From Open Source Ecology
Jump to: navigation, search

"Butanol when consumed in an internal combustion engine yields no SOX, NOX or carbon monoxide all environmentally harmful byproducts of combustion. CO2 is the combustion byproduct of butanol, and is considered environmentally 'green'."

This would be true of any pure hydrocarbon. As far as I know butanol doesn't have major advantages in purification or elimination of sulfur and nitrogen contaminants.