Biodiesel from sewage sludge within pennies a gallon of being competitive

Existing technology can produce biodiesel fuel from municipal sewage sludge that is within a few cents a gallon of being competitive with conventional diesel refined from petroleum, according to an article in ACS' Energy & Fuels, a bi-monthly journal. Sludge is the solid material left behind from the treatment of sewage at wastewater treatment plants.

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