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The nitrophosphate process (also known as the Odda process) is a method for the industrial production of nitrogen fertilizers invented by Erling Johnson in the municipality of Odda, Norway around 1927. The process involves acidifying phosphate rock with dilute nitric acid to produce a mixture of phosphoric acid and calcium nitrate.
Erling Bjarne Johnson (7 June 1893 – 5 November 1967) invented the nitrophosphate process in the years 1927-28. The process is recognised internationally as important in the production of fertiliser, but he is little-known in his native Norway.
[12] [13] [14] In 2010 an international report stated: What makes Odda smelteverk so important and central to the application of Norway’s hydro power sites and pioneer chemical industry as a World Heritage Site is the fact that here in an internationally unique way the physical remains of an early chemical production process are still present ...
This attempt failed, and the project was mothballed in 1924. Norsk Hydro did eventually switch to the Haber-Bosch process in 1927, in collaboration with IG Farben. The plants were again redirected to the Odda Process in the 1930s.
A factory based on the process was built in Rjukan and Notodden in Norway and large hydroelectric power facilities were built. [13] The 1910s and 1920s witnessed the rise of the Haber process and the Ostwald process. The Haber process produces ammonia (NH 3) from methane (CH 4) (natural gas) gas and molecular nitrogen (N 2) from the air.
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This page was last edited on 19 December 2012, at 06:17 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
The Ostwald process is a chemical process for production of nitric acid (HNO 3), which was developed by Wilhelm Ostwald (patented 1902). It is a mainstay of the modern chemical industry and provides the raw material for the most common type of fertilizer production, globally (for example, ammonium nitrate , a common fertilizer, is made by ...