Biodiesel is one of the biofuels that can be used to meet the energy needs of society. For example, ethanol is a very common biofuel produced from raw sugar cane, potato, corn, and manioc. But biodiesel is not ethanol because ethanol is a renewable biofuel for gasoline engines.The interest in biodiesel increased due to rising fuel prices, the need for energy independence (biodiesel can be generated from domestic sources) and the need for environmentally friendly energy sources.In this book, the reader will learn how to use the most common vegetable oil sources and transform them into fuel, by understanding the chemical processes and equipment involved, all with an aim in safety and security.