Also discussed here: Biofuels increase, rather than decrease, heat-trapping carbon dioxide emissions (ScienceDaily, Aug.25, 2016)
And here: Controversial study claims biofuels aren’t carbon neutral, says it’s much worse than gasoline (ZNE Science, Aug. 26, 2016)
Today we review research into the belief assumed by government policy to justify agricultural subsidies that biofuels (mostly from corn and soy beans) which currently amounts to 14.6 B gallons/year (or 6% of emissions) offset carbon emissions using petroleum products. This belief is based on the supposition that emissions from biofuels balance carbon emissions by absorbing CO2 from the atmosphere during photosynthesis from the new crops. Results indicate that this additional carbon uptake is only 37% of the emissions from biofuels. The conclusion reached is that the rising use of biofuels (which has tripled over the last 10 years) has resulted in net increase rather than a net decrease in carbon emissions.
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