Review the Effect of using Bioetanol Fuel in Internal Combustion Engine to Reduce Toxic Gas Emissions

The increasingly restrictive worldwide emission law necessitates significant efforts to achieve emission quality criteria while increasing combustion efficiency. Fuel ethanol combined with gasoline is one promising approach. Since it can be produced without the use of fossil fuels and has a high octane rating, ethanol is often utilized as an alternative fuel or a valuable additive to gasoline. Therefore, much study has been done on the effects on emissions and engine performance. Rather than using agricultural or woody biomass, many researchers now make bioethanol from industrial, municipal, and herbaceous wastes. The majority of the engine test results demonstrated a notable increase in engine performance and improved combustion properties for bioethanol fuel. Additionally, there was a decrease in the emissions of carbon monoxide and unburned hydrocarbons. On the other hand, there was no significantly appreciable decrease in carbon dioxide or nitrogen oxide emissions. Additionally, unregulated emissions like those of aromatics, acetaldehyde, and carbonyls did not significantly decline.