Use of biofuels
Biofuels

Alcohols, such as ethanol or methanol, have been used worldwide—either in their pure form or blended into gasoline in small or large proportions—in engines designed for them; however, only ethanol is commonly produced from biomass and used on a large scale, with global production reaching 70 Mt in 2013 .

Ethanol and its oxygenated derivatives can be widely used in small proportions, either as a co-fuel or as an additive in...