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The Effect of Natural Gradients on the Net Energy Profits from Corn Ethanol

Energy Bulletin - found this 1/14/2009 on netenergy.theoildrum.com

Scaling biofuels from the level of the laboratory or pilot-plants to commercial production is the Achilles’ Heel of almost all biofuels. One major problem is that biofuels use feedstocks that are invariably less energy dense than their fossil fuel counterparts. For example, there are ...