From: "Jan Warnqvist" <[EMAIL PROTECTED]>
Reply-To: Biofuel@sustainablelists.org
To: <Biofuel@sustainablelists.org>
Subject: Re: [Biofuel] Quality Test
Date: Thu, 11 Aug 2005 18:51:02 +0200
Hello Jeffery.
The test method that you are using seems to me highly dubious, since
there
are a number of pre-assumptions that has to be met.
For a further check I´d suggest this:
Take exactly 25 ml of biodiesel and dissolve it in exactly 225 ml of
methanol in a measuring glass. Now:
The biodiesel should be fully soluble in the methanol forming a clear
bright
phase. If not, there is pollution in the biodiesel causing you
trouble with
the water test. Each ml of undissolved material is corresponding to
4% by
volume. Are there any undissolved material at the bottom of the
measuring
glass ?
If there is, your reaction is not complete and this is causing you
trouble
with the water test.
This method does not cover every aspect of quality, but it gives a hint
though........
Good luck to you
Jan Warnqvist
AGERATEC AB
[EMAIL PROTECTED]
+ 46 554 201 89
+46 70 499 38 45
----- Original Message -----
From: "Jeffrey Tan" <[EMAIL PROTECTED]>
To: <Biofuel@sustainablelists.org>
Sent: Thursday, August 11, 2005 2:19 PM
Subject: [Biofuel] Quality Test
> Hello all. Need some explanation and advise here on my experiments
please.
>
> I have been using virgin cooking palm oil for the experiments. When
> following the steps for checking on quality, I put in 150ml of de
ionised
> battery water and 150ml of the biodiesel obtained but the end
result was
> clear yellowish liquid on top and white emulsion like on the
bottom. I
have
> done 3 different batches with the same result. My further reading and
guess
> is either the NaOH is too much/little or the methanol is too
much/little.
> My next step will probably to increase the methanol from 200ml to
400ml
(my
> batches are in 1 liter of new oil). Any comments or suggestions
from the
> gurus out there?
>
> Can I continue with the bubble washing process with the above 3 test
> batches?
>
> Jeff
>
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