Comparative Assessment of Polycyclic Aromatic Hydrocarbons and Toxicity in a Diesel Engine Powered by Diesel and Biodiesel Blends with High Concentrations of Alcohols

Higher carbon alcohols such as n-propanol, n-butanol, and n-pentanol that can be produced from biomass used alternative fuels in diesel engines. These mix with both fuel biodiesel without any phase separation. Currently, unregulated emissions toxicity total polycyclic aromatic hydrocarbon (PAH) the use of these are not monitored. Investigating effects increasing concentration for a engine on PAH will contribute to protection environment extend engine’s operating life. In this study, adding 35% (by volume) n-butanol were compared. emission biodiesel, mixture containing stood out compared other mixtures decrease 39.17%. higher alcohol-diesel mixtures, highest reduction was observed 80.98%. With respect toxic emissions, very close values obtained blends up 94.15%, although showed maximum 84.33% blends. All reductions also prevented formation high-cycle PAHs. The results high mixing ratio contributed improvement properties an increase fuel.