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<DIV><FONT face=Verdana>Dear Prof. Karve</FONT></DIV>
<DIV><FONT face=Verdana></FONT> </DIV>
<DIV><FONT face=Verdana>Thanks for adding the voice of experience. I was
quoting, from my armchair, a New Zealand government leaflet passed on by
Ken Calvert, which lists biogas yields from 20 different substrates.
The table is entitled "Production of biogas from digestion of various materials
at 35 deg C and suitable retention times with a loading concentration of 5%
total solids". Top of the list is banana, fruit and stem (not "whole plant", as
I misquoted from memory), yielding 940 liters of biogas (at 53% methane) per kg
of total solids, retention time 15 days. Next are potato tuber at 880 liters and
sugarbeet root at 620. Bottom of this particular list are cattle and sheep
manure, at 190/180 - 220 liters. I had thought some other
tropical/subtropical crops such as cassava were also listed, but that must have
been another source.</FONT></DIV>
<DIV><FONT face=Verdana></FONT> </DIV>
<DIV><FONT face=Verdana>Best regards</FONT></DIV>
<DIV><FONT face=Verdana></FONT> </DIV>
<DIV><FONT face=Verdana>Robert Taylor </FONT></DIV>
<DIV><FONT face=Verdana></FONT> </DIV>
<DIV><FONT face=Verdana></FONT> </DIV>
<BLOCKQUOTE
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<DIV style="FONT: 10pt 新細明體"><FONT face=Verdana>----- Original Message -----
</FONT></DIV>
<DIV style="FONT: 10pt 新細明體; BACKGROUND: #e4e4e4; font-color: black"><FONT
face=Verdana><B>From:</B> </FONT><A title=adkarve@gmail.com
href="mailto:adkarve@gmail.com"><FONT face=Verdana>Anand Karve</FONT></A><FONT
face=Verdana> </FONT></DIV>
<DIV style="FONT: 10pt 新細明體"><FONT face=Verdana><B>To:</B> </FONT><A
title=stoves@lists.bioenergylists.org
href="mailto:stoves@lists.bioenergylists.org"><FONT face=Verdana>Discussion of
biomass cooking stoves</FONT></A><FONT face=Verdana> </FONT></DIV>
<DIV style="FONT: 10pt 新細明體"><FONT face=Verdana><B>Sent:</B> Tuesday, December
06, 2011 2:55 PM</FONT></DIV>
<DIV style="FONT: 10pt 新細明體"><FONT face=Verdana><B>Subject:</B> Re: [Stoves]
banana peels</FONT></DIV>
<DIV><FONT face=新細明體></FONT><FONT face=新細明體></FONT><FONT
face=新細明體></FONT><FONT face=新細明體></FONT><FONT face=新細明體></FONT><BR></DIV>
<DIV>Dear Robert,</DIV>
<DIV>the pseudostems of banana are not very good. I tried to make biogas out
of them but failed. If there is any trick that I am not aware of, please let
me know. I think they are full of phenolic compounds which retard the activity
of the methanogenic micro-organisms.</DIV>
<DIV>Yours</DIV>
<DIV>A.D.Karve<BR><BR></DIV>
<DIV class=gmail_quote>On Mon, Dec 5, 2011 at 12:33 PM, Robert Taylor <SPAN
dir=ltr><<A href="mailto:rt@ms1.hinet.net">rt@ms1.hinet.net</A>></SPAN>
wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>According to info posted on the Digestion list in the past
(courtesy of Ken Calvert, I think), all parts of the banana plant make an
excellent input for anaerobic digestion.<BR><BR>No idea whether the same
applies to the water lilies just mentioned by Crispin.<BR><BR>Robert
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clear=all><BR>-- <BR>***<BR>Dr. A.D. Karve<BR>Trustee & Founder President,
Appropriate Rural Technology Institute (ARTI)<BR><BR><BR>
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