[Ethanol] delivers 25 percent more energy than is used (mostly fossil fuel) in producing it, though much of that 25 percent energy dividend comes from the production of an ethanol byproduct, animal feed.
But the net energy gain is much higher -- 93 percent -- from biodiesel fuel derived from soybeans. And alternative crops such as switchgrass or mixed prairie grasses, which can grow on marginal land with minimal input of fossil fuel derived fertilizers and pesticides, offer the best hope for the future, according to the researchers.
Friday, July 28, 2006
Another Study Showing Biodiesel Trouncing Ethanol
via AutoBlogGreen -> RenewableEnergyAccess.com - Biodiesel Edges Out Ethanol