[Digestion] Digestion Digest, Vol 2, Issue 29

Markus Schlattmann firmen at schlattmann.de
Sat Oct 9 07:31:02 PDT 2010


  It depends. In agricultural biogas plants for example most of the 
methane comes also from H2/CO2.
The acetate is taken up by acetate oxidizing organisms.

Markus


Am 08.10.2010 21:29, schrieb finstein at envsci.rutgers.edu:
> It is interesting to compare the flow of carbon in the ruminant with that
> of the anaerobic digester. In the animal the main source of methane is
> H2/CO2; little comes from acetate. The acetate passes through the
> intestinal wall to enter the bloodstream, where it is aerobically
> metabolized as a primary carbon and energy source. That's the "idea" of
> being a ruminant. In the AD, approx. 2/3 of the methane comes from acetate
> and most of the remainder from H2/CO2. Where else would the acetate and
> other simple breakdown products go?
>
> Mel
>
>
>> I also noticed in an earlier post the comment about methanogens being
>> present in our digestive tract (I agree that they are), but why? I think
>> it
>> has been suggested they balance the H+ and H2 system so our digestive
>> system
>> can operate (so they may be "good" bugs) but it may also be that we
>> provide
>> an environment for their survival so they compete for nutrients. I know
>> CSIRO have done work on reducing methane emissions from cattle so I will
>> try
>> to follow that up and I will also ask a gastroenterology colleague here as
>> well, but comments are welcome.
>
>
> _______________________________________________
> 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/
>
>


-- 

Mit freundlichen Grüßen,
Markus Schlattmann

--------------------------------------
schlattmann sustainables
schlattmann.de

Dipl.-Ing. agr. Markus Schlattmann
Grünseiboldsdorfer Weg 5
85416 Langenbach

Tel.: +49 (0)8761 72162-60
Fax.: +49 (0)8761 72162-61

E-Mail: firmen at schlattmann de
Web:www.schlattmann.de
-------------------------------------

Die Informationen in dieser E-Mail und im Anhang sind vertraulich und
nur für den/die benannten Empfänger bestimmt. Öffnen, Nutzen oder
Verbreiten durch unautorisierte Personen ist untersagt. Falls Sie nicht
der Empfänger oder eine entsprechend autorisierte Person sind,
informieren Sie bitte den Absender und vernichten Sie die Nachricht.


The information in this email and in any attachment is confidential and
intended only for the attention and use of the recipient(s) as
addressed. It must not be disclosed, used or disseminated by any
unauthorized person. If you are not the intended recipient or
accordingly authorized, please contact the sender and delete the
message.





More information about the Digestion mailing list