Ethanol is alcohol used in transportation fuels. It is a high octane, liquid, domestic and renewable fuel, produced by the fermentation of plant sugars. In the United States, ethanol is typically produced from the byproducts of corn and other grain products, although in the future it may be economically produced from other biomass resources such as agricultural and forestry wastes or specially grown energy crops. In Iowa, ethanol is produced from corn, at 4 state-of-the-art facilities.
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