Make diesel fuel

Posted on March 1, 2010


1. Remove all waste products in your vegetable oil. You can do this with a spoon, fork, spatula or fry-oil filter.
2. Purify the filtered vegetable oil by heating it to at least 450 degrees. Once the water rises to the top, remove it. Some purists do not bother with this step, but oil and water do not mix; therefore, removing water makes sense.
3. Perform titration to determine the amount of lye needed to create the fuel. This is the most difficult step and one that requires the most accuracy. Wear proper protective equipment, including gloves and eye-wear, as lye can burn. Therefore, Lye must be kept dry, stored in an airtight container and kept in a cool place, away from water. Start by mixing 1 gram of lye with 1 liter of distilled water. Once dissolved, set it aside. In a separate container, mix 10 milliliters of rubbing alcohol with 1 milliliter of the filtered vegetable oil. Now add the dissolved lye into the oil and alcohol, mixing 1 milliliter at a time. Constantly test the mixture for its PH level, using litmus PH paper or PH meter. Ensure that you mix the test solution thoroughly before testing. The ideal PH level s between 8 to 9. PH paper will turn pink when the level is correct. The best way to add the mixture is to use either an eyedropper or syringe.
4. Calculate the amount of lye needed. Although most self manufacturers of home diesel have estimated that it takes between 6 to 7 grams of lye per liter of oil, you will want to make the calculations for yourself. Multiply the amount of lye solution times the amount of oil you wish to convert. If it took 4 grams of lye to get the PH level to 9, and you want to convert 200 liters of oil, then multiple 4.0 by 200 liters, which equals 800 grams of lye needed.
5. Using a blender, mix the lye with methanol. Mix enough for a small test batch. Mixing methanol with lye creates sodium methoxide, which can be toxic. Again, wear proper eye protection and clothing
6. Add 1 liter of the vegetable solution. Remember your measurements from the previous mixture and blend no more than 15-20 minutes. Keep in mind that too much water in the vegetable oil will create a soap “layer“ that is hard to remove
7. Prep the sodium methoxide. Many experts insist that 20 percent is the average amount of methanol needed. Mix the methanol with the lye. You have just created sodium methoxide. It is imperative that you wear a respirator when mixing these two chemicals as they are highly toxic. If the solution gets on your skin, wash immediately with water.
8. Now heat up the vegetable oil. Once the oil reaches 150 degrees, add the sodium methoxide. Continue the mixing for at least 30 minutes. After the mixture is fully mixed, let it sit for eight hours. This will allow the “fuel” to settle and allow any “soapy” residue to surface
9. Finally wash your fuel. Your newly created fuel needs to be washed from any soap deposits and residue that have amassed. The simplest way to do this is by using water, spreading it in equal amount on the surface of the fuel. The water will emulsify the glycerin particles and sink to the bottom. At this point, let it sit 12 hours. If needed repeat the process until the water is completely drained off. To ensure the drainage, you can heat the diesel fuel for about 20 minutes to evaporate any residual water. Now you are ready to go.
From eHow

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