RE: pdx-biodiesel Digest, Vol 61, Issue 16

Hello John
Emulsions occur because the biodiesel becomes "imprisoned" in these soap
spheres. These soap spheres can be broken apart by pushing them tightly
together by freezing the whole emulsion. Or we can break the emulsion by
lowering the surface tension between the soap molecules using a solvent =
like
alcohol. The alcohols (methanol and glycerin) in the biodiesel =
by-product
are a readily available solvent to break emulsions; much easier than
freezing a large emulsion solid.

The above came from the link below.  This is a great explanation on
emulsions and how to avoid them.  I think you will find this article
interesting. =20
http://www.biodieselcommunity.org/breakingemulsions/

Mark

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Sent: Tuesday, February 26, 2008 12:54 PM
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Subject: pdx-biodiesel Digest, Vol 61, Issue 16


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Today's Topics:

   1. dealing with wast (John Harris)


----------------------------------------------------------------------

Message: 1
Date: Tue, 26 Feb 2008 10:13:41 -0700
From: "John Harris" <[email protected]>
Subject: [pdx-biodiesel] dealing with wast
To: "Bio Diesel co-op" <[email protected]>
Message-ID: <000801c8789a$efea3720$01fea8c0@homeo278bja379>
Content-Type: text/plain;	charset=3D"iso-8859-1"

I have two questions.
1.  I live in the country and have a septic tank.  Do I have to do =
anything
to treat my septic tank when I pour the wast water into my septic system
that I used to wash my bio diesel? 2.  A while ago I wrote about my wash
test when I used 100ml processed bio and 100ml water and ended up with a
white film between the two. I was advised to freeze it.  Freezing was
supposed to get rid of the soap, which it did. Freezing also cleard up =
the
foggy bio to a clear golden color.  Why did my finnished bio become so =
clear
when it was frozen?  What does this tell me about my test bio?

------------------------------

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End of pdx-biodiesel Digest, Vol 61, Issue 16
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