10/31/20071Disadvantages of EthanolThe energy to produce ethanol is greater than the energy the is produced form burning ethanol.Eli t Did Pit lf Cll U iitEcologist David Pimentel of Cornell UniversityGeo-engineer Tad Patzek of the University of California at BerkeleyPimentel’s Findings1.An acre of U.S. corn yields about 7,110 lbs for processing into 328 gallons of ethanol.2.Energy economics gets worse at the processing plantBTU – British Thermal Unit – unit of energy
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10/31/20072Pimentel’s Findings3.Ethanol from corn costs about $1.74 per gallon, while production of a gallon of gasoline is $0.95.4.Most economic analysis of corn-to-ethanol production overlook the cost of environmental damages.Pimentel’s Findings5.Approximately $1 billion a year in current federal and state susidies for ethanol production6.The average U.S. automobile travels 10,000 miles a year. If it used pure ethanol