Waste to ethanol
A completely different use for municipal solid waste and forestry residue is ethanol. Montreal-based Enerkem is building two commercial-scale plants to take these organic waste products and turn them into ethanol using a process called gasification. The material is fed into a machine like this one and treated with high heat. That breaks most of the material down into a synthetic gas, which can be converted into different chemicals. In August, the company started construction on a facility to treat municipal solid waste in Edmonton, Alberta.
February 21, 2011 4:00 AM PST
Photo by: Enerkem
| Caption by: Martin LaMonica
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