Single Stage Base Biodiesel Recipes

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Single Stage Base Biodiesel Recipes

Single Stage Base Recipes

Single Stage Base Processing is the method most often used to make biodiesel. There is no one single recipe that will fit everyone’s needs. That’s because, we make compromises when building our recipe. Quality and Cost are the two major influences the compromise. There are other minor influences like ease of production, safety, time required, feedstock oil type, and processor design. Most people use and have good results with The Standard Recipe. Some engines demand the highest quality biodiesel you can make. If you want to make the highest quality biodiesel possible then follow the ASTM Recipe below. Most of the older IDI diesel engines can run a much lower quality biodiesel. If you want to make the cheapest fuel that will burn in an IDI diesel engine without modification then follow the High Yield Recipe. Whatever your goals, there is a recipe for you.

The Standard Recipe

When using this recipe on higher titration oils KOH is recommended over NaOH as a catalyst.

NaOH = (5grams + Titration ) X liters of oil
Methanol = 22% by volume of the WVO used
Temperature 130F – 150F
While oil is heating mix methanol and caustic
Once the oil is up to temperature add the methanol.
In an Appleseed, it should take one minute for each gallon of WVO to add the methanol. If you have a 35 gallon batch, it should take 35 minutes to introduce the methanol.
On your first few batches you should perform the methanol test every 20 minutes until it passes. Once it passes record the total mixing time and stop. If it takes longer than three hours to pass, then consider increasing the caustic for the next batch.

High Yield Recipe

Know that this recipe does not make ASTM fuel. It makes a blend of WVO and Biodiesel that sufficiently lowers viscosity such that older IDI engines can use it without modification to the engine. The biodiesel from this recipe may damage Direct Injection or Common Rail diesel engines. Use this recipe at your own risk. Biodiesel Processor

NaOH (3.5 grams + Titration) X Liters of oil
Methanol 14% by volume of the WVO used
Temperature 130F – 150F
While oil is heating mix methanol and caustic
Once the oil is up to temperature add the methanol.
In an Appleseed, it should take one minute for each gallon of WVO to add the methanol. If you have a 35 gallon batch, it should take 35 minutes to introduce the methanol.
Mix for one hour
Settle overnight
If you achieve separation then it is good enough
Some people using this recipe allow the fuel to air out and settle for a few days to a few weeks and use it unwashed.

ASTM Recipe

As the titration levels of your feedstock oil increases it becomes more difficult to make ASTM level conversions. Neutral on Infopop suggested that increasing the catalyst by multiplying the the titration number by a correction factor would help people to meet ASTM level conversion with high titration oils. The recipe is identical to the The Standard Recipe above except when calculating the amount of catalyst. In this recipe we first multiply the titration number by 1.15 then add that to our 5 gram base to come up with the grams of NaOH per Liter of WVO.

Comments

stephen
09 Aug 2008, 23:13

pls help me!! can u pls give a process how to make a biodiesel using talisay seeds (terminalia catappa l.).....

chidi
04 Aug 2008, 09:53

plx i made a biodiesel but it did not meet the astm standard,
i used
4grms of sodium hydroxide
250ml methanol
1 litre groundnut oil.

but i did not wash it.