Nitrogen oxides (NOx) is a common term for nitrogen oxides N2O, NO, N2O3, NO2 and NO3 and is a chemical compound of oxygen and nitrogen that is formed during the combustion of fuel and organic material at high temperatures. NOx emissions in Norway mainly come from energy production from oil and gas, land-based industry, road traffic and shipping.
NOx can be spread over longer distances if it reaches the troposphere within approx. 1 day and is thus not only a local and regional problem, but can be transported across continents with a duration of approx. 5–10 days.
NOx reduction with ozone is nothing more than an oxidation process in several stages.
The reaction happens very quickly and with each step the NO form becomes more and more easily soluble. Eventually it is easy to dissolve in, for example, water, and separate from the exhaust in, for example, a scrubber.
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