Biodiesel Suppliers Survey
TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
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Biodiesel fuel is manufactured by the transesterification of oils obtained from a variety of virgin and renewable sources and alcohols. Typical feedstocks include rapeseed, soybean, canola, and used cooking oils. Although animal fats also known as tallow oils can be used as a feedstock, there were no manufacturerssuppliers available at the time of this survey. A popular version of this biodiesel fuel is found in the form of B20, which is 20 biodiesel and 80 regular diesel. Vehicles using B20 require no modifications to existing diesel fuel systems, hence the popularity of B20. Biodiesel in general has gained in popularity since the passage of the Energy Conservation and Reauthorization Act of 1998 ECRA. The ECRA was an amendment to Energy Policy Act EPAct of 1992, which mandated the use of alternative fueled vehicles AFVs in all heavy-duty fleets. Development of an ASTM provisional specification i.e. ASIM PS 121 for biodiesel to be used as a blend stock has helped define biodiesel.