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A supermarket chain in the UK announced today that it’s going to power one of its stores entirely off food waste. It’s an attractive solution to two of the most gnawing sustainability concerns: waste and energy.
A Sainsbury’s in Cannock, a town in the West Midlands, will get all of its electricity from food waste through a process called anaerobic digestion. The process is pretty much what it sounds like: waste food is “digested” by microorganisms in huge tankers sealed off from the air, which Sainsbury’s compares to a human stomach.
Biffa, the waste management company working with the supermarket, explains that the waste is broken down into a slurry that degrades into an energy rich biogas, a mixture of methane and carbon dioxide.
More: This British Supermarket Will Be Powered Entirely by Its Own Food Waste | Motherboard
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