[Digestion] le taux de conversion en methane
elamin afilal
afilalamin at yahoo.fr
Thu Mar 31 15:22:02 CDT 2011
bonjour,
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 ?
Merci
---------------------------------------------------
Pr.AFILAL Mohamed Elamin
Université Mohamed Premier
Laboratoire de Biologie des Plantes et Micro-organismes
B.P: 524, 60 000 Oujda MAROC
Mobile : 212-661 087309
Tel fix: 212-536.511354
Fax: 212-536510432
m.afilal at fso.ump.ma
________________________________
De : "digestion-request at lists.bioenergylists.org"
<digestion-request at lists.bioenergylists.org>
À : digestion at lists.bioenergylists.org
Envoyé le : Jeu 31 mars 2011, 19h 00min 02s
Objet : Digestion Digest, Vol 7, Issue 15
Send Digestion mailing list submissions to
digestion at lists.bioenergylists.org
To subscribe or unsubscribe via the World Wide Web, visit
http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org
or, via email, send a message with subject or body 'help' to
digestion-request at lists.bioenergylists.org
You can reach the person managing the list at
digestion-owner at lists.bioenergylists.org
When replying, please edit your Subject line so it is more specific
than "Re: Contents of Digestion digest..."
Today's Topics:
1. density of methane and bottling (Murali Krishna)
2. Re: density of methane and bottling (Paul Harris)
3. Re: density of methane and bottling (Murali Krishna)
4. Re: flame lifting (Deepak D. G.)
5. biogas stove flame (Murali Krishna)
----------------------------------------------------------------------
Message: 1
Date: Thu, 31 Mar 2011 11:46:35 +0530
From: Murali Krishna <bmkrishna6 at gmail.com>
To: Digestion at bioenergylists.org
Subject: [Digestion] density of methane and bottling
Message-ID:
<AANLkTi=KnmN4D7qLvw5Pa69vvUJZsCD9acdaMb+t2jmY at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Hi,
I shall thank you to clarify the follwoing:
The density of methane is shown as 0.67, 0.72 and 1.2 on the web. Presuming
that 1000 cubic meter of methane at 70% in biogas, purified upto 95% and
then compressed what will be the output of gas in kgs. It is likely to be
compressed at three stages upto 180 bar pressure.
Krishna
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/79bc616b/attachment-0001.html>
------------------------------
Message: 2
Date: Thu, 31 Mar 2011 20:52:14 +1030
From: "Paul Harris" <paul.harris at adelaide.edu.au>
To: "'For Discussion of Anaerobic Digestion'"
<digestion at lists.bioenergylists.org>
Subject: Re: [Digestion] density of methane and bottling
Message-ID: <001b01cbef8d$81da84c0$858f8e40$@harris at adelaide.edu.au>
Content-Type: text/plain; charset="us-ascii"
G'day Krishna,
I think the different figures are for different pressures and/or
temperatures, as conventions vary. I have a value of 0.628 kg/m3 at 1.103
kPa and 20C, so 1000 m3 of biogas will become 737 cubic metres of 95%
methane. Ignoring the CO2 will give 700 m3 of methane, weighing about 440
kg. This will be the mass whatever the pressure (unless you have a leak!).
At 180 bar the volume will be approximately 4 cubic metres (at 20C).
Hope this helps,
HOOROO
Mr. Paul Harris, Room 202 Charles Hawker Building, Faculty of Sciences, The
University of Adelaide, Waite Campus, PMB 1, Glen Osmond SA 5064 Ph : +61
8 8303 7880 Fax : +61 8 8303 4386 mailto:paul.harris at adelaide.edu.au
http://www.adelaide.edu.au/directory/paul.harris
CRICOS Provider Number 00123M
This email message is intended only for the addressee(s) and contains
information that may be confidential and/or copyright. If you are not the
intended recipient please notify the sender by reply email and immediately
delete this email. Use, disclosure or reproduction of this email by anyone
other than the intended recipient(s) is strictly prohibited. No
representation is made that this email or any attachments are free of
viruses. Virus scanning is recommended and is the responsibility of the
recipient.
From: digestion-bounces at lists.bioenergylists.org
[mailto:digestion-bounces at lists.bioenergylists.org] On Behalf Of Murali
Krishna
Sent: Thursday, 31 March 2011 4:47 PM
To: Digestion at bioenergylists.org
Subject: [Digestion] density of methane and bottling
Hi,
I shall thank you to clarify the follwoing:
The density of methane is shown as 0.67, 0.72 and 1.2 on the web. Presuming
that 1000 cubic meter of methane at 70% in biogas, purified upto 95% and
then compressed what will be the output of gas in kgs. It is likely to be
compressed at three stages upto 180 bar pressure.
Krishna
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/b2a4432b/attachment-0001.html>
------------------------------
Message: 3
Date: Thu, 31 Mar 2011 20:41:40 +0530
From: Murali Krishna <bmkrishna6 at gmail.com>
To: paul.harris at adelaide.edu.au, For Discussion of Anaerobic Digestion
<digestion at lists.bioenergylists.org>
Subject: Re: [Digestion] density of methane and bottling
Message-ID:
<AANLkTimodb83dvZ9GAsrL0t8dcLkttZgNGXkyA+Gy9+=@mail.gmail.com>
Content-Type: text/plain; charset="windows-1252"
Good day Paul,
Thank you for your prompt reply.
How have you arrived at 440 kg weight from 700 m3 of methane? Will you
please elaborate?
Regards,
Krishna
On Thu, Mar 31, 2011 at 3:52 PM, Paul Harris <paul.harris at adelaide.edu.au>wrote:
> G?day Krishna,
>
>
>
> I think the different figures are for different pressures and/or
> temperatures, as conventions vary. I have a value of 0.628 kg/m3 at 1.103
> kPa and 20C, so 1000 m3 of biogas will become 737 cubic metres of 95%
> methane. Ignoring the CO2 will give 700 m3 of methane, weighing about 440
> kg. This will be the mass whatever the pressure (unless you have a leak!).
> At 180 bar the volume will be approximately 4 cubic metres (at 20C).
>
>
>
> Hope this helps,
>
> HOOROO
>
>
>
> Mr. Paul Harris, Room 202 Charles Hawker Building, Faculty of Sciences,
> The University of Adelaide, Waite Campus, PMB 1, Glen Osmond SA 5064 Ph
> : +61 8 8303 7880 Fax : +61 8 8303 4386
> mailto:paul.harris at adelaide.edu.au <paul.harris at adelaide.edu.au>
> http://www.adelaide.edu.au/directory/paul.harris
>
>
>
> CRICOS Provider Number 00123M
>
> This email message is intended only for the addressee(s) and contains
> information that may be confidential and/or copyright. If you are not the
> intended recipient please notify the sender by reply email and immediately
> delete this email. Use, disclosure or reproduction of this email by anyone
> other than the intended recipient(s) is strictly prohibited. No
> representation is made that this email or any attachments are free of
> viruses. Virus scanning is recommended and is the responsibility of the
> recipient.
>
>
>
> *From:* digestion-bounces at lists.bioenergylists.org [mailto:
> digestion-bounces at lists.bioenergylists.org] *On Behalf Of *Murali Krishna
> *Sent:* Thursday, 31 March 2011 4:47 PM
> *To:* Digestion at bioenergylists.org
> *Subject:* [Digestion] density of methane and bottling
>
>
>
> Hi,
>
> I shall thank you to clarify the follwoing:
>
> The density of methane is shown as 0.67, 0.72 and 1.2 on the web.
> Presuming that 1000 cubic meter of methane at 70% in biogas, purified upto
> 95% and then compressed what will be the output of gas in kgs. It is likely
> to be compressed at three stages upto 180 bar pressure.
>
> Krishna
>
> _______________________________________________
> Digestion mailing list
>
> to Send a Message to the list, use the email address
> Digestion at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
>http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org
>g
>
> for more information about digestion, see
> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> and the Biogas Wiki http://biogas.wikispaces.com/
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/200949ac/attachment-0001.html>
------------------------------
Message: 4
Date: Thu, 31 Mar 2011 23:31:27 +0800
From: "Deepak D. G." <ghindwani at gmail.com>
To: digestion at lists.bioenergylists.org
Subject: Re: [Digestion] flame lifting
Message-ID: <4D949E4F.1050308 at gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Dear listeners,
I would like to consult on a issue of flame lifting.
I have installed 8 floating digesters and all are working well and the
gas production is also very good.
The only issue I have right now is the flame lifting issue, specially
with the latest installation. The latest installation, in a village in
Bali, has a capacity of 1000 liter gas tank and the distance between
the structure and the stove is about 20 meters. I used a combination of
a plastic tube and pvc of equal size and that is 1/2".
I can not get the flame burned immediately above the surface of the
burner but it is lifting. I have tried the same stove at home in which
the distance between the biogas and the stove is about 8 meters and
the flame is stable and not lifting.
Can anybody suggest solutions to this issue? thanks
Rgds,
Deepak
------------------------------
Message: 5
Date: Thu, 31 Mar 2011 22:51:59 +0530
From: Murali Krishna <bmkrishna6 at gmail.com>
To: Digestion at bioenergylists.org
Subject: [Digestion] biogas stove flame
Message-ID:
<AANLkTi=cM5+vhPq8Chi6ts8zSjJ1P-Ghr=rMryxARA2K at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Dear Deepak,
Go through the following link. You will get a fair idea of gas stoves.
*
http://www.kingdombio.com/BiogasBurner1.pdf*
Hope this helps you.
Krishna
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/50b81116/attachment-0001.html>
------------------------------
_______________________________________________
Digestion mailing list
to Send a Message to the list, use the email address
Digestion at bioenergylists.org
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org
for more information about digestion, see
Beginner's Guide to Biogas
http://www.adelaide.edu.au/biogas/
and the Biogas Wiki http://biogas.wikispaces.com/
End of Digestion Digest, Vol 7, Issue 15
****************************************
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20110331/16318ecf/attachment.html>
More information about the Digestion
mailing list