Posted by Peter Lowrie on May 5, 2006, 2:27 am
I understand that one particular method to make biodiesel from used food oil
is to blend in some caustic soda and heat it up while stirring for a while.
Viola, then you have various byproducts. i understand that you get back
caustic soda, biodiesel and glycerine.
Glycerine is a type of sugar isn't it?
If it is then you could add yeast to it and distill alcohol, add that to
your biodiesel (which would thin it down).
So then you have your biodiesel/alcohol mixture. Then add to that some
toluene and you'd have petrol - wouldn't you?
--
Regards,
Peter.
http://www.pelicom.net.nz
Posted by Derek Broughton on May 5, 2006, 10:00 am
Peter Lowrie wrote:
> I understand that one particular method to make biodiesel from used food
> oil is to blend in some caustic soda and heat it up while stirring for a
> while. Viola, then you have various byproducts. i understand that you get
> back
> caustic soda, biodiesel and glycerine.
>
> Glycerine is a type of sugar isn't it?
>
> If it is then you could add yeast to it and distill alcohol, add that to
> your biodiesel (which would thin it down).
Not easily. Yeasts are really picky about the sugars they'll deal with,
which is what makes beer-making so much fun. What you've got left after
separating out the biodiesel are the prime ingredients for soap.
--
derek
Posted by John Gilmer on May 5, 2006, 11:00 am
> Glycerine is a type of sugar isn't it?
More accurate to call it a triple base ALCOHOL.
"Glycols" are double based alcohols.
It's just the propane molecule (three carbons) with one of the hydrogens
on each carbon replaced by an "OH" group.
"Regular" alcohols only replace ONE hydrogen with the OH group. The
simplest alcohol is CH3OH or methanol.
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> oil is to blend in some caustic soda and heat it up while stirring for a
> while. Viola, then you have various byproducts. i understand that you get
> back
> caustic soda, biodiesel and glycerine.
>
> Glycerine is a type of sugar isn't it?
>
> If it is then you could add yeast to it and distill alcohol, add that to
> your biodiesel (which would thin it down).