<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'>Boston:<br>
<br>
I have lived in Boulder, but am now (normally - but won't be back
until early April) in Golden. I would like then to meet and discuss
this further. <br>
<br>
I think the issue for seed cake, which I have never worked with, is
breaking or forming the cake into something that resembles the original
seed - a pellet.or "stick" form. Can you describe the cake (thickness,
density, malleability, etc)? There are many readers of this list
knowledgeable on creating briquettes, pellets, etc. <br>
<br>
As Dr. Anderson has suggested, the issue for making charcoal in a
cook stove is getting uniform primary air flow through the body of the
fuel bed. Working with big slabs won't work for TLUDs, BLDDs, or TLODs.<br>
<br>
Ron<br>
<br>----- Original Message -----<br>From: "Boston Nyer" <bostonnyer@gmail.com><br>To: "Discussion of biomass cooking stoves" <stoves@lists.bioenergylists.org><br>Sent: Friday, January 21, 2011 3:20:55 AM<br>Subject: Re: [Stoves] (no subject)<br><br>Crispin,<div><br></div><div>I'm located in the US (Colorado). We're actually having difficulties importing seedcake from Guatemala, where our research is being conducted. To the best of my knowledge, the closest source of Jatropha seedcake would be <a href="http://www.diligent-tanzania.com/index.php?id=1112" target="_blank">Diligent Tanzania</a> (<span class="Apple-style-span" style="font-family: arial,sans-serif; font-size: 13px; border-collapse: collapse;"><a href="mailto:jan@diligent-tanzania.com" target="_blank">jan@diligent-tanzania.com</a> or <a href="mailto:ruud.van.eck@diligent.nl" target="_blank">ruud.van.eck@diligent.nl</a>)</span>, who are currently trying to briquette the material with an automatic press. </div>
<div><br></div><div>It sounds like Dr. Anderson has found a way to burn the seeds, which is most excellent, but it would also be beneficial to burn the waste material after the oil extraction process. Maybe with a similar TLUD? As you know, Jatropha projects are springing up everywhere, so it could be very influential...</div>
<div><br></div><div>Cheers,</div><div>Boston</div>
<div><br></div><div><br></div><div><br></div><div><br></div><div><br><br><div class="gmail_quote">On Thu, Jan 20, 2011 at 1:57 PM, Crispin Pemberton-Pigott <span dir="ltr"><<a href="mailto:crispinpigott@gmail.com" target="_blank">crispinpigott@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div lang="EN-CA"><div><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);">Dear Boston</span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);">Can you send me some jatropha seed cake?</span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);">In fact, where are you? If it is more convenient, you can send it to SeTAR in Johannesburg and I will deal with it there.</span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);">It is hard to believe there is no easy way to burn it. </span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p><p class="MsoNormal">
<span style="font-size: 11pt; color: rgb(31, 73, 125);">Thanks</span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);">Crispin</span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p>
<p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p><p class="MsoNormal"><span style="font-size: 11pt; color: rgb(31, 73, 125);"> </span></p><p class="MsoNormal"><b><span style="font-size: 10pt;" lang="EN-US">From:</span></b><span style="font-size: 10pt;" lang="EN-US"> <a href="mailto:stoves-bounces@lists.bioenergylists.org" target="_blank">stoves-bounces@lists.bioenergylists.org</a> [mailto:<a href="mailto:stoves-bounces@lists.bioenergylists.org" target="_blank">stoves-bounces@lists.bioenergylists.org</a>] <b>On Behalf Of </b>Boston Nyer<br>
<b>Sent:</b> 20 January 2011 15:39</span></p><div><br><b>To:</b> Discussion of biomass cooking stoves<br><b>Subject:</b> Re: [Stoves] (no subject)</div><p></p><p class="MsoNormal"> </p><div><p class="MsoNormal">
Hi Richard,</p><div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">I have a related question to this discussion, which I think is interesting.</p></div><div><p class="MsoNormal"> </p></div><div>
<p class="MsoNormal">At CU, we have a Jatropha project that you fielded some questions about a few months ago. As I'm sure you've heard, Jatropha seedcake does not burn well, not even close. So, one of our questions now is: what can we do with this waste stream this is both useful and desirable?</p>
</div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">One approach we will test is to carbonize the material and for biochar briquettes (and a water filter media, etc.). However, I wholeheartedly agree with your sentiment on biochar briquettes. What is your opinion if the ag-waste doesn't burn well normally? It still seems a bit contrived, eh?</p>
</div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">I'm looking forward to hearing your perspective.</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">Cheers,</p></div><div><p class="MsoNormal">
Boston</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal" style="margin-bottom: 12pt;"> </p></div></div></div></div></div><br>_______________________________________________<br>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Boston Nyer<br>Graduate Student<br>Department of Civil, Environmental, and Architectural Engineering<br>University of Colorado at Boulder<br>(585) 503-3459<br>
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