> AFAIK, ... combusting with air will always lead to some oxides of nitrogen appearing in the output. I was curious so I did a search. I know this is a problem

> AFAIK, ... combusting with air will always lead to some oxides of nitrogen appearing in the output. I was curious so I did a search. I know this is a problem with internal combustion engines which operate under higher pressure (not sure about temperature.) There were a lot of hits for "do gas turbines produce nox", many of which were about dealing with the problem.