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Producing Biodiesel from Vegetable Oil

Producing Biodiesel from Vegetable Oil. A Lab Activity Your Students Will Love!. All of the information for this activity was found at: www.biodieselcommunity.org Developed by John Jones Glen Rose High School Malvern, AR jcjones@gr1.dsc.k12.ar.us. Heet fuel line heater is 100% methanol.

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Producing Biodiesel from Vegetable Oil

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  1. Producing Biodiesel from Vegetable Oil A Lab Activity Your Students Will Love!

  2. All of the information for this activity was found at:www.biodieselcommunity.orgDeveloped by John JonesGlen Rose High SchoolMalvern, ARjcjones@gr1.dsc.k12.ar.us

  3. Heet fuel line heater is 100% methanol. Roebic Drain Cleaner is 100% sodium hydroxide For lab experiments, this is all you need!

  4. How much lye to use? • Can either use NaOH or KOH • The base amount for NaOh is 5 g per liter • The base amount for KOH is 7 g per liter • Perform titration test – each ml of lye solution that you add, you then add 1 g of lye per liter. Example: If your oil titrates at 3 then you would use 8 g of NaOH (5+3)

  5. 1 liter of virgin canola oil on the left and 1 liter of waste soy oil on the right.

  6. On the right, 5 g of NaOH were added for the virgin oil. The waste oil titrated at 5, so 10 g of NaOH were added. The additional NaOH Is needed to neutralize the fatty acid in the waste oil. Both were mixed into 220 ml of methanol to form methoxide. Methanol usage is based on 22% of oil. (some references use 20%)

  7. The NaOh is dissolved into the methanol to form methoxide. The methoxide is the added to the oil. It does not readily mix together; you must shake it up so that the chemical reaction will take place. Making biodiesel from oil is a chemical reaction process.

  8. After shaking vigorously for about 30 seconds the mixture has reacted. Notice the grayish tint.

  9. The methoxide does not readily mix with the waste oil. Itmust be shook up.

  10. Notice the change in color. The reaction is taking place.

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