Thank you Keith for your thoughts.
I will try stir washing with hot water.
I have concerns re: stir washing. Can I expect good results if I rig a
paint stirrer and drill up to a tall, narrow 35 gallon wash tank? Will it
provide sufficient agitation throughout?
Highest regards
Tom
----- Original Message -----
From: "Keith Addison" <[EMAIL PROTECTED]>
To: <Biofuel@sustainablelists.org>
Sent: Wednesday, August 03, 2005 9:42 AM
Subject: Re: [Biofuel] problems with wash
Hello Tom
Sorry you didn't get an answer last time.
I have pump-washed a 15L batch of biodiesel 7 times and the wash
water is still milky. Does this indicate an incomplete reaction?
Prior to washing I did a"shake test" and got clear separation with
only a thin layer between the water and the biodiesel.
Tom
Comparing pump- and prop-washed fuel: "Pump washing has the potential to
more quickly and thoroughly 'atomize' the two fluids and generate an
emulsion in washes of biodiesel that are borderline to or perhaps far less
than a reaction completion than does mechanical agitation."
-- From: Stir washing
http://journeytoforever.org/biodiesel_bubblewash.html#stir
Try stir-washing next time. Try using hot water with the batch you're
having trouble with. There are other ways of rescuing it here:
http://journeytoforever.org/biodiesel_bubblewash.html#emulsion
HTH
Best wishes
Keith
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