The nature of interaction between immobilized nitrification and denitrification bacteria

E. Kotlar, B. Tartakovsky, Y. Argaman, M. Sheintuch*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

21 Scopus citations


In this work, we pursue the investigation of a nitrogen removal system, which utilizes coupled reaction of nitrification and denitrification in a mixed immobilized cell culture. A systematic comparison of the coupled nitrification-denitrification system with the nitrification process is performed and the interaction between the populations is discussed. The experiments have been performed in sequencing batch reactors loaded with alginate- or agarose-immobilized cells. Measurements of ammonium, nitrate, and nitrite concentrations have demonstrated that the nitrification rates are higher in the mixed-culture system than in the nitrification process. No build-up of nitrates or nitrites in the mixed-culture system have been observed.

Original languageEnglish
Pages (from-to)251-258
Number of pages8
JournalJournal of Biotechnology
Issue number3
StatePublished - 15 Nov 1996
Externally publishedYes
EventProceedings of the 1995 Workshop on Environmental Biotechnology -
Duration: 28 Nov 199528 Nov 1995


  • denitrification
  • immobilized cells
  • nitrification
  • reaction coupling


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