[Digestion] The biology of biogas production

Randy Mott randymott at ceeres.eu
Tue Mar 22 02:53:20 CDT 2011


Gasan,

 

You interested in teaming on some projects there? I have to check the
support system, but we will be expanding in 2012. We do investment, design,
build and operate. Danish technology..

 

Randy Mott

CEERES

Warsaw

 

From: digestion-bounces at lists.bioenergylists.org
[mailto:digestion-bounces at lists.bioenergylists.org] On Behalf Of Gasan
Osojnik
Sent: Tuesday, March 22, 2011 7:24 AM
To: digestion at lists.bioenergylists.org
Cc: digestion-request at lists.bioenergylists.org
Subject: [Digestion] The biology of biogas production

 

Hi Mohamed,

The general (though I am sure there will be other interpretations) mechanism
of biogas formation is 4-step and involves:
1. Hydrolysis (degradation of polymers)
2. Acidogenesis (the formation of volatile fatty acids - low molecular
carboxylic acids)
3. Acetogenesis (the formation of acetate, CO2 and H2)
4. Methanogenesis (from acetete -> CO2 and CH4 is formed, from CO2 and H2 ->
CH4 is formed, methanogenesis from acetate and CO2+H2 has to run
simultaneously for the proces to be stable) 

The last step is the reason why there will be always some CO2 in biogas.
Each of this steps is carried out by different groups of microorganisms.

So the initial biochemical sources of biogas are carbohydrates, proteins,
fats etc. In the long run, any substance that can be converted
intermediately either to dissolved CO2 and H2 or to acetate is appropriate
for biogas production.

BR from Slovenia, Gasan

 

Ilja Gasan OSOJNIK ČRNIVEC, L05 - Laboratory for Environmental Sciences and
Engineering 

 

KI+letokemije.jpg

 

National Institute of Chemistry

Hajdrihova 19

SI-1001 Ljubljana

 

Tel.: (01) 47 60 239

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Fax: (01) 47 60 300

 

www.ki.si/en

 

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iku. Če vam sporočilo ni bilo namenjeno, ni dovoljeno razkrivanje, nadaljnje
pošiljanje ali drugačna uporaba oziroma predelava posredovanih informacij. V
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Kemijski inštitut ne prevzema odgovornosti za napake v prenosu. 

 

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On 21 March 2011 20:00, <digestion-request at lists.bioenergylists.org> wrote:

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Today's Topics:

  1. introduction (elamin afilal)


----------------------------------------------------------------------

Message: 1
Date: Mon, 21 Mar 2011 16:45:22 +0000 (GMT)
From: elamin afilal <afilalamin at yahoo.fr>
To: digestion at lists.bioenergylists.org
Subject: [Digestion] introduction
Message-ID: <38511.70590.qm at web26307.mail.ukl.yahoo.com>
Content-Type: text/plain; charset="iso-8859-1"

?Hi
I am interested by the anaerobic digestion, I hope?producing sufisament of
biogas from the organic wast in Morocco
But I would previously like to be able to answer many questions as: what
chemical constituent(component) bacteria attack in the first ? The biogas
results initially from carbohydrates in the first?or all the constituents
are
attacked at the same?time??

Thanks
Sory for this bad englich

?---------------------------------------------------
AFILAL Mohamed Elamin



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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 10
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