zainulshahidinqazi
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Mar 07, 2014
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About This Presentation
Biodiesel production from algae........Renewable energy source
Size: 2.8 MB
Language: en
Added: Mar 07, 2014
Slides: 42 pages
Slide Content
Shafiq uz zaman 2011-ch-379 Hamid Mukhtar 2011-ch-373 Zain ul shahidin 2011-ch-337 Kalim ahmed 2011-ch-376 Group members Biodiesel production from algae
Classification of energy Traditional Non Renewable Energy Alternative Oil Gas Coal Renewable Energy Solar Wind Hydro Ocean Geothermal Biomass ENERGY SOURCE Gas Hydrates Nuclear Oil Shale Tar Sands
Biofuels Less common types: Biobutanol Synfuel
Why the Interest In Biodiesel? Renewable Resource with the largest potential to get us off the foreign oil supply National Energy Security is an achievable goal with Algae Oil Environmental Enhancement through Zero Sulfur and the sequestration of CO2 Economics & Job Creation through keeping the production of fuels inside the Pakistan
Introduction to algae fuels
Algae Oil yield Compared to other Feedstocks Comparative Yields Soy Bean 50-65 Gallons Per Acre Per Year Camelina 150-400 Gallons Per Acre Per Year Palm 400-700 Gallons Per Acre Per Year Algae 2,000 to 20,000+ ?? Gallons Per Acre Per Year
Uniqueness of algae fuels Algae fuels Higher oil yield Lesser land requirement food vs. fuel Range of products Adaptability WWT & CO 2 capture
Lesser land requirement Algae is capable of producing 30 times more oil per acre than the current crops now utilized for the production of biofuels. Algae could produce up to 94,000 liters of oil per acre, shrinking land requirements
Adaptability to a range of environment Grown under conditions which are unsuitable for conventional crop production (marine water, wastewater, open ponds)
Solve the food versus fuel problem Does not compete directly with crops grown for food Algae can make use of marine and waster water Some algae can be grown in desert regions Some algae can be grown in ocean environment Does not require expensive nutrients for growing
A wide range of fuel products Algae
Integrated with CO 2 capture
Additional Algae Oil Benefits: Can be Grown anywhere Non-polluting Zero Sulfur Releases Oxygen (can be captured and sold) Eats CO2 (a potentially valuable GHG offset) After the Oil is extracted the remaining presscake ( BioMass ) is a highly valuable product
How Does Algae Produce Oil? Algae is a single cell organism Algae feeds on the Hydrogen from the H2O and the Carbon from the CO2 and through the process of photosynthesis produces Hydrocarbon Chains and releases Oxygen Most strains of the Green and Green-Blue Algae can double their mass every 24hour growing cycle Different strains of Algae produce Algae Oil with slightly different hydrocarbon chains
How to obtain fuel from algae? Picking up the best algae Growing the algae Harvesting Generating the fuel product
Choosing an Algae Important characteristics of Algae High % of total biomass is oil Maintains a high % of oil even under stress Compatible with our regional climate
Where To Grow It Extensions onto our water treatment plants Clean up our waste and generate fuel Agriculture runoff Exploit the county’s many farms and vineyards Water ponds Algae could well grow on salty water as well as soft water
How Is Algae Grown? There are 3 methodologies that are currently being used to grow Algae – with a wide number of variations ! :
1 st Open system
Open Tanks
Pivot Ponds
Open Ponds
Light Pulse Systems
Open Raceway Ponds
2 nd vertical systems ( Vertigrow’s , Hanging Bags)
3 rd Closed systems(photo bioreactor) Also referred as Photo bioreactors(PBR) Tubular PBR Flat plate PBR
Bio reactor Bioreactors provide fast growth of algae with the high contents of oil. Considerably reduces expenditures of labor & eliminates complexities in service. The system can work during long periods without destruction of culture. Light in a reactor is taken as much as it considerably increases its productivity. Self-cleaning Reactors represent closed, controlled, automated systems.
The technological circuit of installation of a bioreactor
d Oil Extraction From Algae
1. Expeller/Press 2. Hexane solvent oil extraction 3. Supercritical Fluid extraction There are three well-known methods to extract the oil from oilseeds, and these methods should apply equally well for algae too:
1.Pressing oil from the algae Dry the algae and press the oil from it. Can retrieve up to 70% of the oil. While drying must prevent the algae from becoming contaminated. Cheapest and simplest method
2.Chemical Oil Extraction Use hexane solvents to remove the oil. Benzene could also be used. Must be careful when using. Removes oil out of almost all things . About 95% of total oil present in algae could be extracted.
3.Super Critical Oil Extraction Zain qazi Most efficient method . Equipment n eed special containment and pressure. Can extract almost 100% oil by itself. Uses carbon dioxide at critical pressure and temperature (CO2 is almost a liquid). Rapid diffusion of the oil.
Product generation via different methods Biodiesel Ethanol Hydrogen Methane Electricity – where algae biomass is directly used for combustion Other hydrocarbon fuel, such as JP-8 fuel, gasoline, biobutanol etc.
Biodiesel from algae Cultivation of Microalgae species Harvesting of Microalgae Extraction of Oil from Microalgae Transesterification Biodiesel
Ethanol from algae Fermentation Algae Biomass Ethanol
Hydrogen(H 2 ) from algae Biomass Gasification Biogas Fermentation Dark Fermentation Steam Reformation H 2
Methane from algae Algae Biomass Anaerobic digestion Methane
Conclusion Even with few challenges taken into consideration, algae biofuel ’s natural advantages look to make it one of the foremost players in the clean energy market Algae biofuel production holds future promise for developing countries. More jobs Energy independence
Cost of the pilot project Aprox 20,000 to 25,000 in pakistani rupees. Which include Algae cultivation requirements Algae drying method Algae oil extraction