2. Biodiesel  Refers to fuels containing methyl or ethyl esters.  Clean burning alternative fuel.  Produced from domestic, renewable resources.  Pure state contains no petroleum.

4. Biodiesel (cont.)  Produced in Europe, Asia, and U.S. over the last decade.  Europe is currently world’s largest producer of biodiesel.  Germany has over 1,900 biodiesel fueling stations.  Used for municipal fleets to long-haul trucks.  Off-road machinery for mining, forestry, construction, agriculture and marine industries.  500 major U.S. fleets use biodiesel.

5. Biodiesel (cont.)  Biodiesel is produced from oils such as canola, soy, and palm.  Biodiesel used in diesel engines with little or no modifications.  Ethanol is produced from cereals such as corn and wheat.  Ethanol used in gasoline engines.

6. Biodiesel (cont.)  Biofuels as a group are made from triglyceride oils found in plant oils  Canola, soybean, sunflower, cottonseed  Soybean is currently the leading source of vegetable oil for biodiesel in the U.S.  Biodiesel is made through a chemical process called “transesterification”  Two products left behind  Methyl esters (chemical name for biodiesel)  Glycerin (byproducts used in soaps and other products)

7. Diesel Engine  1893 - Rudolf Diesel invents the diesel engine.  1900 – demonstrated at World Exhibition using peanut oil.  Later modified to use petroleum.  http://www.youtube.com/watch?v=SLekU8 qnRzI http://www.youtube.com/watch?v=SLekU8 qnRzI

9. Biodiesel Blends  Part pure biodiesel and part petroleum diesel.  B100 – pure biodiesel  B20 – 20% biodiesel 80% petroleum diesel.  In warm weather (B20) 20% biodiesel and 80% #2 diesel should be used.  In cold weather operation (B20) 20% biodiesel and 80% #1 diesel should be used.

10. Biodiesel Advantages  Better for the environment.  Less toxic than table salt; biodegradable as fast as sugar.  Decreases our dependence on foreign oil.  Contributes to the U.S. economy.  Can be used in existing engines and fuel injection equipment.  Ignites faster with less engine noise.

12. Biodiesel Disadvantages  Not readily available in the U.S.  Older vehicles may require fuel line upgrades.  In older vehicles biodiesel may free up accumulated deposits and clog filters.  Biodiesel can eat through certain types of rubber.