Recycling of waste cooking oil

BIODIESEL from waste cooking oil

A Presentation byDipu Saha [1202051]

Abdullah Al Masud [1202019]Isteaque Ahmed [1202024]

Muzahidul Islam Anik [1202023]

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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Fuel consumption

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Alternative Fuels

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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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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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Biodiesel from WCOReaction 1: Esterification of FFA(Free Fatty Acid)

FFA(from WCO)

CH3OH Ester

Reaction 2: Transesterification reaction

Triglyceride CH3OH

H2SO4

GlycerinbiodieselKOH

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Biodiesel from WCO(PBD)Filter waste

oilSettle out

water reactor Heat & stir

H2SO4MethanolKOHStart processing

Reaction 1 & 2

Settle Glycerin

Separate glycerin

Reaction completion

test

Final drying cycle

Wash cycle to remove

methanolFinished

fuel

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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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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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Comparison

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Comparison

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Daphne Utilities, ALABAMA

Soap from recycled cooking oil 13

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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Bangladesh perspective

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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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THANK YOUQuestions?!

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