Complete Biogas: Food Waste and Biogas, Part 2

| 9/5/2014 9:14:00 AM

Tags: biogas, food waste, waste management, India, Oregon, David William House,
Feeding an ARTI-style digester with a floating gas holder

Cliff hanger, right? We told you there was a gold mine in back of your local restaurant in part one of this subject series (here), and we waved somewhere toward the direction of using the “found energy” tied up in the carbon bonds of that wasted food for this and that. (We mentioned cooking with that energy, for example.)

So the question is: How? How can we make the energy which is potentially available in food waste into usable energy? Let’s see….

In the developing world, many things happen at the village or household scale. If we cook our own meals using wood that we’ve gone into the forest and gathered, that is a system that has a household scale. (And it would please Thoreau, eh? Wood fire warms you twice, he said.)

But virtually all our systems in the US are industrial scale (that is, Big), including our energy systems (consider those long electric lines on towers marching along the freeway) and this includes the scale at which we waste food. Studies (such as this NRDC study) show that not quite half the food we produce in the US is thrown away.

9/8/2014 3:55:06 PM

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