Biodiesel is a biodegradable, combustible liquid fuel derived from new or used vegetable oils.The diesel engine was invented by Dr. Rudolf Diesel in the late 1800s. Dr. Diesel designed the engine to run on a wide variety of fuels, including vegetable oil. When he introduced his engine at the World Exhibition in Paris in 1900, it ran on 100 percent peanut oil.

The early years of Biodiesel started way back in 1853 with E. Duffy and J. Patrick\'s (both scientists) idea of subjecting vegetable oil to a transesterification process. This process enabled the scientists to obtain a substance that we know today as Biodiesel. However, the biodiesel that they produced did not find solid application and use until the invention of a fully working diesel engine.

This can be attributed to Rudolf Diesel who invented the diesel engine by using an iron cylinder connected to a flywheel. Diesel demonstrated the ability and potential of his diesel engine on August 10, 1883 at Augsburg, Germany. Although his simple engine used the biofuel peanut oil instead of the type of biodiesel Duffy and Patrick had produced, Diesel\'s engine paved the way for biodiesel\'s use in the automotive industry.

Credit goes to biodiesel engine rudolf diesel in 1894, invented to run on hempseed oil

I don\'t know who invented Bio-diesel but the concept of using bio-diesel was first initiated by Rudolf Diesel, who invented diesel fuel.

Ridolf diesel in 19th century