The document discusses producing biodiesel from waste cooking oil through a process of esterification and transesterification. Waste cooking oil is converted into biodiesel and glycerin in a two step chemical reaction using methanol and an acid or base catalyst. Producing biodiesel from waste cooking oil provides an alternative fuel source and reduces toxins from improper oil disposal. The document also notes factors to consider for the biodiesel reaction and compares biodiesel to petroleum diesel.

1. BIODIESEL from waste
cooking oil
A Presentation by
Dipu Saha [1202051]
Abdullah Al Masud [1202019]
Isteaque Ahmed [1202024]
Muzahidul Islam Anik [1202023]

2. Fuels
Solid fuel Liquid fuel Gaseous fuel
Wood, coal, pit, dung Petroleum, Diesel, Gasoline,
Kerosene, LPG, coal tar,
Naphtha, Ethanol
Natural gas, hydrogen,
propane, Methane, Coal Gas,
Water Gas
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3. Fuel consumption
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4. Alternative Fuels
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5. Biodiesel basics
 A biodegradable, combustible fuel made from
vegetable oils and/or animal fats
 Usually done by base‐catalyzed trans‐esterification
of fats/oils (i.e. make a big multi‐chain molecule
into 3 smaller molecules)
 Commercial biodiesel is sold as a “blend” with regular
ultra low sulphur diesel (ULSD) (e.g. B10)
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6. Waste cooking oil(WCO)
 Edible oil after cooking/using produces significant amount
of “Free Fatty Acid(FFA)” which can be converted to
biodiesel.
 Can be found anywhere as household cooking, Restaurants,
Food courts, And many more.
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7. Biodiesel from WCO
Reaction 1: Esterification of FFA(Free Fatty Acid)
FFA
(from
WCO)
CH3OH Ester
Reaction 2: Transesterification reaction
Triglyceride CH3OH
H2SO4
Glycerinbiodiesel
KOH
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8. Biodiesel from WCO(PBD)
Filter waste
oil
Settle out
water
reactor Heat & stir
H2SO4MethanolKOH
Start
processing
Reaction 1 &
2
Settle
Glycerin
Separate
glycerin
Reaction
completion
test
Final drying
cycle
Wash cycle to
remove
methanol
Finished fuel
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9. Factors considering the Biodiesel
Reaction
 Waste oil type: Bacon grease and other solid greases are not acceptable for
biodiesel production since they raise the cloud point and could cause cold
weather problems.
 Restaurant fryer oils: Tend to be high in free fatty acids which results in lower
yields of biodiesel due to soap production during the reaction.
 High water content in the oil: Water impedes the biodiesel reaction resulting in
only partial conversion of the oil to biodiesel.
 The temperature should be lower than 60˚c
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10. Waste disposal & Byproducts
 Waste water from the fuel washing process (approximately 1 gallon of water
for every gallon of biodiesel)
 Glycerine is drained off at the end of the fuel production process
(approximately 1 gallon for every 3 gallons of biodiesel)
 Both the waste water and Glycerine have small amounts of methanol in them.
 Crude glycerine from the biodiesel conversion process has three possible uses:
 Compost accelerator
 Methane booster in anaerobic digesters
 Soap production
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11. Comparison
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12. Comparison
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13. Daphne Utilities, ALABAMA
Soap from recycled cooking oil
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14. Bangladesh perspective
 Bangladesh is a small developing country with huge population
 We are largely dependent on foreign oil. About 93% fuel are imported.
 About 59.60% of the population has access to electricity which
consume large amount of natural gas.
 We should come with renewable and alternative fuel for sustainable
future.
 Govt. has planned to produce 10% of total energy from renewable
alternative energy sources by 2020.
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15. Bangladesh perspective
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16. Conclusion
 Recycling of waste cooking oil
 Making a contribution in diesel consumption
 Reduced toxics emission
 Creating an impact on oil market
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17. THANK YOU
Questions?!
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