Ammonia oxidation of Nitrosomonas is the first step of nirification. Interesting dependency of oxidation rate on temperatur and pH value, that influence the availability of the substrate ammonia, are shown.

To Article: nitri.pdf

Groeneweg, J., Sellner, B. & Tappe, W. 1994: Ammonia Oxidation in Nitrosomonas at NH3 Concentrations near Km: Effects of pH and Temperature. Wat. Res. 12: 2561 - 2566.