Document Type : Review article
Department of Chemical engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran
In recent years, much attention has been paid to the conversion of biomass to bioethanol. Biological energies are renewable fuels with minimal pollution and play an important role in reducing greenhouse gas pollution. One of them is bioethanol, which is obtained from fermentation operations. The world's attention to the use of it as an energy source is focused on reducing the cost of production and increasing the efficiency of the ethanol industry. Ethanol or ordinary alcohol with the formula C2H5-OH can be used with cheap or inexpensive cellulosic sources, Such as straw, wood chips, agricultural residues, or relatively valuable carbon sources such as sugar beet molasses or sugarcane molasses, or quite valuable carbon sources such as sugar and starch. Agricultural waste is mainly composed of cellulose. In this paper, while introducing the sources of bioethanol production, its economic and environmental justification is used and its use as a green fuel in cars is discussed.