Waste coffee grounds offer new source of biodiesel fuel

This is pretty sweet news. Assuming that it can be made commercially viable, it’d be great to have a way of squeezing just a bit more goodness from the tons of coffee this nation consumes annually. Oh and the exhaust fumes would smell like Colombian Supremo.  Anything we can do to reduce the use of corn as an ethanol feedstock would be good right about now.

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