Biodiesel

Mono-alkyl esters of long chain fatty acids derived from vegetable oils or animal fats for use in diesel engines. It refers to pure fuel before blending with diesel fuel. Biodiesel blends are denoted as, "BXX" with "XX" representing the percentage of biodiesel contained in the blend (ie: B20 is 20% biodiesel, 80% petroleum diesel).

Authoritative On-line References and Resources

http://www.eere.energy.gov/afdc/fuels/biodiesel.html

Description of Resource

The US Department of Energy's Office of Energy Efficiency and Renewable Energy has an Alternative Fuels and Advanced Vehicles Data Center containing key information on all biofuels.

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