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JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, vol.90, no.1, pp.72-79, 2015 (SCI-Expanded)
BACKGROUNDThis work evaluated the kinetics of stepwise ammonia oxidation, separately accounting for ammonia oxidizers (AOB) and nitrite oxidizers (NOB) in an enriched nitrifying microbial culture. This culture was sustained in a fill and draw reactor fed with 50mgNL(-1) of ammonia together with limited organic substrate. Batch experiments were started with the enriched biomass and the same ammonia feeding to monitor profiles of oxygen uptake rate and resulting nitrogen fractions.