[Digestion] Solar Heated Batch Bladder Digester for Poultry

Anand Karve adkarve at gmail.com
Mon May 23 09:53:57 CDT 2011

Dear Paul,
thanks for this information. I am aware of the fact that a lot of
antibiotics are mixed with poultry feed. That explains why poultry
manure has no methanogens.
On Mon, May 23, 2011 at 2:34 PM, Paul Harris
<paul.harris at adelaide.edu.au> wrote:
> G'day All,
> I don't think poultry manure has methanogens (Once I tried layer manure
> collected from the floor and it did not start, but the same happened for
> cattle manure with antibiotics - the dairy cattle manure did eventually
> start up though). I have also been told that kangaroos don't have
> methanogens in their gut.
> I also recall a conversation about human digestive systems that indicated
> that some of us have "better" methanogenic populations than others (but I
> may be wrong here!) so a trial may be the best thing.
> Happy digesting,
> Mr. Paul Harris, Room 202 Charles Hawker Building, Faculty of Sciences, The
> University of Adelaide, Waite Campus, PMB 1, Glen Osmond SA 5064 Ph    : +61
> 8 8303 7880      Fax   : +61 8 8303 4386
> mailto:paul.harris at adelaide.edu.au
> http://www.adelaide.edu.au/directory/paul.harris
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> -----Original Message-----
> From: digestion-bounces at lists.bioenergylists.org
> [mailto:digestion-bounces at lists.bioenergylists.org] On Behalf Of Anand Karve
> Sent: Monday, 23 May 2011 12:51 PM
> To: For Discussion of Anaerobic Digestion
> Subject: Re: [Digestion] Solar Heated Batch Bladder Digester for Poultry
> Dear Steven,
> In shops selling material for building construction, you would get
> plastic water tanks. I have seen tanks of even 50, 000 litres (about
> 11,000 gallons). They can be kept above ground and you can use them as
> digesters. Just build a plastic greenhouse-like structure or a
> geodesic dome around this tank for passive solar heating. The fecal
> matter of all animals contains methanogenic archaea, so there won't be
> any need to use a culture. One time filling is O.K. I have seen that
> large tanks filled with cattle dung plus other digestible matter yield
> a steady output of biogas continuously for 6 months to a year. Ammonia
> should not interfere with the process of digestion. It would go out of
> the system along with the biogas. This is how the land fills work.
> Please keep us informed of the progress of your project.
> Yours
> A.D.Karve
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> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> and the Biogas Wiki http://biogas.wikispaces.com/

Dr. A.D. Karve
President, Appropriate Rural Technology Institute (ARTI)

*Please change my email address in your records to: adkarve at gmail.com *

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