Sentences with phrase «pollution during the combustion»

The reference to «clean coal» was somewhat unclear in this context, because clean coal refers to attempts to recapture carbon released when coal is burnt or to otherwise reduce coal pollution during the combustion process.

Not exact matches

Human emissions however are on the decline in many countries due to more strict pollution controls on power plants like burning low - sulfur fuel and technological advances to remove it during and after combustion.

Tar balls from wood combustion were also observed, especially (~ 5 %) during the LRT pollution episode.