Notes
Slide Show
Outline
1
What is it made out of?
  • (Pure vegetable oil (Pure Plant Oil), in contrast to waste vegetable oil, is not a byproduct of other industries, and thus its prospects for use as fuel are not limited by the capacities of other industries.
  • Soybean oils are most commonly used, though other crops such as Canola, Peanut, Corn  mustard, palm oil, hemp, and even algae show promises


  • Waste vegetable oil (WVO)
    •  As of 2000, the United States was producing in excess of 11 billion liters of waste vegetable oil annually
    • Mainly from industrial deep fryers in potato processing plants, snack food factories and fast food restaurants.
    • If all those 11 billion liters could be collected and used to replace the energetically equivalent amount of petroleum, almost 1% of US oil consumption could be offset.

2
What is it made out of?
  • Animal fats including tallow, lard, yellow grease, and the by-products of the production of Omega-3 fatty acids from fish oil.
  • Sewage A company in New Zealand have successfully developed a system for using sewage waste as a substrate for algae and then producing bio-diesel.


3
Blends…
  • BXX with “XX” representing the percentage of biodiesel contained in the blend→
  • (B20 is 20% biodiesel, 80% petroleum diesel)


4
Process of making Biodiesel
  • Transesterification
    • Oils and fats are filtered to remove water and contaminants
    • Oil then mixed with alcohol (methanol)
    • Oil molecules broken apart and reformed into methylesters and glycerol, which are seperated and purified
    • Process that leaves behind two products
      • Biodiesel & Glycerin
        • Glycerine used in soaps and other healthcare products
        • Biodiesel thinned enough to run in engines

5
Biodiesel Production
  • Input Levels: Output Levels:
      • Oil – 87%                     Methyl Ester – 86%
      • Alcohol – 12%             Glycerine – 9%
      • Catalyst – 1%              Alcohol – 4%
          •                                Fertlizer – 1%

  • Nothing is Wasted!


6
Production
  • Made by chemically altering an organic oil (typically vegetable oil)
  • "transesterification”
  • Thins down oil to allow it to run in an unmodified diesel engine.


7
Benefits of Biodiesel
  • Environmental
    • Made of Renewable Resources such as corn & soybean
    • Burns up to 90% cleaner, reducing matter in exhaust fumes
    • Reduces carbon monoxide by about 50%, and carbon dioxide by 78%
    • Sulphur dioxide emissions are eliminated
    • Plant-based
    • Ozone-forming potential reduces almost 50%
    • Pleasant smelling (raw and burned)
    • Non-toxic; reduces cancer causing emissions
    • Biodegrades as fast as sugar

8
Drawbacks of Biodiesel
  • Solvency
    • May release deposits accumulated on tank walls or pipes from previous fuel storage; requires a changed fuel filter
  • Cold Weather
    • Start to gel at higher temperatures than diesel fuel
  • Nitrogen Emissions
    • Without additives, tends to increase emissions of oxides of nitrogen (contributor to smog and ozone)
  • Bacteria
    • May cause already growing bacteria to accelerate in growth in fuel tanks
  • Animals
    • May be attracted to the aroma; bite/chew equipment

9
Role of Biodiesel
  • Goal
  • Biodiesel as alternative fuel
  • Major Role
  • Use for the future


10
Where Is It Being Used?
  • Present Use, On The Rise
  • Can be used in most diesel engines
  • Use in the US: only diesels, not hybrids
    • Global Implications
  • B100, B20, B5
  • Celebrities