Friday, August 31, 2007

Ethanol And Biodiesel From Crops Not Worth The Energy

Unique hydrodynamic technology A cost-efficient turn-key solution www.biodieselmach.com renewable energy 2007 the year for your own biogas facility, our turnkey-construction www.luethe-heide.de "There is just no energy benefit to using plant biomass for liquid fuel," says David Pimentel, professor of ecology and agriculture at Cornell.... In terms of energy output compared with energy input for ethanol production, the study found that: * corn requires 29 percent more fossil energy than the fuel produced; * switch grass requires 45 percent more fossil energy than the fuel produced; and * wood biomass requires 57 percent more fossil energy than the fuel produced. In terms of energy output compared with the energy input for biodiesel production, the study found that: * soybean plants requires 27 percent more fossil energy than the fuel produced, and * sunflower plants requires 118 percent more fossil energy than the fuel produced.

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