[Digestion] Biogas plant at Zoo

[paul perrin]

What I have read does say that human waste is pretty useless for biogas (I
saw a figure of 1 cubic foot per day from one humans waste) - but I
understand that animal like elephants have massively inefficient digestion
systems (much food passing through almost entirely undigested) so their
dung will be entirely different and contain much more raw ingredients for
biogas generation (would dried elephant dung even burn?). There is a
calculation to be done, and it can't be based on 'averages' across species.


On 27 June 2013 20:28, Anand Karve <adkarve at gmail.com> wrote:

> Dear Rabin,
> all animals, including humans, function as live biogas plants. The fecal
> matter represents slurry coming out of a biogas plant. Using animal dung as
> feedstock in a biogas plant is a highly inefficient way of producing
> biogas. You get about 800 litres biogas from just 1 kg starch. To get the
> same amount of biogas from cattle dung, you need 40 kg of it. One gets much
> more energy from dung if it can be dehydrated and burned directly
> Yours
> A.D.Karve
> On Wed, Jun 26, 2013 at 11:35 AM, Rabin Shrestha <rshrestha at winrock.org.np
> > wrote:
>
>>  Hello,****
>>
>> ** **
>>
>> Will it be a good idea to install biogas plant at zoo to manage and
>> generate energy from the animal waste in the zoo???****
>>
>> ** **
>>
>> Regards,****
>>
>> Rabin****
>>
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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)
>
>
> _______________________________________________
> Digestion mailing list
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> to Send a Message to the list, use the email address
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> to UNSUBSCRIBE or Change your List Settings use the web page
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> 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/
>
>
>
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