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<div class="moz-cite-prefix">Lloyd and Crispin,<br>
<br>
Thank you both for your comments. My one question is:<br>
<br>
Are there "waste alcohols" (or very low value) that can be used
for burning purposes (excluding ethanol and drinking-alcohol)?<br>
<br>
Probably "only your distiller or refiner knows for sure" or knows
what is even available. Small amounts and questionable
emissions/toxins are not of much interest for cookstove purposes.<br>
<br>
Paul<br>
<br>
<pre class="moz-signature" cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a class="moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a>
Skype: paultlud Phone: +1-309-452-7072
Website: <a class="moz-txt-link-abbreviated" href="http://www.drtlud.com">www.drtlud.com</a></pre>
On 4/17/2014 3:00 AM, Philip Lloyd wrote:<br>
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<div class="Section1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Yes,
there are a zillion alcohols – don’t forget
glycerol, which has 3 –OH’s in one molecule! And yes, some
are formed during fermentation, but there tends to be less
of each, the longer
the carbon chain. You will get a bit of propanol (“rubbing
alcohol”)
less butanol (“butyl alcohol”), less still pentanol (“amyl
alcohol”) and so on. These make up a large fraction of
“fusel
oil” left over after you have redistilled the crude ethanol
you first get
from the fermentate – and the fact that it is referred to as
an oil warns
you that it is not too good a fuel. It is quite difficult to
get it to combust
cleanly, and if you don’t, you land up with a lot of
aldehydes and other
nasties in the air which smell terrible (fusel oil itself is
pretty grungy
smelling). Many of these higher alcohols metabolise with
difficulty, meaning
they are a bit poisonous, as the body can’t get rid of them
easily –
which is why alcohol for drinking is usually distilled at
least twice (to minimize
the residual fusel oil in the product) if you go for batch
distillation.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hope
that helps<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Prof
Philip Lloyd</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Energy
Institute</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Cape
Peninsula University of Technology</span><span
style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">PO
Box 652, Cape Town 8000</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><a class="moz-txt-link-freetext" href="Tel:021">Tel:021</a>
460 4216</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Fax:021
460 3828</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Cell:
083 441 5247</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><a
moz-do-not-send="true" href="mailto:lloydp@cput.ac.za">lloydp@cput.ac.za</a></span><span
style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span
style="font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext"> Stoves
[<a class="moz-txt-link-freetext" href="mailto:stoves-bounces@lists.bioenergylists.org">mailto:stoves-bounces@lists.bioenergylists.org</a>] <b>On
Behalf Of </b>Crispin
Pembert-Pigott<br>
<b>Sent:</b> 16 April 2014 07:15<br>
<b>To:</b> 'Discussion of biomass cooking stoves'<br>
<b>Subject:</b> Re: [Stoves] Leftover alcohol.......was
Re: Char from coir Re:
Biochar Inquiry<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-CA">Dear Paul<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-CA">I was contacted by Simunye looking for a way to
turn these
alcohols into some form of a useful product. As I recall
there were 112 types
of ‘-ol’. I did not realise there were so many different
ways to
connect an OH to a carbon construct.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-CA">So methanol and ethanol are two of them, and
there are a huge
number of others that are formed during fermentation. I
think perhaps Prof
Lloyd is the right person to make a comment on what they are
and (perhaps) how
dangerous they are as domestic fuels.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-CA">All it means from a practical point of view is
they have
difference boiling points so they are separated from the
main products.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-CA">Regards<br>
Crispin<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
lang="EN-CA">Crispin,<br>
<br>
Please provide more info (or links) about the LEFTOVER
alcohols from ethanol
refining.<br>
<br>
Paul<br>
<br>
<o:p></o:p></span></p>
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