How do denitrification units reduce nitrogen oxide emissions?

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New York City skyline tinted orange from wildfire smoke. — air pollution control Even something as simple as breathing can get complicated.

Denitrification units reduce nitrogen oxide emissions by altering the chemical composition of the gas through a catalytic reaction. Within these units, nitrogen oxides are reacted with ammonia or urea to convert them into nitrogen gas, which is a harmless component of the atmosphere.1

This process is a critical component of flue gas treatment, a system designed to mitigate the environmental impact of burning fossil fuels at industrial facilities and power plants. By effectively transforming nitrogen oxides before they are released, these units help prevent the formation of smog and reduce respiratory irritation caused by these pollutants.1