Estimation of the intrinsic maximum substrate utilization rate using batch reactors with denitrifying biofilm: A proposed methodology

Fahid K.J. Rabah, Mohamed F. Dahab, Tian C. Zhang

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

A method for estimation of the maximum substrate utilization rate (q max) using batch reactors with denitrification biofilm was introduced and compared with the traditional method of using batch reactors with suspended growth for qmax estimation. The values of qmax obtained from the suspended-growth reactors (0.69 to 0.71 g N/g volatile suspended solids [VSS]·d) and from the attached-biomass reactors (0.74 to 0.85 g N/g VSS·d) are similar and within the range of the values reported in the literature (0.23 to 2.88 g N/g VSS·d). Therefore, the intrinsic kinetic parameter, qmax, can be obtained using attached-growth batch reactors, if the effectiveness factor, η, is approximately equal to 1 and the bulk concentration of the rate-limiting substrate, C, is much higher than the half-velocity constant, Ks. The attached-growth batch reactor method is unique, because the biomass used in the batch tests is the same as that present in the parent reactor under investigation.

Original languageEnglish (US)
Pages (from-to)887-892
Number of pages6
JournalWater Environment Research
Volume79
Issue number8
DOIs
StatePublished - Aug 2007

Keywords

  • Biofilm
  • Biological treatment
  • Denitrification
  • Intrinsic parameters
  • Kinetics

ASJC Scopus subject areas

  • Environmental Chemistry
  • Ecological Modeling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

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