Translations:Fertilizer/7/en

The Birkeland–Eyde process was one of the competing industrial processes at the beginning of nitrogen-based fertilizer production. This process was used to fix atmospheric nitrogen (N₂) into nitric acid (HNO₃), one of several chemical processes called nitrogen fixation. The resultant nitric acid was then used as a source of nitrate (NO₃⁻). A factory based on the process was built in Rjukan and Notodden in Norway and large hydroelectric power facilities were built.