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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 10th August 2008, 08:58 AM
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Question glycerine not setting up

From my test batch I had a 21% glycerine dropout after setting for 4 days w/ bio on top. Glycerine is still liquid. Would I expect the glycerine to harden or does it remain in it's initial state when it dropped?
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Old 10th August 2008, 10:18 AM
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Re: glycerine not setting up

What did you use - KOaH or NAoH?
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Old 10th August 2008, 10:47 AM
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Re: glycerine not setting up

95% koh 5.5 grams
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Old 10th August 2008, 06:41 PM
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Re: glycerine not setting up

I use Sodium Hydroxide (NaOH) and it hardens. Potassium Hydroxide (KaOH), I believe, stays liquid when it cools.
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Old 10th August 2008, 08:17 PM
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Re: glycerine not setting up

Correct, KOH stays a liquid.
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Old 10th August 2008, 10:57 PM
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Re: glycerine not setting up

NaOH and new oil will produce a bi-product that will also stay liquid.
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Old 10th August 2008, 11:47 PM
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Re: glycerine not setting up

Quote:
Originally Posted by Qwarla View Post
NaOH and new oil will produce a bi-product that will also stay liquid.
Thank god, had me worried for a minute!
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