Ethanol is produced from starch-based grains, including corn, barley, grass straw and fast growing poplar trees, and is a replacement or additive for gasoline. Ethanol is made using a process called fermentation.
Biodiesel Powered Bus
Biodiesel, a clean burning, renewable diesel fuel substitute or additive, can be made from oil-seed crops, animal fat or vegetable oil. In the US, farmers grow mostly soybeans for biodiesel, but canola or mustard seed are also viable feedstocks. Used fryer oil can replace about 5% of the diesel fuel used in transportation. Biodiesel is made by chemically reacting lye and methanol with the animal or vegetable based oils and fats.
Planting the biofuel seed