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Bioenergy-Biodiesel

Bioenergy-Biodiesel. Agenda. Why biodiesel? How to make it? Possible sources Transesterification Biodiesel plants Imperium renewables Biodiesel story. Rudolf Diesel (1893).

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Bioenergy-Biodiesel

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  1. Bioenergy-Biodiesel

  2. Agenda • Why biodiesel? • How to make it? • Possible sources • Transesterification • Biodiesel plants • Imperium renewables • Biodiesel story

  3. Rudolf Diesel (1893) “The use of vegetable oils for engine fuels may seem insignificant today,” he argued, “but such oils may become, in the course of time, as important as petroleum and the coal-tar products of the present time."

  4. Energy content Gasoline Ethanol Biodiesel 100% 67% 86%

  5. Biodiesel versus bioethanol (1) ~12 x more (2005) *Europe currently represents 80% of global biodiesel consumption and production

  6. Biodiesel versus bioethanol (2)

  7. Biodiesel • Biodiesel is not the same thing as raw vegetable oil. It is produced by a chemical process which removes the glycerol from the oil. • Biodiesel • Domestic • Renewable • For diesel engines • Derived from oils and fats

  8. Why biodiesel? • Biodiesel • Biodegradable • Non-toxic • Lower gas emission that diesel when burned (reduced green house gases emission by at least 68%) • Commercially available in Europe and US • Low S content • High lubricity

  9. Biodiesel production • Biodiesel is typically produced by a reaction of a vegetable oil or animal fat with an alcohol such as methanol or ethanol in the presence of a catalyst to yield mono-alkyl esters and glycerol, which is removed.

  10. How? • Tranesterification: alcohol + ester → different alcohol + different ester • Base of acid as a catalyst • The oil is mixed with an alcohol, usually methanol or ethanol, and separated into methyl esters (biodiesel) and glycerol.

  11. Transesterification Methyl esters

  12. Biodiesel technology

  13. Possible sources • Vegetable oil (soy, canola, palm, rapeseed, coconut etc.) • Non food plants (jatropha) • Recycled oil (McDonald’s fryer) • Animal fats (fish oil) • Algae

  14. Palm oil (1) • Palm oil plantations-approximately 11 million hectares (2006) in the world • Conversion of tropical forest in Asia into palm oil plantation • Habitat destruction and potential extinction of certain endangered species (e.g. the orangutans in Borneo, the Sumatran tigers and Asian rhinoceros)

  15. Palm oil (2) • Palm oil is derived from the plant’s fruit • A hundred kilograms of oil seeds typically produce 20 kilograms of oil • Crude palm oil is extracted from the yellow parts of oil palm fruit

  16. Algae to biodiesel Pond algae Greenfuels bioreactors

  17. What are algae? • Primitive plants closely related to fungi • No true leaves, stems or root systems • Reproduce by means of spores, cell division or fragmentation.   • “Live" from excess nutrients in the water and sunlight   • Over 17,400 species of algae have been identified and thousands more probably exist • Not all of them produce high% of oils

  18. Jatropha (Jatropha curcas) (1) • Resistant to drought and pests • Grows on marginal lands • India, South Africa, South East Asia • Seeds contain up to 40% oil • Oil in the seeds for biodiesel • Residues for power electricity plants • The plant yields more than • 4x /ha that of soybean • 10x /ha that of corn

  19. Imperium Renewables (1) Imperium Renewables has constructed a new biodiesel manufacturing plant at the Port of Grays Harbor. The facility includes 8 main tanks that can hold 2 million gallons each, and 2 smaller tanks that can hold 500,000 gallons each. The rail line that serves the facility passes through the center of this photo. Imperium Renewables=the largest biodiesel facility in US.

  20. Imperium Renewables (2) • February 24th, 2008 Virgin Atlantic Boeing 747 • 20% biofuel (coconut)+80% standard fuel (1/4 engine) • No modification to the engine • Washington ferries Issaquah, March 2008 • B5 blend of canola biodiesel

  21. Biodiesel cars • The 86% fuel economy compared to 100% gasoline • A smoother running engine due to the cleaning and lubricating properties of the fuel.  • Other benefits • Better smelling exhaust (french fries or a warm waffle iron). • Special materials required for fuel lines, hoses, valves, gaskets • B10, B20….

  22. Bioethanol versus biodiesel • Feedstocks (competition with food industry) • Major producers • Process • Yields • Production facilities

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