<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.19120">
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT size=2 face=Arial>Dear Paul</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"
dir=ltr>
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=paul.olivier@esrla.com href="mailto:paul.olivier@esrla.com">Paul
Olivier</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=stoves@lists.bioenergylists.org
href="mailto:stoves@lists.bioenergylists.org">Discussion of biomass cooking
stoves</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, October 11, 2011 9:44
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Stoves] High mass space
heating options Re: Rocket Stove forthe PLACE</DIV>
<DIV><BR></DIV>
<DIV>...del...</DIV>
<DIV> </DIV>
<DIV>For example, one kg of rice hulls produces about $0.21 in gas but only
about $0.07 in biochar.<BR>In other words, biochar comes in at only one third
of the value of the gas.</DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial># Very interesting!! </FONT></DIV><FONT size=2
face=Arial></FONT></BLOCKQUOTE>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"
dir=ltr>
<DIV><FONT size=2 face=Arial>1: Does the 1.0 kG of rice hulls yield EITHER
$.21 of gas OR $.07 worth of char</FONT></DIV>
<DIV><FONT size=2 face=Arial>OR, </FONT></DIV>
<DIV><FONT size=2 face=Arial>does it yield $.21 worth of gas + $.07 of char,
total $.28 per kG?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>2: What is the weight yield of biochar from 1 kG
of rice hull?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>3: Are the people actually using this biochar for
agricultural purposes?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Thanks!!</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Kevin</FONT></DIV>
<DIV><BR>Biochar production therefore is a by-product of gas
production.<BR>But if the the rice hull can be obtained, as is usually the
case, free-of-charge,<BR>and if biochar can be sold at a nice profit,<BR>then
gas is produced at a negative cost.<BR>Also note that when rice hulls are
properly gasified,<BR>no smoke is produced.<BR>So in producing gas, one earns
a profit in the sale of biochar.<BR>The big economic driver in this instance
is the production of gas.<BR><BR>There are people in Vietnam who know nothing
about the value of rice hull gas,<BR>and they are busy each day making rice
hull biochar in crude retorts.<BR>These low-temperature retorts emit clouds of
smoke that can be seen from miles around.<BR>Focusing only on biochar
production, these people do a lot of damage to the environment and should be
shut down.<BR>The biochar that they produce is anything but
uniform.<BR><BR>For more on this, see: <BR><A
href="http://dl.dropbox.com/u/22013094/Paper/park.pdf">http://dl.dropbox.com/u/22013094/Paper/park.pdf</A><BR>See
the section on gasification starting on page 79.<BR>I am a big believer in
utilizing a multiplicity of approaches with regard to
biomass.<BR><BR>Thanks.<BR>Paul Olivier<BR>Vietnam<BR><BR></DIV>
<DIV class=gmail_quote>On Wed, Oct 12, 2011 at 6:40 AM, Steve Taylor <SPAN
dir=ltr><<A
href="mailto:steve@thetaylorfamily.org.uk">steve@thetaylorfamily.org.uk</A>></SPAN>
wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote><BR><BR>
<DIV class=gmail_quote>
<DIV class=im>On 11 October 2011 17:55, Fireside Hearth <SPAN dir=ltr><<A
href="mailto:firesidehearthvashon@hotmail.com"
target=_blank>firesidehearthvashon@hotmail.com</A>></SPAN> wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>
<DIV>
<DIV dir=ltr>Dear Steve,<BR><BR>
I spent most of my adult life teaching people how to heat their homes
without smoke coming from the chimney, when I see pictures of areas where
bio char is being made I see horrible air pollution from the
fires,<BR></DIV></DIV></BLOCKQUOTE></DIV>
<DIV><BR>I see "biochar" being used as an excuse for burning to clear land
rather than the emissions generated being considered pollution from the
process of making it. <BR><FONT color=#888888><BR>Steve
<BR></FONT></DIV></DIV>
<DIV></DIV><BR>_______________________________________________<BR>Stoves
mailing list<BR><BR>to Send a Message to the list, use the email
address<BR><A
href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</A><BR><BR>to
UNSUBSCRIBE or Change your List Settings use the web page<BR><A
href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org"
target=_blank>http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</A><BR><BR>for
more Biomass Cooking Stoves, News and Information see our web
site:<BR><A href="http://www.bioenergylists.org/"
target=_blank>http://www.bioenergylists.org/</A><BR><BR><BR></BLOCKQUOTE></DIV><BR><BR
clear=all><BR>-- <BR>Paul A. Olivier PhD<BR>27C Pham Hong Thai
Street<BR>Dalat<BR>Vietnam<BR><BR>Louisiana telephone: 1-337-447-4124 (rings
Vietnam)<BR>Mobile: 090-694-1573 (in Vietnam)<BR>Skype address:
Xpolivier<BR><A href="http://www.esrla.com/"
target=_blank>http://www.esrla.com/</A><BR>
<P>
<HR>
<P></P>_______________________________________________<BR>Stoves mailing
list<BR><BR>to Send a Message to the list, use the email
address<BR>stoves@lists.bioenergylists.org<BR><BR>to UNSUBSCRIBE or Change
your List Settings use the web
page<BR>http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org<BR><BR>for
more Biomass Cooking Stoves, News and Information see our web
site:<BR>http://www.bioenergylists.org/<BR><BR>
<P>
<HR>
<P></P><A></A>
<P class=avgcert align=left color="#000000">No virus found in this
message.<BR>Checked by AVG - <A
href="http://www.avg.com">www.avg.com</A><BR>Version: 10.0.1410 / Virus
Database: 1522/3943 - Release Date: 10/07/11</P></BLOCKQUOTE></BODY></HTML>