Landfill trash to methane to ethanol--a fuel cycle

There are now three landfills in America that supply methane to a nearby ethanol refinery. The newest is in Sious Falls, South Dakota. Methane is pumped ten miles from the city landfill to an ethanol refinery using wood pulp. The federal EPA is a co-sponsor of the partnership between the city landfill and the private ethanol refiner.