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How algae fuel works


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How algae fuel works

  1. 1. How Algae Fuel Works<br />
  2. 2. Open Pond Growing<br />The most natural method for growing algae that will be used to produce algae fuel is open-pond growing<br />Open ponds are able to produce the greatest amount of algae in hot and sunny conditions<br />Pros:<br />Most natural and least invasive method<br />Cons:<br />Bad weather conditions slow growth<br />Contamination from other living things in pond<br />It is hard to keep the water at the temperature it must be for the algae to grow<br />
  3. 3. Vertical Growth<br />A quicker and more efficient method of producing algae is vertical growing<br />Algae are put in clear plastic bags to allow sunlight on both sides<br />Bags are put in tall piles and shielded from the rain<br />Pros:<br />Faster and more efficient than open-pond growth<br />Algae won’t be contaminated<br />Cons:<br />It is hard to keep the water at the temperature it must be for the algae to grow<br />
  4. 4. Closed-Tank Bioreactors<br />For the fastest algae production, big, round barrels can grow algae indoors in closed-tank bioreactors<br />The algae can be controlled into growing at the highest speed possible<br />It is able to be harvested every day<br />Pros:<br />Large production of algae, which means more oil for biodiesel<br />Good weather conditions for algae growth<br />Plants can be built near energy plants in order to capture extra CO2 that would have polluted the air<br />
  5. 5. Fermentation<br />A modification to the closed-tank method of algae growth is called fermentation<br />The algae are grown in closed containers and supplied with sugar to eat, which speeds their growth<br />Pros:<br />All weather and environmental conditions can be kept the same<br />Algae can be grown anywhere in the world<br />Cons:<br />There are problems with finding enough sugar to use this process<br />
  6. 6. Extracting Oil from Algae<br />After producing the algae, a few different methods can be used to extract the lipids(oils) from the algae<br />The product of this is Green Crude<br />
  7. 7. Oil Press<br />The easiest and most common process of extracting oil from algae is the oil press<br />This method can remove up to 75% of the oil in the algae simply by pressing it<br />This is the same technique an olive press uses<br />
  8. 8. Hexane Solvent Method<br />The 2-step process that removes up to 95% of oil from the algae is called the hexane solvent method<br />First, the oil press method is used<br />Next, the remaining algae is combined with methane, filtered and cleaned so that no chemical remains in the oil<br />
  9. 9. Supercritical Fluids Method<br />CO2 is used as the supercritical fluid to remove up to 100% of the oil from algae in the supercritical fluids method<br />The CO2 is put under pressure and heated so that it is changed into a liquid, as well as a gas<br />The CO2 is then combined with the algae, making it entirely turn into oil<br />This is a less common method because there is extra labor and equipment need<br />
  10. 10. Green Crude<br />The Green Crude produced from algae can be processed in a refinery the same way conventional oil is<br />It can be made into gasoline, diesel, and jet fuel, the main fuels needed in society<br />
  11. 11. Transesterification<br />Once the oil has been taken out, it is treated with fatty acid chains in a method called transesterification<br />This process includes a catalyst (i.e. sodium hydroxide), which is combined with an alcohol (i.e. methanol) <br />This will produce a biodiesel mixed with a glycerol (algae biodiesel fuel)<br />
  12. 12. Cars Running on Algae Fuel<br />The final product in the algae fuel process will be a Drop-in replacement fuel which is ASTM certified Gasoline, x26 Jet fuel<br />
  13. 13. Turning Algae into Biodiesel<br />
  14. 14. Why Algae?<br />Source of crude oil. The regular crude oil we use today was originally formed from algae that bloomed millions of years ago<br />Helps climate change. Absorbs about 13-14 kg of CO2 for every gallon of Green Crude grown<br />Easy to grow. Algae can grow rapidly, especially in salt water in the desert.<br />
  15. 15. REVIEW of Algae to Biofuel Process<br />Algae (Green Crude) is grown from CO2 and sunlight<br />Algae is harvested and the oil is removed<br />Algae is refined (transesterification) in the same way as conventional oil<br />Drop-in Gasoline, Jet Fuel, and Biodiesel is produced <br />