5/40 = 12.5% so he is about right there. It should be from ~10 - 15%
depending on feedstock, chemicals, and processing for a single stage batch
process.

On Wed, 5 Mar 2003, Keith Addison wrote:

> >mark and keith - thanks for the advice.  I am going to go down to
> >the lab today and run several 1 liter tests, including reprocessing
> >and the oil wash (intersesting idea!).  I will report on what I find.
> >What is the philosophy behind mixing the glycerine back in after
> >seperation?  and might that also be a help in my situation?
> 
> Aleks suggests it in the acid-base two-stage method (but not an
> essential step):
> http://journeytoforever.org/biodiesel_aleksnew.html
> Foolproof biodiesel process
> 
> See Step #18.
> 
> >Is it possible that 5 gallons glycerine (1/8 volume) seperation on
> >40 gallons oil is normal?
> 
> Should be about 11%, but I think that's just the glyc, and you're
> probably talking of everything, aren't you? - the stuff that drops
> out at the bottom of the tank, glycerine, soap (from FFA), catalyst
> and about half the excess methanol. But 5 in 40 could be right.
> 
> >What would be the consequence of burning fuel in an engine if there
> >were more glycerine to drop out?
> 
> Have a look at this previous message about contaminants:
> http://nnytech.net/~archive2/index.php?view=18968&list=BIOFUEL
> 
> >Thanks for the follow up - more soon on my trials.
> 
> Yes please!
> 
> Best
> 
> Keith
> 
> >Best,
> >Jack
> >Jack Kenworthy
> >Sustainable Systems Director
> >The Cape Eleuthera Island School
> >242-359-7625 ph. 954-252-2224 fax
> >www.islandschool.org
> 
> 
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