Sentences with phrase «usable energy per»
Led by David Tilman, a biology professor at the University of Minnesota, the research shows that «mixtures of native perennial grasses and other flowering plants provide more usable energy per acre than corn grain ethanol or soybean biodiesel and are far better for the environment,» according to a release from the University of Minnesota.
https://news.mongabay.com/ Not exact matches
«This means that the amount of carbon dioxide it releases per unit of usable energy that it produces is half that of what a conventional engine emits.»
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!
Algae is extremely attractive as a natural resource for biofuel production because of its tremendous efficiency at conversion of sunlight into a usable biofuel, up to 30 times more energy per acre than terrestrial crops.