Fig. 1From: Role of nitrite in the competition between denitrification and DNRA in a chemostat enrichment cultureAmmonium production in the acetate fed chemostat systems, as a percentage of the NOx conversion in time. This includes both dissimilatory and assimilatory production of ammonium. a Ammonium production (open circles) for the varying percentages of NO2 − in the influent nitrogen (dashed line). The other influent nitrogen was nitrate. b Ammonium formation in the enrichment inoculated with activated sludge with nitrite as electron acceptorBack to article page