rotating Biological Contactor (RBC) was operated with the purpose of oxygen-limited (autotrophic) nitrification-denitrification of an ammonium-rich synthetic wastewater without Chemical Oxygen Demand (COD). Based on the field observations that RBCs receiving anaerobic effluents come to anoxic ammonium removal, the RBC was inoculated with methanogenic sludge. Some 100 days after the addition of the anaerobic sludge to the reactor as a possible means of a rapid initiation of the nitrogen (N) removal process, a maximum ammonium removal of 1,550 mg N m(-2) d(-1) was achieved. Batch tests with N-15 labeled ammonium and nitrite indicated that a large part of that N was removed via oxygen-limited oxidation of ammonium with nitrite as the electron acceptor. The other part was removed via conventional denitrification, presumably with COD released from lysis of cells. Species identification of the most abundant microorganisms revealed that Nitrosomonas spp. were the dominant ammonium-oxidizers in the sludge. Thus far, the molecular characterization of the sludge could not show the presence of Planctomycetes among the most dominant species. Overall this experiment confirms the property of the RBC system to remove ammonium to nitrogen gas without the use of heterotrophic carbon source.},
  author       = {Pynaert, Kris and Wyffels, Stijn and Sprengers, R and Boeckx, Pascal and Van Cleemput, Oswald and Verstraete, Willy},
  issn         = {0273-1223},
  journal      = {WATER SCIENCE AND TECHNOLOGY},
  keyword      = {OXIDATION,NITRITE,DENITRIFICATION,N-15,oxygen-limited,nitrogen removal,RBC},
  language     = {eng},
  location     = {Antwerp, Belgium},
  number       = {10},
  pages        = {357--363},
  title        = {Oxygen-limited nitrogen removal in a lab-scale rotating biological contactor treating an ammonium-rich wastewater},
  volume       = {45},
  year         = {2002},
}

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