Sentences with phrase «ethanol from corn requires»

David Pimentel, a professor of ecology at Cornell University who has been studying grain alcohol for 20 years, and Tad Patzek, an engineering professor at the University of California, Berkeley, co-wrote a recent report that estimates that making ethanol from corn requires 29 percent more fossil energy than the ethanol fuel itself actually contains.

Not exact matches

By comparison, «renewable» and «sustainable» corn - based ethanol requires 2,510 to 29,100 gallons per million Btu of usable energy — and biodiesel from soybeans consumes an astounding and unsustainable 14,000 to 75,000 gallons of water per million Btu!

From 2007 to 2013, corn ethanol interests spent $ 158 million lobbying for more mandates and subsidies — and $ 6 million in campaign contributions — for a fuel that reduces mileage, damages engines, requires enormous amounts of land, water and fertilizer, and from stalk to tailpipe emits more carbon dioxide than gasolFrom 2007 to 2013, corn ethanol interests spent $ 158 million lobbying for more mandates and subsidies — and $ 6 million in campaign contributions — for a fuel that reduces mileage, damages engines, requires enormous amounts of land, water and fertilizer, and from stalk to tailpipe emits more carbon dioxide than gasolfrom stalk to tailpipe emits more carbon dioxide than gasoline.

The United States alone would require six times its arable land — and 75 percent of the world's cultivated land — to supply its needs with ethanol made from corn, according to calculations by Vaclav Smil, an energy expert at the University of Manitoba.

Analysis of the total energy input to produce ethanol from corn show that 29 % more fossil fuel input energy is require to produce one energy unit of ethanol.

And yet the laws require that production from biodiesel, corn ethanol, and advanced biofuels (from switchgrass, etc.) climbs steadily year after year.

• Biodiesel production using soybean required 27 % more fossil energy than the biodiesel fuel produced (Note, the energy yield from soy oil per hectare is far lower than the ethanol yield from corn).

At issue is whether to suspend a five - year - old federal mandate requiring more ethanol in gasoline each year, a policy that has diverted almost half of the domestic corn supply from animal feedlots to ethanol refineries, driven up corn prices and plantings and created a desperate competition for corn as drought grips the nation's farm belt.

To meet some of the higher ethanol production goals would require more corn than the United States currently produces, if all of the envisioned ethanol was made from corn.

Aimed at reducing U.S. reliance on foreign oil, the Renewable Fuels Standard, or RFS, would require 13.2 billion gallons of ethanol to be made from corn this year.