[Digestion] Elefant Dung?

[Murali Krishna]

Dear David,

I worked for about a month on elephant dung.  This project is not related
to study of biogas yields but for developing a suitable culture of
decomposing microbes at farm level conditions.  As elephant is a non
ruminant,  the dung is full of  fibers with little mositure.  It is almost
like a ball of fibres with little moisture.  If I rember correct it has 50
to 60% moisture because when I pressed it there is not water but for
moisture.

I think you need to add nitrogenous material to balance carbon:nitrogen
ratio.  It is bound to yield higher amount of gas than cattle manure.  You
can follow the same type of anaerobic digestion  that you usually apply to
grass clippings, green corn stems, etc.  Mascerate it to fine particles,
balance C:N and put into the digester.  Alternatively increase SRT in the
digester with a conical bottom with a grit evacuation chamber.  There
should not be any problem at all.

Please keep the digestion list posted with your results.

Regards and best wishes,

Krishna.
:

On Fri, May 18, 2012 at 9:16 PM, David <david at h4c.org> wrote:

>
> Alex,
>
> On 5/17/2012 8:22 PM, Alexander Eaton wrote:
>
> Any data or thoughts on this?  We are doing a really cool zoo project, and
> we will be testing a number of animal wastes, one being Elefant (hippo also
> included).
>
>
> Work has been done on this by researchers working at the Toronto, Denver
> and Portland OR zoos, among others.
>
> I know of at least three freely available papers that bear (pun intended)
> on the issue (as previously):
>
>  “Energy Production from Zoo Animal Wastes”, Klasson and Nghiem, 2003
> (poster here <http://www.ornl.gov/sci/eere/PDFs/Zoodoopost.pdf>, paper
> here <http://www.rhinoresourcecenter.com/pdf_files/123/1238059703.pdf>)
>
> "Biogas from elephant dung: a means of mitigating human-elephant
> conflict", Wijeyamohan (here<http://www.asesg.org/PDFfiles/Gajah/22-62-Wijeyamohan.pdf>
> )
>
> "Biogas as Renewable Energy from Organic Wastes", Karki et al (here<http://www.eolss.net/Sample-Chapters/C17/E6-58-09-10.pdf>
> )
>
>
> And another, hard to find on-line:
>
>  "Biogas Production from Elephant Dung at the National Elephant Institute
> Project", by The National Elephant Institute (Thailand)
>
>
> d.
>
>
>
> --
> David William House
>  "The Complete Biogas Handbook" www.completebiogas.com
> *Vahid Biogas*, an alternative energy consultancy www.vahidbiogas.com
>
>  "Make no search for water.       But find thirst,
> And water from the very ground will burst."
> (Rumi, a Persian mystic poet, quoted in *Delight of Hearts*, p. 77)
>
> http://bahai.us/
>
> _______________________________________________
> 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/
>
>
>


-- 
Regards.

Murali Krishna
Chairman
Hyderabad, Andhra Pradesh, India.
Ph:+91-40-24339999, 24333333,243355555, 24333555
www.villagevisionindia.com
*

*
*
*
**
*
*
* **Never put water down the drain when there may be another use for it*
*Save the Environment*

*
*
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/digestion_lists.bioenergylists.org/attachments/20120519/3c2182c7/attachment.html>