A NEW APPROACH FOR THE MEASUREMENT OF DECAY, ACTIVE FRACTION OF BIOMASS AND EXTRACELLULAR POLYMERIC SUBSTANCES IN HYDROGEN-DRIVEN DENITRIFICATION
Authors: Rezania, B.; Oleszkiewicz, J. A.; Cicek, N.
Source: Proceedings of the Water Environment Federation, WEFTEC 2005: Session 21 through Session 30 , pp. 2074-2084(11)
Publisher: Water Environment Federation
Abstract:A new method for measuring the active fraction of biomass, decay coefficient and concentration of extracellular polymeric substances (EPS) was developed for a steady-state culture. The method was used to determine microbial characteristics, decay and yield coefficients in a hydrogen-dependent autotrophic (hydrogenotrophic) denitrification system. It was found that steady-state biomass, operated at 20 day solids retention time, was composed of 41% active biomass, 25.6% cell debris and 33.4% extracellular polymeric substance. Results of 0.041 d−1, and 0.27 mg active biomass per NO3-N were obtained for the decay coefficient and true yield, respectively.
Document Type: Research article
Publication date: 2005-01-01
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