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Why are ammonia and urea used in denitrification units?
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air pollution control
Even something as simple as breathing can get complicated.
In the context of air pollution control, denitrification units are used to treat flue gas by altering the chemical composition of nitrogen oxides. Ammonia and urea are utilized in these units as reagents to facilitate a catalytic reaction that converts harmful nitrogen oxides into harmless nitrogen gas.1
This process is essential because nitrogen oxides, if released into the atmosphere, can irritate human lungs and contribute to the formation of smog. By employing these substances, industrial facilities can effectively reduce the emission of these pollutants, thereby protecting air quality and public health.1