Shawn,
I suspect that the "dense substance at the bottom of the flask" was
unreacted glycerides, indicating an incomplete reaction.
I now drain a sample of the mix towards the end of processing.
- Shut off the pump
- Drain a sample and turn the pump back on
- Allow the glycerin to settle for a few minutes
- Perform Jan W's quality test on the top (crude BD) layer
There is still glycerin in the mix, but if I have succeeded in getting
a complete reaction, I do not get an insoluble residue on the bottom.
I repeat the test after washing the BD. It is a quick, easy test, and
the
result, whether it passed or failed can be added to the methoxide for your
next batch ..... no wasted methanol, costs nothing to perform the test.
Best to You,
Tom
----- Original Message -----
From: "shawn patrick" <[EMAIL PROTECTED]>
To: "Biofuel Mailing List" <biofuel@sustainablelists.org>
Sent: Friday, September 07, 2007 9:03 AM
Subject: [Biofuel] Biofuel Quality Test
> Good Day All,
>
> My question is in regards to the Quality test develop by Jan Warnqvist. Is
> this test to be performed on the product before or after the glycerin has
> been removed, or does it matter. I performed the test with out removing
> glycerin and found that I got a clear bright phase except you could tell
> that there was a more dense substance at the bottom of the flask. I
> assumed
> that was the glycerin since just extracted a sample from the process
> without
> separating BD from glycerin. Does the glycerin dissolve in the methanol??
> Was I looking at the unprocessed materials in my BD??
>
> Regards
>
> Shawn Patrick
>
>
>
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>
>
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