Nitrogen oxides removal from hydrogen flue gas by direct photolysis.

This paper investigates hydrogen combustion in boilers, which appears to be a more efficient approach compared to fuel cells for heating applications. However, one of the major drawbacks of hydrogen combustion in the presence of air is the formation of NOx. To address this, the authors propose using direct UV light photolysis as an innovative technique to reduce NOx levels in hydrogen flue gases. The method involves constructing a reactor for hydrogen combustion and integrating a UV light source into it. Experimental results indicate that UV light can significantly reduce the concentrations of NO and NOx in exhaust gases. The findings suggest that this technology has potential for use in industrial hydrogen combustion systems, providing an alternative to traditional NOx reduction methods.