Biodiesel is a renewable energy source, it is a renewable diesel fuel made from plant oil crops, wild oil plants and aquatic plant oils such as engineered microalgae, as well as animal grease and restaurant waste oil through transesterification process, which is a high quality substitute for petroleum diesel. Biodiesel is a typical green energy, and the vigorous development of biodiesel has important strategic significance for sustainable economic development, promoting energy substitution, reducing the pressure on the environment and controlling urban air pollution.

Biodiesel is obtained by transesterification reaction of oil and fat as raw material with methanol plus alkaline catalyst. The glycerol produced by the reaction is a by-product.

OHSY biodiesel separator wich is popular used for extraction, purification in the fields of biodiesel, vegetable oil & biofuels etc .