Biodiesel refers to vegetable oil (such as rapeseed oil, soybean oil, peanut oil, corn oil, cottonseed oil, etc.), animal oil (such as fish oil, lard, butter, sheep oil, etc.), waste oil or microbial oil and methanol or ethanol. A fatty acid methyl ester or ethyl ester formed by the conversion of an ester. Biodiesel is a typical “green energy” with good environmental performance, good engine start-up performance, good fuel performance, wide range of raw materials, and renewable characteristics. Vigorously developing biodiesel has important strategic significance for sustainable economic development, promoting energy substitution, reducing environmental pressure, and controlling urban air pollution.

Biodiesel is a typical “green energy” with good environmental performance, good engine start-up performance, good fuel performance, wide range of raw materials, and renewable characteristics. In recent years, many studies have confirmed that whether it is a small, light diesel engine or a large, heavy-duty diesel engine or a tractor, the hydrocarbons after combustion of biodiesel are reduced by 55% to 60%, the particulate matter is reduced by 20% to 50%, and the CO is reduced by more than 45%. Polycyclic aromatic hydrocarbons are reduced by 75% to 85%. Biodiesel refers to vegetable oil (such as rapeseed oil, soybean oil, peanut oil, corn oil, cottonseed oil, etc.), animal oil (such as fish oil, lard, butter, sheep oil, etc.), waste oil or microbial oil and methanol or ethanol. A fatty acid methyl ester or ethyl ester formed by the conversion of an ester. Vegetable oils and animal fats having fatty acid glycerides of a certain structural symbol (i.e., triglycerides) are generally used as raw materials for biodiesel.