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<div class="moz-cite-prefix">Hi Ron,<br>
<br>
Dec 25th, three days after an Ontario ice storm, -30C, pity those
who lack electricity, a chimney powered stove, fuel or fortunate
friends . <br>
The song goes, "All you need is love, Ha Ha Ha Ha Ha". Natures
chorus?<br>
<br>
The 'good king' would not be 'printing the sod' around here.
There are old timer tales of driving horse and sleigh on top of
hard snow crossing right over the fences. I used to doubt them.<br>
"Deep and crisp and even"<br>
<br>
I guesstimate that Burt's Greenhouses were holding aloft 100000 kg
of ice. Or 400kg per structural member. One is flattened because
we ignored its known limited capacities. <br>
A human tendency.<br>
<br>
Now to your questions; Thought I should read it first then
answer....t<br>
<br>
On 23/12/2013 12:41 PM, Ronal W. Larson wrote:<br>
</div>
<blockquote
cite="mid:9489A4FF-3291-474E-A2DB-EC8A2E157806@comcast.net"
type="cite">
<span style="display:none"> </span>
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<div>Alex (with an expanded list of ccs; I include
“stoves”, since that is the community who first heard of
your great work; Thanks to John for the alert):</div>
<div><br>
</div>
<div> It was good to see the name Burt’s in the following.
Somewhere there should have also been the name “English”.
I took the three papers being discussed here (two in an
Appendix) as being very good news for biochar. Three
parts of the three reports (for me) need an explanation
that probably only you can supply:</div>
</div>
</div>
</div>
</blockquote>
Ad-junked Professor English.<br>
<blockquote
cite="mid:9489A4FF-3291-474E-A2DB-EC8A2E157806@comcast.net"
type="cite">
<div id="ygrp-mlmsg" style="position:relative;">
<div id="ygrp-msg" style="z-index: 1;">
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<div><br>
</div>
<div> a. The char labeled “old” was clearly not as
acceptable. The size distribution and the carbon content
were different. Do you have an explanation? How could
the carbon content be so low?</div>
</div>
</div>
</div>
</blockquote>
When we got started on this a few years back our standard fuel
included demolition wood and its high levels of minerals and metals.
M and Ms are dense and greatly dilute the char on a mass basis even
when they aren't very noticeable in a cursory glance. Left over ash
in the auger containment could contaminate the char. The auger also
worked against the back pressure of a plug seal at the end where the
auger ground the char into fines. All of that was changed, new
'cleaner' and 'very clean' fuel feed stock and auger set up, which
was cleaned before subsequent testing. <br>
<blockquote
cite="mid:9489A4FF-3291-474E-A2DB-EC8A2E157806@comcast.net"
type="cite">
<div id="ygrp-mlmsg" style="position:relative;">
<div id="ygrp-msg" style="z-index: 1;">
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<div><br>
</div>
<div> b. I had not realized you could produce char all
the way from 500 C to >700 C. Is the former done at
lower power levels (less primary air) or what? Can you
“dial in” a desired char temperature? Over what range?</div>
</div>
</div>
</div>
</blockquote>
Those numbers are lacking large +/- factors. The probe had a few
thermocouples in one linear zone. The lower temperature was achieved
by speeding up the grate. It was a one-off batch and as such I would
not draw any conclusions from it. No temperature dial as such but
there is, for a consistent fuel, an equilibrium state that is not
that difficult to set up. However it has yet to be tested
continuously over tens of hours or days, months.<br>
<blockquote
cite="mid:9489A4FF-3291-474E-A2DB-EC8A2E157806@comcast.net"
type="cite">
<div id="ygrp-mlmsg" style="position:relative;">
<div id="ygrp-msg" style="z-index: 1;">
<div id="ygrp-text">
<div><br>
</div>
<div> c. Is yours still the only known retrofit of a
boiler going from combustion to pyrolysis?</div>
</div>
</div>
</div>
</blockquote>
In light of what Tom Miles has said, can we restate the
question?"going from combustion" to 'inefficient' high char yield
gasification with close coupled staged combustion of the gasses? <br>
Its a big old world and I don't know what is being done out there.
John Bonitz is the only person beyond this study that I have spoken
to about this in the last couple of years. A few technical-tourist
have spoken to the owner of Burt's Greenhouses. <br>
<br>
Peace to you and the mailing list multitudes,<br>
Alex<br>
<blockquote
cite="mid:9489A4FF-3291-474E-A2DB-EC8A2E157806@comcast.net"
type="cite">
<div id="ygrp-mlmsg" style="position:relative;">
<div id="ygrp-msg" style="z-index: 1;">
<div id="ygrp-text">
<div><br>
</div>
<div>Ron</div>
<div><br>
</div>
<br>
<div>
<div>On Dec 23, 2013, at 12:53 AM, Erich Knight <<a
moz-do-not-send="true"
href="mailto:erichjknight@gmail.com">erichjknight@gmail.com</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div dir="ltr">
<div>
<div>Thanks John,<br>
<br>
</div>
This work with Burt's Greenhouse will go into my
report to Richard Landis at DuPont & folks at
ORNL Bio- Sciences. This email/report, for two years
now, is a collection of studies covering the
alphabet soup of toxins. 24Ds, PCBs, DDT, Cd, heck
all the heavy metals, Salts, Atrazine, cents on the
dollar, Biochars are a "Shotgun" approach, in the
best sense of the word. <br>
<br>
</div>
Along with ;<br>
<font size="4"><b>Use of phytoremediation and biochar
to remediate heavy metal polluted soils: a review</b></font><br>
<a moz-do-not-send="true"
href="http://www.solid-earth-discuss.net/5/2155/2013/sed-5-2155-2013.pdf">http://www.solid-earth-discuss.net/5/2155/2013/sed-5-2155-2013.pdf</a><br>
<br>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div dir="ltr">
<div>Cheers,<br>
<br>
</div>
Erich<br>
<br>
Erich J. Knight<br>
Shenandoah Gardens<br>
1047 Dave Berry Rd. McGaheysville, VA. 22840<br>
<a moz-do-not-send="true" value="+15402899750"><span
dir="ltr"> <span dir="ltr"><img
moz-do-not-send="true"><span><span
dir="ltr"> <span dir="ltr"><img
moz-do-not-send="true"><span>540-289-9750</span></span> </span></span></span> </span></a>
<br>
<br>
<b>Policy & Community Chairman</b><br>
2013 North American Biochar Symposium<br>
Harvesting Hope: The Science & Synergies of
Biochar<br>
October 13-16, 2013 at UMASS Amherst<br>
<span><a moz-do-not-send="true"
href="http://pvbiochar.org/2013-symposium/"
target="_blank">http://pvbiochar.org/2013-symposium/</a></span><b><span><br>
</span></b><br>
</div>
</div>
<br>
<br>
<div class="gmail_quote">On Sun, Dec 22, 2013 at 9:48
PM, John Bonitz <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:john.bonitz@gmail.com"
target="_blank">john.bonitz@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="border-left-width: 1px;border-left-color:
rgb(204, 204, 204);border-left-style: solid;">
<div dir="ltr">
<div>Friends, </div>
<div><br>
</div>
<div>Here is a new research report on the
biochar from Burt's Greenhouses in Ontario,
Canada.<br>
</div>
<div><br>
</div>
<div><a moz-do-not-send="true"
href="http://burtsgh.com/wpr/wp-content/uploads/2013/12/Report_on_the_Production_and_Characterization_Biochar_Produced_at_BurtsGreenhouses_Final_O1.pdf"
target="_blank">http://burtsgh.com/wpr/wp-content/uploads/2013/12/Report_on_the_Production_and_Characterization_Biochar_Produced_at_BurtsGreenhouses_Final_O1.pdf</a><br>
</div>
<div><br>
</div>
<div>I've not read it yet. But the relevance to
our work here in the Southeast is that there
are a number of existing biomass boilers that
could be modified and operated to co-produce
biochar, just like Alex English did at Burt's
Greenhouses. </div>
<span class="HOEnZb"><font color="#888888">
<div><br>
</div>
<br clear="all">
<div>
<div
style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif;">John
Bonitz<br>
Pittsboro, NC</div>
<div
style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif;">
<span
style="font-size:10pt;font-family:'Arial
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style="color:rgb(17,85,204);"
target="_blank">919-360-2492</a></span><span
style="font-size:10pt;font-family:'Arial
Narrow',sans-serif;"> </span><span
style="font-family:'Arial
Narrow',sans-serif;">|</span><span
style="font-family:'Arial
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style="font-size:10pt;font-family:'Arial
Narrow',sans-serif;color:blue;"><a
moz-do-not-send="true"
href="http://www.linkedin.com/in/johnbonitz"
style="color:rgb(17,85,204);font-size:10pt;" target="_blank">LinkedIn</a></span></div>
<div
style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif;">~~~~~~~~~~~~~</div>
</div>
</font></span></div>
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#ygrp-mlmsg * {
line-height: 1.22em;
}
#ygrp-mlmsg #logo {
padding-bottom: 10px;
}
#ygrp-msg p a {
font-family: Verdana;
}
#ygrp-msg p#attach-count span {
color: #1E66AE;
font-weight: 700;
}
#ygrp-reco #reco-head {
color: #ff7900;
font-weight: 700;
}
#ygrp-reco {
margin-bottom: 20px;
padding: 0px;
}
#ygrp-sponsor #ov li a {
font-size: 130%;
text-decoration: none;
}
#ygrp-sponsor #ov li {
font-size: 77%;
list-style-type: square;
padding: 6px 0;
}
#ygrp-sponsor #ov ul {
margin: 0;
padding: 0 0 0 8px;
}
#ygrp-text {
font-family: Georgia;
}
#ygrp-text p {
margin: 0 0 1em 0;
}
#ygrp-text tt {
font-size: 120%;
}
#ygrp-vital ul li:last-child {
border-right: none !important;
}
-->
</style>
<!--~-|**|PrettyHtmlEnd|**|-~-->
<!-- end group email -->
</blockquote>
<br>
</body>
</html>