Identify a method for reducing NOx emissions in combustion processes.

Using low-NOx burners is a highly effective method for reducing nitrogen oxides (NOx) emissions during combustion processes. These burners are specifically designed to minimize the formation of NOx by optimizing the combustion environment. They achieve this through various techniques, such as staging the combustion process, controlling the air-fuel mixture, and ensuring that the flame temperature is kept lower than in conventional burners. By reducing peak flame temperatures and controlling the amount of air introduced into the combustion zone, low-NOx burners significantly limit the production of NOx, which forms at high temperatures when nitrogen in the air reacts with oxygen.

In contrast, implementing higher combustion temperatures typically increases NOx production due to the chemical reactions that occur at elevated temperatures. Reducing air supply to the combustion process may lead to incomplete combustion and higher emissions of other pollutants, such as carbon monoxide or unburned hydrocarbons, rather than effectively addressing NOx emissions. Switching to biomass fuels can have mixed results on emissions and may not specifically target NOx reduction effectively when compared to the precise engineering of low-NOx burners. Therefore, using low-NOx burners stands out as a targeted and efficient solution to reducing NOx emissions in various combustion applications.