How to make and clean biodiesel

There are 3 stages and 16 steps on how to make biodiesel.  I copied and pasted the steps from http://www.ehow.com/how_2046024_make-biodiesel.html to save some time from typing a bunch of pages.
These are the steps:

1

Filter your oil to remove particulates such as bits of burned French fries. Use a series of filter screens. You can buy clean, unused oil if you wish to skip this part of the process.

2

Remove water from the oil by warming it to 60 degrees C and hold it there for 15 minutes. Pour the oil into a settling tank and let it separate for 24 hours. Then drain the water from below or drain the oil from above.

3

Measure your oil precisely, and heat it until all the solids have melted. It is imperative that you know how much oil you are using so that your proportions will be correct with all of the other ingredients.

4

Add 99 or higher percent pure methanol to the oil. Use a ratio of 8 percent methanol to the total amount of oil.

5

Blend the methanol into the oil for at least 5 minutes. The oil/methanol mixture will become cloudy at this stage.

6

Add 1 ml of concentrated (95 percent pure) sulphuric acid for every liter of oil. Sulphuric acid is extremely powerful and dangerous, so take every safety precaution when handling it.

7

Stir the mixture gently for an hour at 35 degrees C. The remove the heat source and continue stirring gently for another 2 hours. Allow it to sit for at least 8 hours or longer.

8

Lightly reheat the mixture if any of it has solidified while it rested. Pour half of a 12 percent volume prepared methoxide mixture into the oil and mix for 5 minutes.

Second Stage to Make Biodiesel

1

Warm the oil mixture to 55 degrees C and keep it at that temperature for this entire stage.

2

Add the remainder of the prepared methoxide and stir it gently.

3

Drain off glycerin, from the bottom of the vessel if possible. Start draining 20 to 25 minutes after the beginning of this reaction.

4

Take samples every few minutes to gauge the progress. When the mixture becomes yellow, which generally happens between 1 ½ and 2 ½ hours, stop mixing and turn off the heat. Settle the mixture for an hour.

Third Stage to Make Biodiesel

1

Prepare your washing water in another vessel. Add 10 percent pure phosphoric acid to the water in the amount of 2 to 3 ml/L. The volume of water should be 33 percent the volume of biodiesel.

2

Add your biodiesel to the washing vessel. Be certain the temperatures of both the water and the oil are similar.

3 Insert an air bubbler, such as an aquarium stone. Allow it to operate for at least 24 hours.

4

Turn off the aerator and allow the mixture to settle and separate for half an hour. The water will settle to the bottom of the vessel and appear white.

5

Drain off the water. Repeat this washing procedure two more times.

6

Remove the biodiesel from the washing vessel. Do not allow it to contact the now separated water, or you will need to allow the fuel and the washing water to separate again.

7

Allow the biodiesel to stand until it clarifies, a process which takes up to three weeks.

8

Place the biodiesel into an appropriate holding tank. Prevent any deposits that accumulate from getting into your vehicle's fuel tank.

9

You have just made biodiesel! Use it in your car, and know that you are doing a good thing for the environment. Enjoy the smell of French fries coming from your tailpipe.
My class is using used vegetable oil that mt friends are getting from the cafeteria kitchen at the end of the day.  There is good news and bad news.  Good news is that the oil is free!....Bad news is that the oil has food particles in them.....My next post will tell how to take these food particles out of the oil.

Nevermind.  My teacher told me I can just edit my blog instead of putting up a new one.

Getting the food particles out of the oil can be very simple if you have the right materials.  You will need a funnel, 2 liter bottle (or anything that can hold at least a liter of oil), and 3 different types of strainers ( a large, medium, and a fine), bucket, friend, and you cant forget the oil.  First yu put the oil into the 2 liter bottle.  Then you have a friend hold the large strainer up over a clean bucket.  Carefully, you then pour the oil onto the the large strainer.  When done discard the food particles.  Then poor the oil into the funnel that is attached to the 2liter bottel.  Then do the same using the meidium strainer.  Then poor the oill into the funnel that is over the 2 liter bottel.  Repeat using the finest strainer that you have.
After you are done look throught you bottle to see if there is any more particles...if there is then you dont have a good enouph strainer.  If the oil is clear then you just cleaned your oil!