POWER!!!! Fortescue Future Industries, page-5779

You said we are replacing one pollutant (NO) with another and the other pollutant that would come from using 'bunker Oil' would be the other pollutant and that would be for you Co2!
If you mean Nitrous Oxide then that is laughing gas and the laugh is on you! But there are various forms of 'nitrogen oxides' (NOx) usually used to include two gases-nitric oxide (NO), which is a colourless, odourless gas and nitrogen dioxide (NO2), which is a reddish-brown gas with a pungent odour.
Nitrification and denitrification are the two main ways that microbes produce N2O. Nitrification and denitrification are both stimulated by nitrogen (N) fertilization. Nitrification refers to the conversion of ammonia/ammonium (NH3/NH4+) into nitrate (NO3-). This conversion is performed by Nitrifying microbes. These microbes consume ammonia/ammonium and “breathe” oxygen. Microbes are not able to convert ammonia/ammonium into nitrate at 100% efficiency, and some N is lost as N2!
However, the Nitrogen required for plant growth comes in the form of NO3, which is Nitrate - Nitrate often comes down in rainfall during thunderstorm activity other wise soil organisms (various Nitifying Bacteria) are capable of converting N to NO to NO2 and then the form that plants can use which is the Nitrate form NO3! So in essence Ammonia is a fertilizer but has to be converted by Bacterial action in the soil during the Nitrification process by the Nitrifying Bacteria into a form which can be used by plants. Ammonia is the slow release form! Nitrate is the active form (NO3)