Biodiesel FAQ

Biodiesel FAQ >> Biodiesel Benefits
Biodiesel Benefits
Protects Public Health and the Environment

Using Biodiesel in a conventional diesel engine substantially reduces the emissions of unburned Hydrocarbons, Carbon Monoxide (CO), Sulphates, polycyclic aromatic hydrocarbons, nitrated polycyclic aromatic hydrocarbons, and particulate matter (PM). The reductions increase as the amount of Biodiesel blended into diesel fuel increases. B100 provides the best emission reductions, but lower-level blends also provide benefits. Using Biodiesel also reduces greenhouse gas. For example, B100 use reduces carbon dioxide emissions by more than 75% compared with petroleum diesel. Using B20 reduces carbon dioxide emissions by 15%.

Improves Engine Operation

Biodiesel improves fuel lubricity and raises the cetane number of the fuel. Diesel engines depend on the lubricity of the fuel to keep moving parts from wearing prematurely. Federal regulations reduced sulfur in diesel fuel to 15 ppm a few years ago, which resulted in reduced lubricity of petroleum diesel. Diesel specification ASTM D975 was modified to require lubricity; Biodiesel provides adequate lubricity to meet this requirement at blends as low as 1%.

Provides Safety Benefits

Biodiesel is nontoxic, so it causes far less damage than petroleum diesel if spilled or otherwise released to the environment. It is also safer than petroleum diesel because it is less combustible. The flashpoint for Biodiesel is higher than 150°C, compared with about 52°C for petroleum diesel. Biodiesel is safe to handle, store, and transport