DAVID NUNUK / SCIENCE PHOTO LIBRARY DAVID NUNUK / SCIENCE PHOTO LIBRARY
Corn ethanol processing plant. Used corn grain (distillers grain) being loaded onto a truck at a corn ethanol plant in Shenandoah, Iowa, USA. Corn ethanol is a biofuel that is primarily used in the United States as an alternative to gasoline and petroleum. It is produced from corn through industrial fermentation, processing and distillation. This grain is a byproduct of ethanol production and is sold for animal feed. The processing plant shown is operated by Green Plains Renewable Energy.
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