Researchers at the University of Minnesota have developed a system for converting ethanol into biofuels using available waste ##water from water treatment facilities . The project — which was funded by grants from the Legislative - funded Commission on Minnesota fuels , Metropolitan Council Environmental Service , MnDRIVE and CFANS Center for recycling — found that up to 68 % of scum collected could be made into ethanol . This equates to some 140,000 gallons of the fuel , or $ 500,000 to $ 600,000 in annual costs .
Researchers at the University of Minnesota have developed a system for converting scum into biofuels using available waste heat from water treatment facilities. The project — which was funded by grants from the Legislative-Citizen Commission on Minnesota Resources, Metropolitan Council Environmental Service, MnDRIVE and CFANS Center for Biorefining — found that up to 68% of scum collected could be made into biodiesel. This equates to some 140,000 gallons of the fuel, or $500,000 to $600,000 in annual profits.