Hi Pierre
>Hi Keith,
>
>I have received suggestions that WVO based biodiesel may contain
>substances not present in its virgin counterpart - nitrosamines,
>dioxins, acrylamides, and that emissions may be more toxic.
In the WVO itself, nitrosamines perhaps, dioxins? Maybe. Acrylamides,
I don't think any more than in SVO. Try an archives search for
"acrylamides".
Anyway, it'd be small traces of the first two if they were there -
not insignificant if you eat it, but for emissions when combusting it
at high temps and under high pressure in a diesel motor? I don't
think it would be in the biodiesel anyway, in the glycerine cocktail
more likely (or in the wash), you'd be talking of traces of traces.
Aren't you looking too far downstream? Lab analysis of a broad
selection of biodiesel made from different WVO feedstock should tell
you more (all having in common that it's properly made and properly
washed).
Or perhaps the burden of proof should be on the accusers? Your
authority for shifting it back to where it belongs would be the EPA
statement I mentioned (below).
Anyway, all three of those things are supposed to be carcinogenic.
Whence then the 93.6% reduction in cancer risks from exhaust
emissions exposure in the UC Davis biodiesel study?
From whom exactly have you received these suggestions, Pierre?
Best wishes
Keith
>I'll keep you posted should I come across anything.
>
>Pierre
>
>--- In biofuel@yahoogroups.com, Keith Addison <[EMAIL PROTECTED]> wrote:
> > Hello Pierre
> >
> > >Keith,
> > >
> > >I am looking for reports comparing emissions from virgin vegoil
> > >biodiesel and watse oil biodiesel.
> > >
> > >I have left a couple of messages here and there.
> > >
> > >Do you have any leads?
> >
> > No I don't. The EPA accepted the NBB's data on virgin soy
>biodiesel
> > as equivalent to all the rest, whatever the feedstock, including
>WVO.
> > Big-time European producers commonly use WVO, the standards are
> > strict there. Why would there be a difference? Unless it's badly
> > made, not washed properly.
> >
> > Best wishes
> >
> > Keith
> >
> >
> > >Pierre
> > >
> > >
> > >--- In biofuel@yahoogroups.com, Keith Addison <[EMAIL PROTECTED]> wrote:
> > >
> > > >
> > > > And this is interesting:
> > > >
> > > > The UC Davis biodiesel study -- "Chemical and Bioassay
>Analyses of
> > > > Diesel and Biodiesel Particulate Matter: Pilot Study -- Final
> > >Report"
> > > > by Norman Y. Kado, Robert A. Okamoto and Paul A. Kuzmicky,
> > >Department
> > > > of Environmental Toxicology, University of California, Davis,
> > > > California, November 1996. This U.S. Department of Energy study
> > >found
> > > > that the use of pure biodiesel instead of petroleum-based
>diesel
> > >fuel
> > > > could offer a 93.6% reduction in cancer risks from exhaust
> > >emissions
> > > > exposure. Acrobat file, 3.1Mb.
> > > >
>http://journeytoforever.org/biofuel_library/UCDavisBiodiesel.pdf
> > > > UC Davis biodiesel study -- summary: the Summary, Results and
> > > > Discussion sections of the report, in html format.
> > > > http://journeytoforever.org/biofuel_library/UCDavisSumm.html
> > > >
> > > > Best wishes
> > > >
> > > > Keith
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