Anthropogenic nitrogen cycle
Nitrogen use in manufacturing & processing
Blanketing :
Nitrogen gas can be used to flush wine bottles both before and after filling.
https://www.generon.com/nitrogen-for-wine-sparging-bottling-blanketing/
Nitrogen generator in Beverage processing & packaging
On the picture : Juice cartons on packaging production line
The most important use is for fertilizer
Starter fertilizer can enhance growth and yield by improving access of immobile nutrients
Nitrogen and fertilizer
The natural process of fixation of atmospheric nitrogen has been amplified by man through an increasing use of industrial fixation of atmospheric nitrogen.
The Haber-Bosch process
Video to watch :
The modern nitrogen cycle
NH4+ production : 9,5 x 10^12 mol
Fossil fuel combustion : 1.8 x 10^12mol
Anthropogenic sources contribute double the natural rate of terrestrial nitrogen fixation.
Nitrogen and the agro-food system
Why does livestock farming produce large quantities of nitrogen-rich effluents ?
Conclusion
QCM
1) What is the Haber-Bosh process?
A process that transforms air into fertilizer.
A process to fix atmospheric dinitrogen in the form of ammonia.
A process that converts ammonia into nitrate.
A process that permit to have available nitrogen in sufficient quantity to allow its industrialization.
2) What are the anthropogenic sources of the nitrogen cycle?
Fossil fuel combustion
Industrial fixation
Deforestation
Crops and livestock
Building construction
Medias
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