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Making Biodiesel This is the place to discuss any aspects of making biodiesel. Tips, techniques, equipment, supplies, storage, etc.

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Old 15th August 2008, 01:53 PM
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ford94 is an unknown quantity at this point
3/27

Used shortening test mix , 14% drop out of glycerine , 1 st. wash a violent shake of 10 sec. in a pet bottle seperation was done in 5 seconds , 2 nd. wash sep took app. 15 min. 3 rd. wash took also 15 min. Did 3/27 and the tiny beads combined to drop app. 1/8 in diameter . According to what i read this is a fail , right ? If so is a likely cause I need a tad more koa ? If so I realize I have to determine what a tad is . Tks
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Old 15th August 2008, 09:33 PM
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Re: 3/27

If you told us exactly what yopu did we might be able to tell you what a tad is, but without the needed information we would be grasping at straws. Just like we are grasping at straws trying to work out what koa is?
Do you mean KOH or NaOH? This is important as the quantities required change depending on which chemical you have used.

If you used KOH a base amount of around 8 grams (90%KOH) should give a good conversion.
If using NaOH 5 grams (99%NaOH) should be all that's needed for a base amount.
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Old 16th August 2008, 05:38 AM
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ford94 is an unknown quantity at this point
Re: 3/27

Shortening , koh , 1 dr. to 1 ltr. distilled water for titrate. Using litmus paper 7 mil. to titrate There is 33 gms. in 1 oz. There is 437 grs. in 1 oz. Therefore 13.24 grs. = 1 gm. I did a 500 ml ltr test . Titrate was 7 mils. Base 5.5 grs. 90% koh . So base 5.5 + 7 divided by 2 = 6.25 gms. (500 mil ltr ) 6.25 gm times 13.24 = 82.75 grs. to 100 mil metenol Blended fo 15 min . The bio glycerine seperation was couple seconds . I let it sit 1 day then did the wash as I said , then the 3/27 test and ended up with 1/8 in dia. of oil . To me a tad would be 10% which would be .55 grns added to the base . I read people have mayonnais looking stuff or all kinds of things there fore I was apprehinseve of adding to much koa. I noticed you said bas 8 grms . which is more than my titrate + base . Any clearification you can give would be much appericater . Tks.
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Old 16th August 2008, 05:24 PM
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Re: 3/27

I use a base of 8 grams + titration. (KOH)
You might find it much easier if you use new oil for experimenting at first.
That way you will not need to titrate with new oil.
Also for the indicator for titration you could try tumeric. Very easy to use and easy to find in the spice section of the supermarket.

Have a read here for a few tips and tricks including how to titrate using tumeric. One variation on the timeric method is to add a tiny bit of powder directly to the alcohol instead of making up indicator fluid.

As for your batch being a fail, it's more of saying something needs a little more attention. It is still usable fuel.
Your base amount will probably need to be adjusted up to 8 grams and you will find the 3/27 test results will be much better.
Are you drying the bio before you do the 3/27 test? The test works great on unwashed, or washed and dryed bio, but if it is washed and not dried the suspended water can change the results slightly.
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