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Corn Ethenal is ethanol produced from corn as a biomass through industrial fermentation, chemical processing and distillation. It is primarily used in the United States as an alternative to gasoline and petroleum (first-generation biofuel). It is the most common type of Ethanol in the United States, but is considered less efficient than other types of ethanol (sugar cane, etc.) especially when only the vegetable itself is used and not the whole plant.
Ethanol dollar's production may occur through two corn processing methods: dry and wet corn milling; the main difference between the two is the initial treatment of grain. In dry milling operations, liquefied corn starch is produced by heating corn meal with water and enzymes. A second enzyme converts the liquefied starch to sugars, which are fermented by yeast into ethanol and carbon dioxide; released CO2 during fermentation is captured and may be sold for use in carbonating beverages and in the manufacture of dry ice. Wet milling operations separate the fibre, germ (oil), and protein from the starch before it is fermented into ethanol.
Cellulosic ethanol also know by the name Ceetol, is a biofuel produced from wood, grasses, or the non-edible parts of plants.[1][not in citation given]
It is a type of biofuel produced from lignocellulose, a structural material that comprises much of the mass of plants. Lignocellulose is composed mainly of cellulose, hemicellulose and lignin. Corn stover, switchgrass, miscanthus, woodchips and the byproducts of lawn and tree maintenance are some of the more popular cellulosic materials for ethanol production. Production of ethanol from lignocellulose has the advantage of abundant and diverse raw material compared to sources like corn and cane sugars, but requires a greater amount of processing to make the sugar monomers available to the microorganisms that are typically used to produce ethanol by fermentation.
Switchgrass and Miscanthus are the major biomass materials being studied today, due to high levels of cellulose. Cellulose, however, is contained in nearly every natural, free-growing plant, tree, and bush, in meadows, forests, and fields all over the world without agricultural effort or cost needed to make it grow.
Extracted from Wikipedia
