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Could food waste power our cities

zdnetZDNet, “Could food waste power our cities?”  by Julie Mehta

 

In two giant airtight vats at Harvest Power’s Energy Garden in central Florida, quadrillions of microorganisms are feasting on orange peels, wilted lettuce, burnt bread crusts, and other food discarded by humans. In less than a month, these ravenous creatures consume waste that would have taken years to decompose in a landfill.

Better yet, they release immense amounts of gas — biogas, to be exact. This heady mix of roughly 60 pecent methane and 40 percent carbon dioxide is fed into generators to produce electricity to help power area businesses.