Presentation on theme: "Rudolf Diesel’s original engine ran on peanut oil. He wanted diesel engines to utilize biomass."— Presentation transcript:
Rudolf Diesel’s original engine ran on peanut oil. He wanted diesel engines to utilize biomass.
Biodiesel is cheaper than petrodiesel in many European gas stations where it’s sold.
Sources of Oil for Biodiesel Grains (like corn) Nuts (like peanuts) Beans Seeds (like Jojoba) Algae
The carbon in biodiesel comes from the air, and so its combustion provides no net addition of carbon dioxide. Fossil fuels come from under the ground, and so their combustion adds carbon dioxide to the atmosphere.
Emissions Benefits Lower CO emission than petro-diesel Lower aromatic hydrocarbons Lower particulates
Algae grown on sewage might be an economical source of biodiesel
Emissions Disadvantages More particulates than gasoline. More nitrogen oxide emission than gasoline or petrodiesel.
VW and some other makers of diesel cars claim that their engines can run on pure biodiesel.
Since biofuels have higher melting points than petrodiesel, some biodiesel equipped cars allow the driver to switch to biofuel after engine heat has melted it.