Yes, but what's of interest is the emissions when the substance is burnt in a
particular combustion system. Or, in some cases, ripped to elemental shreds in
a plasma arc :)
So waste-to-energy plants in Europe are permitted to burn all sorts of
materials but they have combustion systems designed appropriately, all sorts of
post-combustion ash and other emissions control and also operate in an
environment where they are highly regulated and monitored.
Picking up on the soap/glycerin theme, earlier this year I used my
undergraduate training as a chemist to make soap. One interesting discovery
made during the experiment was the low tolerance for caustic solutions
exhibited by the coating on a bamix stirrer. We now have a dedicated
soap-making bamix and a recently purchased unit for the more conventional use.
Soap turned out well and has seen operational use at our bathroom and with a
number of friends. As we point out when we give people a few bars you can tell
this soap was made by scientists as it has a rather sludgy colour, doesn't
feature any petals, exotic salts, mineral clays or other interesting additives
and has had no contact with ribbons, cutely written cards or other packaging
beyond the brown paper bag we supply. And as the soap was made in moulds such
as plastic food containers and fruit drink bottles it doesn't look like shells,
animals, etc
As soap it does have a nice feel. This is at least partly due to the presence
of glycerin. A chemical engineer friend of mine who used to run the soap making
division of a large multi-national confirmed that they would remove the
glycerin created during manufacture as this was more valuable for other purposes
Regards
David
Message: 4
Date: Tue, 16 Jul 2013 18:11:18 -0700
From: David<[email protected]>
To: "J. Paul Villella"<[email protected]>, Discussion of biomass
pyrolysis and gasification <[email protected]>
Subject: Re: [Gasification] Oil from plastic waste
Message-ID:<[email protected]>
Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
Paul,
On 7/16/2013 5:27 PM, J. Paul Villella wrote:
> other possible suitable binders are Long Strand Glycerines from the
> production of Biodiesel (they burn like plastic too but need a
> stabilizer/wick/co-burn agent )
Out of the frying pan and into the fire.
Burning glycerine produces acrolein. For some indications of its
toxicity, see Feng, Z; Hu W, Hu Y, Tang M (October 2006). "Acrolein is
a major cigarette-related lung cancer agent: Preferential binding at
p53 mutational hotspots and inhibition of DNA repair"
<http://www.pnas.org/cgi/reprint/0607031103v1>. /Proceedings of the
National Academy of Sciences
<http://en.wikipedia.org/wiki/Proceedings_of_the_National_Academy_of_Sciences>/
*103* (42): 15404--15409.
Better to compost the glycerine, make soap, or produce biogas.
d.
-- David William House "The Complete Biogas Handbook"
|www.completebiogas.com| /Vahid Biogas/, an alternative energy
consultancy |www.vahidbiogas.com | | "Make no search for water. But find
thirst, And water from the very ground will burst." (Rumi, a Persian
mystic poet, quoted in /Delight of Hearts/, p. 77) http://bahai.us/
_______________________________________________
Gasification mailing list
to Send a Message to the list, use the email address
[email protected]
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org
for more Gasifiers, News and Information see our web site:
http://gasifiers.bioenergylists.org/
