[Digestion] Elefant Dung?

Anand Karve adkarve at gmail.com
Fri May 18 20:10:24 CDT 2012


Dear Alex,
our Institute constructed an ARTI type biogas plant (constructed from two
plastic water tanks) for a college of veterinary science, in Mumbai.
This biogas plant has been provided with an additional tank with a stirrer,
in which the dung is first mixed with an appropriate quantity of water to
make a slurry. This slurry is then let into the biogas plant. This
plant accepts dung of a large variety of animals, and I am quite sure that
it would also work on elephant dung. Removal of fibrous residue from a
biogas plant is a problem, which we often face if green leaves are used as
feedstock. The midribs and veins have lignin in them and they are not
digested. This material has to be removed from the digester at regular
intervals by opening a drain valve specially provided for this purpose.
Yours
A.D.Karve

On Fri, May 18, 2012 at 11:46 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/
>
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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/
>
>
>


-- 
***
Dr. A.D. Karve
Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
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