<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><div><p class=MsoNormal>I would like to know the composition of pyrolysis gas. This has nothing to do with anaerobic digestion but the need for this information arose because of the fact that lignocellulosic material, which represents the largest bulk of biologically produced organic material, cannot generate biogas through A.D. Combustible gas, and of course a lot of tar were produced when I heated dry agricultural waste under anaerobic conditions, but when I consulted konwledgiable persons, and asked them about the composition of this gas, all of them, without exception, informed me that this gas contained about 55% nitrogen, about 40% carbon monoxide and small quantities of hydrogen and methane. This is obviously the composition of producer gas, which is produced when a substance is gassified by burning it. As the process of burning requires air, and since the oxygen is used up in the process of burning, one gets the high nitrogen content in the producer gas. In my experiment, I just heated the material in a closed vessel, The starting material itself has no protein, and no outside air is allowed to get into the vessel. So there can be no nitrogen in the gas (or very little of it).<o:p></o:p></p></div><div><p class=MsoNormal>Yours<o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>A.D.Karve <br clear=all><br>-- <br>***<br>Dr. A.D. Karve<br>President, Appropriate Rural Technology Institute (ARTI)<br><br>*Please change my email address in your records to: <a href="mailto:adkarve@gmail.com">adkarve@gmail.com</a> *<br><br><br><o:p></o:p></p></div></div></body></html>