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Films come to life... almost: Power from Leftovers

In a development that reminds me on the face of it of that clip in Back to the Future when they raid the dustbins to fuel Mr Fusion.... the latest development on alternative energy is using your leftover food to generate methane and hydrogen.

In the 90's there was a fad about wormeries. The basic concept is put your food rubbish (highly selective) into a bin with [tiger] worms in and get a form of liquid fertilizer tapped of from the bottom.

The fuel process is similar in the food rubbish is dumped into vat-like generators. Microbes break down the rubbish and in the process the resulting gas, typically methane and hydrogen, can be tapped of from the top and used in specialized vehicles.

For more see the Technology Review.
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