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BIO-FUEL AND BIO-DIESEL PRESENTATION
This document discusses different types of biofuels including bioethanol, biodiesel, and biogas. It provides details on their production processes and feedstocks. Bioethanol is produced from sugars and starches via fermentation. Biodiesel is made from vegetable oils or animal fats using transesterification. Biogas is generated from organic waste through anaerobic digestion by bacteria. The advantages of biofuels are provided such as being renewable and reducing greenhouse gas emissions, though high production costs and potential food shortages are disadvantages.
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BIO-FUEL AND BIO-DIESEL PRESENTATION
- 1. Bio fuels An AlternateFuel NIKHIL SHARMA 3RD BE MECHANICAL KARAVALI INSTITUTE OF TECHNOLOGY, MANGALORE
- 2. Introduction ofBiofuels Biofuel feedstock Classification of Biofuels Manufacturing Process of Biofuels Advantages and Disadvantages of Biofuel
- 3. • Biofuel isthe fuel which is produced from organic products and wastes. • The common commercially used biofuels are bioethanol, biodiesel and biomethane. • Bioethanol is made from sugar, algae, wheat and sugar beet • Biodiesel is made from vegetable oil, algal lipids, animal fats • Biomethane can be produced from waste organic material, sewage, agriculture waste and domestic wastes.
- 4. History • In 1890sRudolf Diesel was a first person who made biodiesel from vegetable oil. • In 1970s and 1980s environmental protection agency EPA situated in America suggested that fuel should be free from sulphur dioxide, carbon monoxide and nitrogen oxides. • In 1998 EPA allowed the production of biofuel on commercial level which was the alternative source of the petrol. • In 2010 the production of biofuels reaches up to 105 billion liters worldwide. • In 2011, European countries were the largest that made biodiesel almost about 53%. The international Energy Agency set a goal to reduce the usage of petroleum and coal and will be switched on to biofuels till 2050.
- 5. areca husk CornSugarcane Soyabean Switchgrass Jatropha Camelina Algae
- 6. Cassava Palm oilCertain fungi Animal fat Agricultural wastes sugar root
- 7. Classification of Biofuels Also called conventional biofuels. It includes sugar, starch, or vegetable oil known as advanced biofuels and can be manufactured from different types of biomass. The biomass contains lignocellulosic material like wood, straw and waste plastic Extract from algae mostly marine algae
- 8. Advantages of Biofuelsover Fossil Fuels • Lower emissions Green gas • Renewable • Biodegradable • Safer
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- 11. Bioethanol Bioethanol isproduced by the fermentation of carbohydrate rich source which includes sugar cane, sugar beet, corn etc It is colorless and clear liquid One of the widely used alternative automotive fuel in the world
- 12. Bioethanol Milling ( sugarcanestem & separation of juice and bagasse) Fermentation (conversion of sugar into alcohol, production of ethanol) Distillation (separation of ethanol) Dehydration (azeotropic mixture)
- 13. C12H22O11 + H2OC6H12O6 + C6H12O6 C6H12O6 C2H5OH + CO2 • Fermentation process requires 3 days to complete and is carried out at a temperature of between 250°C and 300°C. Sucrose Glucose Glucose Fructose Ethanol
- 14. Ad-Disadvantages of Bioethanol AdvantagesDisadvantages Ethanol is a renewable resource Large amounts leading to problems such as soil erosion, deforestation. Ethanol burns more cleanly in air than petroleum Typical current engines would require modification The use of ethanol reduce carbon dioxide emissions Expensive
- 16. Biodiesel • Biodiesel, analternative diesel fuel, is made from re- new able biological sources such as vegetable oils and animal fats. • Similar to petroleum diesel fuel in structure (straight chain) and number of carbon atoms (10 to 21) • The Biodiesel can be prepared by Transesterification.
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- 19. Biodiesel from DifferentOil Plant Oil Alcohol Temperature Reaction Time Catalyst Soybean and Castor (Brazil) Ethyl 70 3 Hours NaOH Wastes frying oil Methyl 60 1 Hours NaOH Rapeseed Methyl 60 33 mins KOH Sunflower Methyl 25 45 mins KOH
- 20. Fischer–Tropsch Process inProduction of Biodiesel
- 22. Application of Biodiesel •Railway usage • Aircraft use • As a heating oil • Cleaning oil spills • Biodiesel in generators • Vehicles
- 23. Advantages-Disadvantages of Biodiesel ADVANTAGEDISADVANTAGE Can be used pure biodiesel B100. Biodiesel is significantly more expensive compared to standard diesel Biodiesel has shorter ignition delay compared to standard diesel Biodiesel can release nitrogen oxide which can lead to the formation of smog. Biodiesel has no sulfur content, and so it doesn't contribute to acid rain formation Pure biodiesel has significant problems with low temperatures Biodiesel has good lubricating properties better than standard diesel Food Shortage can be occurred
- 24. Comparison between Bioethanol& Biodiesel Bioethanol Biodiesel Process Fermentation Transesterification Environmental Benefit Both reduce greenhouse gas emissions Compatibility Blended E85 % B100 % Costs Cheaper More expensive Gallons per acre 420 gallons per acre 60 gallons per acre soybeans. Energy provides 93% more net energy per gallon produces only 25% more net energy.
- 26. Biogas • A mixtureof CH4 , CO2 and other gases Gas % Methane 50–75 Carbon dioxide 25–50 Nitrogen 0–10 Hydrogen 0–1 Hydrogen sulfide 0–3 Oxygen 0–2
- 27. Biogas • Biogas isa fuel used as domestic purpose • Obtained from cow manure, fruit and vegetable waste • Biogas is produced by the breakdown of organic waste by bacteria without oxygen anaerobic digestion
- 28. Biogas Two Types ofAnaerobic Digestion • Mesophilic process 25-38°C for 14-30 days • Thermophilic process 50-60°C for 12-14 days • Produced from Anaerobic digestion in Anaerobic Digesters (AD)
- 29. Biogas Plant Stops airgetting into the digester- creates anaerobic condition Gas to kitchen Sludge used as a fertiliser
- 30. Advantages Biogas • Reduceair and water pollution • more environmentally friendly fertilizers • Reduced greenhouse gas emissions • concerns about waste management in the agriculture and food industry • Energy security
- 31. Application of Biogas •Cooking • Lighting • Fuel for engine
- 32. Advantages of Biofuels •Renewable • Reduce Greenhouse Gases • Economic Security • Easy to Source • Lower level of Pollution
- 33. Disadvantages of Biofuel •High Cost of Production • Industrial Pollution • Future Rise in Price • Shortage of Food • Use of Fertilizer
- 34. • Reduce wastes •Cleaner air • New agricultural markets • Improve balance of payments • global warming reduction • Benefit developing nations
Editor's Notes
- #30 The biogas plant has two main parts: A Digester (or fermentation tank) The digester is a cube-shaped or cylindrical waterproof container with an inlet into which the fermentable mixture is introduced in the form of a liquid slurry. The digester is provided with an overflow pipe to lead the sludge out into a drainage pit. A Gas holder The gas holder is normally an airproof steel container that, by floating like a ball on the fermentation mix, cuts off air to the digester (anaerobiosis) and collects the gas generated. The gas holder is equipped with a gas outlet. While the digester is provided with an overflow pipe to lead the sludge out into a drainage pit. Digester reactors are constructed from brick, cement, concrete, and steel.