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1
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- (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.
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2
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- 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.
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3
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- BXX with “XX” representing the percentage of biodiesel contained in the
blend→
- (B20 is 20% biodiesel, 80% petroleum diesel)
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4
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- 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
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5
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- Input Levels: Output Levels:
- Oil – 87%
Methyl Ester – 86%
- Alcohol – 12%
Glycerine – 9%
- Catalyst – 1%
Alcohol – 4%
- Nothing is Wasted!
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6
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- Made by chemically altering an organic oil (typically vegetable oil)
- "transesterification”
- Thins down oil to allow it to run in an unmodified diesel engine.
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7
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- 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
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8
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- 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
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9
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- Goal
- Biodiesel as alternative fuel
- Major Role
- Use for the future
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10
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- Present Use, On The Rise
- Can be used in most diesel engines
- Use in the US: only diesels, not hybrids
- B100, B20, B5
- Celebrities
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