By Wynell Graves
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This mixture may also not be purified by simple distillation, as it forms an azeotropic mixture. Methanol and ethanol Ethanol used as a fuel. Methanol and ethanol can both be derived from fossil fuels, biomass, or perhaps most simply, from carbon dioxide and water. Ethanol has most commonly been produced through fermentation of sugars, and methanol has most commonly been produced from synthesis gas, but there are more modern ways to obtain these fuels. Enzymes can be used instead of fermentation.
Roads, though actual used of E85 fuel is limited, not only because the ethanol fueling infrastructures is limited, but also because many owners are not aware their vehicle is flex-fuel capable. In the USA there are currently about 1,900 stations distributing ethanol, although most stations are in the corn belt area. One of the debated methods for distribution in the US is using existing oil pipelines, which raises concerns over corrosion. In any case, some companies proposed building a 1,700-mile (2,700 km) pipeline to carry ethanol from the Midwest through Central Pennsylvania to New York.
A theoretically much more efficient way of ethanol production has been suggested to use sugar beets which make about the same amount of ethanol as corn without using the corn food crop especially since sugar beets can grow in less tropical conditions than sugar cane. Most of the ethanol consumed in the US is in the form of low blends with gasoline up to 10%. Shown a fuel pump in Maryland selling mandatory E10. On October 2008 the first "biofuels corridor" was officially opened along I-65, a major interstate highway in the central United States.