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Biodiesel Wikipedia
Biodiesel is a form of diesel fuel derived from plants or animals and consisting of long-chain fatty acid esters.It is typically made by chemically reacting lipids such as animal fat (), soybean oil, or some other vegetable oil with an alcohol, producing a methyl, ethyl or propyl ester.. Unlike the vegetable and waste oils used to fuel converted diesel engines, biodiesel is a drop-in biofuel