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<DIV>bonjour,</DIV>
<DIV>sachant que la biomethanisation est une succession d'étapes, et donc tous dépend de la première? est ce que lors des étapes suivantes, la première est totalement arrêté? la première étape d'hydrolyse à besoin d'O2, et la dernière étape ne tolère pas l'O2, donc une fois l'O2 est épuisé, les autres phases démarrent? c'est ça l'explication pourquoi la formule de BUSWEL donne toujours un taux de conversion théorique plus élevé que l'expérience? est ce que vous avez une autre explication ?<BR> </DIV>
<DIV>Merci</DIV>
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<DIV><SPAN style="FONT-STYLE: italic; FONT-FAMILY: times new roman; FONT-WEIGHT: bold"><FONT color=#7f7f00 size=1 face="arial, helvetica, sans-serif"><FONT color=#000000>Pr.AFILAL Mohamed Elamin <BR></FONT><FONT color=#000000>Université Mohamed Premier </FONT></FONT>
<DIV><FONT color=#000000 size=1 face="arial, helvetica, sans-serif">Laboratoire de Biologie des Plantes et Micro-organismes</FONT></DIV>
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<B><SPAN style="FONT-WEIGHT: bold">De :</SPAN></B> "digestion-request@lists.bioenergylists.org" <digestion-request@lists.bioenergylists.org><BR><B><SPAN style="FONT-WEIGHT: bold">À :</SPAN></B> digestion@lists.bioenergylists.org<BR><B><SPAN style="FONT-WEIGHT: bold">Envoyé le :</SPAN></B> Jeu 31 mars 2011, 19h 00min 02s<BR><B><SPAN style="FONT-WEIGHT: bold">Objet :</SPAN></B> Digestion Digest, Vol 7, Issue 15<BR></FONT><BR>Send Digestion mailing list submissions to<BR> <A href="mailto:digestion@lists.bioenergylists.org" ymailto="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</A><BR><BR>To subscribe or unsubscribe via the World Wide Web, visit<BR> <A href="http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org" target=_blank>http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org</A><BR><BR>or, via email, send a message
with subject or body 'help' to<BR> <A href="mailto:digestion-request@lists.bioenergylists.org" ymailto="mailto:digestion-request@lists.bioenergylists.org">digestion-request@lists.bioenergylists.org</A><BR><BR>You can reach the person managing the list at<BR> <A href="mailto:digestion-owner@lists.bioenergylists.org" ymailto="mailto:digestion-owner@lists.bioenergylists.org">digestion-owner@lists.bioenergylists.org</A><BR><BR>When replying, please edit your Subject line so it is more specific<BR>than "Re: Contents of Digestion digest..."<BR><BR><BR>Today's Topics:<BR><BR> 1. density of methane and bottling (Murali Krishna)<BR> 2. Re: density of methane and bottling (Paul Harris)<BR> 3. Re: density of methane and bottling (Murali Krishna)<BR> 4. Re: flame lifting (Deepak D. G.)<BR> 5. biogas stove flame (Murali
Krishna)<BR><BR><BR>----------------------------------------------------------------------<BR><BR>Message: 1<BR>Date: Thu, 31 Mar 2011 11:46:35 +0530<BR>From: Murali Krishna <<A href="mailto:bmkrishna6@gmail.com" ymailto="mailto:bmkrishna6@gmail.com">bmkrishna6@gmail.com</A>><BR>To: <A href="mailto:Digestion@bioenergylists.org" ymailto="mailto:Digestion@bioenergylists.org">Digestion@bioenergylists.org</A><BR>Subject: [Digestion] density of methane and bottling<BR>Message-ID:<BR> <AANLkTi=KnmN4D7qLvw5Pa69vvUJZsCD9acdaMb+<A href="mailto:t2jmY@mail.gmail.com" ymailto="mailto:t2jmY@mail.gmail.com">t2jmY@mail.gmail.com</A>><BR>Content-Type: text/plain; charset="iso-8859-1"<BR><BR>Hi,<BR><BR>I shall thank you to clarify the follwoing:<BR><BR>The density of methane is shown as 0.67, 0.72 and 1.2 on the web. Presuming<BR>that 1000 cubic meter of methane at 70% in biogas, purified upto 95% and<BR>then compressed what
will be the output of gas in kgs. It is likely to be<BR>compressed at three stages upto 180 bar pressure.<BR><BR>Krishna<BR>-------------- next part --------------<BR>An HTML attachment was scrubbed...<BR>URL: <<A href="http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/79bc616b/attachment-0001.html" target=_blank>http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/79bc616b/attachment-0001.html</A>><BR><BR>------------------------------<BR><BR>Message: 2<BR>Date: Thu, 31 Mar 2011 20:52:14 +1030<BR>From: "Paul Harris" <<A href="mailto:paul.harris@adelaide.edu.au" ymailto="mailto:paul.harris@adelaide.edu.au">paul.harris@adelaide.edu.au</A>><BR>To: "'For Discussion of Anaerobic Digestion'"<BR> <<A href="mailto:digestion@lists.bioenergylists.org"
ymailto="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</A>><BR>Subject: Re: [Digestion] density of methane and bottling<BR>Message-ID: <001b01cbef8d$81da84c0$858f8e40$@<A href="mailto:harris@adelaide.edu.au" ymailto="mailto:harris@adelaide.edu.au">harris@adelaide.edu.au</A>><BR>Content-Type: text/plain; charset="us-ascii"<BR><BR>G'day Krishna,<BR><BR><BR><BR>I think the different figures are for different pressures and/or<BR>temperatures, as conventions vary. I have a value of 0.628 kg/m3 at 1.103<BR>kPa and 20C, so 1000 m3 of biogas will become 737 cubic metres of 95%<BR>methane. Ignoring the CO2 will give 700 m3 of methane, weighing about 440<BR>kg. This will be the mass whatever the pressure (unless you have a leak!).<BR>At 180 bar the volume will be approximately 4 cubic metres (at 20C).<BR><BR><BR><BR>Hope this helps,<BR><BR>HOOROO<BR><BR><BR><BR>Mr. Paul Harris, Room 202 Charles Hawker Building, Faculty of
Sciences, The<BR>University of Adelaide, Waite Campus, PMB 1, Glen Osmond SA 5064 Ph : +61<BR>8 8303 7880 Fax : +61 8 8303 4386 mailto:<A href="mailto:paul.harris@adelaide.edu.au" ymailto="mailto:paul.harris@adelaide.edu.au">paul.harris@adelaide.edu.au</A><BR><A href="http://www.adelaide.edu.au/directory/paul.harris" target=_blank>http://www.adelaide.edu.au/directory/paul.harris</A><BR><BR><BR><BR>CRICOS Provider Number 00123M<BR><BR>This email message is intended only for the addressee(s) and contains<BR>information that may be confidential and/or copyright. If you are not the<BR>intended recipient please notify the sender by reply email and immediately<BR>delete this email. Use, disclosure or reproduction of this email by anyone<BR>other than the intended recipient(s) is strictly prohibited. No<BR>representation is made that this email or any attachments are free of<BR>viruses. Virus scanning is recommended
and is the responsibility of the<BR>recipient.<BR><BR><BR><BR>From: <A href="mailto:digestion-bounces@lists.bioenergylists.org" ymailto="mailto:digestion-bounces@lists.bioenergylists.org">digestion-bounces@lists.bioenergylists.org</A><BR>[mailto:<A href="mailto:digestion-bounces@lists.bioenergylists.org" ymailto="mailto:digestion-bounces@lists.bioenergylists.org">digestion-bounces@lists.bioenergylists.org</A>] On Behalf Of Murali<BR>Krishna<BR>Sent: Thursday, 31 March 2011 4:47 PM<BR>To: <A href="mailto:Digestion@bioenergylists.org" ymailto="mailto:Digestion@bioenergylists.org">Digestion@bioenergylists.org</A><BR>Subject: [Digestion] density of methane and bottling<BR><BR><BR><BR>Hi,<BR><BR>I shall thank you to clarify the follwoing:<BR><BR>The density of methane is shown as 0.67, 0.72 and 1.2 on the web. Presuming<BR>that 1000 cubic meter of methane at 70% in biogas, purified upto 95% and<BR>then compressed what will be the output of gas in
kgs. It is likely to be<BR>compressed at three stages upto 180 bar pressure.<BR><BR>Krishna<BR><BR>-------------- next part --------------<BR>An HTML attachment was scrubbed...<BR>URL: <<A href="http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/b2a4432b/attachment-0001.html" target=_blank>http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/b2a4432b/attachment-0001.html</A>><BR><BR>------------------------------<BR><BR>Message: 3<BR>Date: Thu, 31 Mar 2011 20:41:40 +0530<BR>From: Murali Krishna <<A href="mailto:bmkrishna6@gmail.com" ymailto="mailto:bmkrishna6@gmail.com">bmkrishna6@gmail.com</A>><BR>To: <A href="mailto:paul.harris@adelaide.edu.au" ymailto="mailto:paul.harris@adelaide.edu.au">paul.harris@adelaide.edu.au</A>, For Discussion of Anaerobic Digestion<BR> <<A href="mailto:digestion@lists.bioenergylists.org"
ymailto="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</A>><BR>Subject: Re: [Digestion] density of methane and bottling<BR>Message-ID:<BR> <AANLkTimodb83dvZ9GAsrL0t8dcLkttZgNGXkyA+Gy9+=@mail.gmail.com><BR>Content-Type: text/plain; charset="windows-1252"<BR><BR>Good day Paul,<BR><BR>Thank you for your prompt reply.<BR><BR>How have you arrived at 440 kg weight from 700 m3 of methane? Will you<BR>please elaborate?<BR><BR>Regards,<BR><BR>Krishna<BR><BR><BR><BR><BR>On Thu, Mar 31, 2011 at 3:52 PM, Paul Harris <<A href="mailto:paul.harris@adelaide.edu.au" ymailto="mailto:paul.harris@adelaide.edu.au">paul.harris@adelaide.edu.au</A>>wrote:<BR><BR>> G?day Krishna,<BR>><BR>><BR>><BR>> I think the different figures are for different pressures and/or<BR>> temperatures, as conventions vary. I have a value of 0.628 kg/m3 at 1.103<BR>> kPa and 20C, so 1000 m3 of biogas will
become 737 cubic metres of 95%<BR>> methane. Ignoring the CO2 will give 700 m3 of methane, weighing about 440<BR>> kg. This will be the mass whatever the pressure (unless you have a leak!).<BR>> At 180 bar the volume will be approximately 4 cubic metres (at 20C).<BR>><BR>><BR>><BR>> Hope this helps,<BR>><BR>> HOOROO<BR>><BR>><BR>><BR>> Mr. Paul Harris, Room 202 Charles Hawker Building, Faculty of Sciences,<BR>> The University of Adelaide, Waite Campus, PMB 1, Glen Osmond SA 5064 Ph<BR>> : +61 8 8303 7880 Fax : +61 8 8303 4386<BR>> mailto:<A href="mailto:paul.harris@adelaide.edu.au" ymailto="mailto:paul.harris@adelaide.edu.au">paul.harris@adelaide.edu.au</A> <<A href="mailto:paul.harris@adelaide.edu.au" ymailto="mailto:paul.harris@adelaide.edu.au">paul.harris@adelaide.edu.au</A>><BR>> <A href="http://www.adelaide.edu.au/directory/paul.harris"
target=_blank>http://www.adelaide.edu.au/directory/paul.harris</A><BR>><BR>><BR>><BR>> CRICOS Provider Number 00123M<BR>><BR>> This email message is intended only for the addressee(s) and contains<BR>> information that may be confidential and/or copyright. If you are not the<BR>> intended recipient please notify the sender by reply email and immediately<BR>> delete this email. Use, disclosure or reproduction of this email by anyone<BR>> other than the intended recipient(s) is strictly prohibited. No<BR>> representation is made that this email or any attachments are free of<BR>> viruses. Virus scanning is recommended and is the responsibility of the<BR>> recipient.<BR>><BR>><BR>><BR>> *From:* <A href="mailto:digestion-bounces@lists.bioenergylists.org" ymailto="mailto:digestion-bounces@lists.bioenergylists.org">digestion-bounces@lists.bioenergylists.org</A> [mailto:<BR>> <A
href="mailto:digestion-bounces@lists.bioenergylists.org" ymailto="mailto:digestion-bounces@lists.bioenergylists.org">digestion-bounces@lists.bioenergylists.org</A>] *On Behalf Of *Murali Krishna<BR>> *Sent:* Thursday, 31 March 2011 4:47 PM<BR>> *To:* <A href="mailto:Digestion@bioenergylists.org" ymailto="mailto:Digestion@bioenergylists.org">Digestion@bioenergylists.org</A><BR>> *Subject:* [Digestion] density of methane and bottling<BR>><BR>><BR>><BR>> Hi,<BR>><BR>> I shall thank you to clarify the follwoing:<BR>><BR>> The density of methane is shown as 0.67, 0.72 and 1.2 on the web.<BR>> Presuming that 1000 cubic meter of methane at 70% in biogas, purified upto<BR>> 95% and then compressed what will be the output of gas in kgs. It is likely<BR>> to be compressed at three stages upto 180 bar pressure.<BR>><BR>> Krishna<BR>><BR>> _______________________________________________<BR>>
Digestion mailing list<BR>><BR>> to Send a Message to the list, use the email address<BR>> <A href="mailto:Digestion@bioenergylists.org" ymailto="mailto:Digestion@bioenergylists.org">Digestion@bioenergylists.org</A><BR>><BR>> to UNSUBSCRIBE or Change your List Settings use the web page<BR>><BR>> <A href="http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org" target=_blank>http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org</A><BR>><BR>> for more information about digestion, see<BR>> Beginner's Guide to Biogas<BR>> <A href="http://www.adelaide.edu.au/biogas/" target=_blank>http://www.adelaide.edu.au/biogas/</A><BR>> and the Biogas Wiki <A href="http://biogas.wikispaces.com/" target=_blank>http://biogas.wikispaces.com/</A><BR>><BR>><BR>><BR>-------------- next part --------------<BR>An HTML attachment was scrubbed...<BR>URL: <<A
href="http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/200949ac/attachment-0001.html" target=_blank>http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/200949ac/attachment-0001.html</A>><BR><BR>------------------------------<BR><BR>Message: 4<BR>Date: Thu, 31 Mar 2011 23:31:27 +0800<BR>From: "Deepak D. G." <<A href="mailto:ghindwani@gmail.com" ymailto="mailto:ghindwani@gmail.com">ghindwani@gmail.com</A>><BR>To: <A href="mailto:digestion@lists.bioenergylists.org" ymailto="mailto:digestion@lists.bioenergylists.org">digestion@lists.bioenergylists.org</A><BR>Subject: Re: [Digestion] flame lifting<BR>Message-ID: <<A href="mailto:4D949E4F.1050308@gmail.com" ymailto="mailto:4D949E4F.1050308@gmail.com">4D949E4F.1050308@gmail.com</A>><BR>Content-Type: text/plain; charset=ISO-8859-1; format=flowed<BR><BR>Dear listeners,<BR><BR>I would like to consult on a
issue of flame lifting.<BR><BR>I have installed 8 floating digesters and all are working well and the <BR>gas production is also very good.<BR><BR>The only issue I have right now is the flame lifting issue, specially <BR>with the latest installation. The latest installation, in a village in <BR>Bali, has a capacity of 1000 liter gas tank and the distance between <BR>the structure and the stove is about 20 meters. I used a combination of <BR>a plastic tube and pvc of equal size and that is 1/2".<BR><BR>I can not get the flame burned immediately above the surface of the <BR>burner but it is lifting. I have tried the same stove at home in which <BR>the distance between the biogas and the stove is about 8 meters and <BR>the flame is stable and not lifting.<BR><BR>Can anybody suggest solutions to this issue? thanks<BR><BR>Rgds,<BR>Deepak<BR><BR><BR><BR><BR>------------------------------<BR><BR>Message: 5<BR>Date: Thu, 31 Mar 2011
22:51:59 +0530<BR>From: Murali Krishna <<A href="mailto:bmkrishna6@gmail.com" ymailto="mailto:bmkrishna6@gmail.com">bmkrishna6@gmail.com</A>><BR>To: <A href="mailto:Digestion@bioenergylists.org" ymailto="mailto:Digestion@bioenergylists.org">Digestion@bioenergylists.org</A><BR>Subject: [Digestion] biogas stove flame<BR>Message-ID:<BR> <AANLkTi=cM5+vhPq8Chi6ts8zSjJ1P-Ghr=<A href="mailto:rMryxARA2K@mail.gmail.com" ymailto="mailto:rMryxARA2K@mail.gmail.com">rMryxARA2K@mail.gmail.com</A>><BR>Content-Type: text/plain; charset="iso-8859-1"<BR><BR>Dear Deepak,<BR><BR><BR><BR>Go through the following link. You will get a fair idea of gas stoves.<BR><BR>*<BR><A href="http://www.kingdombio.com/BiogasBurner1.pdf*" target=_blank>http://www.kingdombio.com/BiogasBurner1.pdf*</A><BR><BR>Hope this helps you.<BR><BR>Krishna<BR>-------------- next part --------------<BR>An HTML attachment was scrubbed...<BR>URL: <<A
href="http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/50b81116/attachment-0001.html" target=_blank>http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/50b81116/attachment-0001.html</A>><BR><BR>------------------------------<BR><BR>_______________________________________________<BR>Digestion mailing list<BR><BR>to Send a Message to the list, use the email address<BR><A href="mailto:Digestion@bioenergylists.org" ymailto="mailto:Digestion@bioenergylists.org">Digestion@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/digestion_lists.bioenergylists.org" target=_blank>http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org</A><BR><BR>for more information about digestion, see<BR>Beginner's Guide to Biogas<BR><A
href="http://www.adelaide.edu.au/biogas/" target=_blank>http://www.adelaide.edu.au/biogas/</A><BR>and the Biogas Wiki <A href="http://biogas.wikispaces.com/" target=_blank>http://biogas.wikispaces.com/</A><BR><BR><BR><BR>End of Digestion Digest, Vol 7, Issue 15<BR>****************************************<BR></DIV></DIV></div></body></html>