Ethanol Production Methods More Efficient Now: Study

PhysOrg.com

May 27, 2010 (PhysOrg.com) -- A new University of Illinois at Chicago study of facilities that produce most of the nation's ethanol found that the energy needed to make a gallon of the corn-based fuel decreased on average by about 30 percent within the past decade.

Steffen Mueller, principal research economist at UIC's Energy Resources Center, surveyed the nation's 150 "dry mill" ethanol plants -- the type that produce about 85 percent of the ethanol for energy use -- between November 2009 and January 2010.

The findings may prove useful to state and federal energy policy makers studying the pros and cons of fuels based on their "full life-cycle" -- the total energy needed to create a fuel compared to its energy output, the greenhouse gases emitted during production, the water used in production, and other factors.

"Policy makers rightfully pay attention to life cycle greenhouse gas emissions of fuels," said Mueller. "Biofuel refineries, including corn ethanol plants, are in a rapid innovation phase."

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