List of Acronyms AD anaerobic digestion ADM Archer Daniels Midland A/E acid/enzymatic AFDC Alternative Fuels Data Center ASTM ASTM International ATJ alcohol-to-jet B5 5% biodiesel, 95% petroleum diesel blend B20 20% biodiesel, 80% petroleum diesel blend B100 pure biodiesel BETO Bioenergy Technologies Office Btu British thermal unit CAFE Corporate Average Fuel Economy CHP combined heat and power DOE U.S. Department of Energy E10 10% ethanol, 90% gasoline blend E15 10.5%-15% ethanol and gasoline blend (approved for use in MY 2001 and newer vehicles) E85 high ethanol blend between 51% and 83% ethanol, depending on season and geography E100 neat ethanol EIA U.