[Stoves] Drawing down the dung pile
frank
frank at compostlab.com
Tue Dec 7 12:25:09 CST 2010
Dear Kevin,
Proteins are more likely to remain in the solid because they are
in-soluble hair like things. There will be no (low) nitrates if the
sample goes anaerobic. Hormones produced for plants are likely from
aerobic microbe conditions -I think. .
Regards
Frank
Kevin wrote:
> Dear Crispin
> Here is an articles on Manure Tea:
> http://www.ask.com/questions-about/Manure-Tea
> I understand that the major beneficial constituents of Manure Tea are:
> * Protein, for direct feeding of soil micro-organisms.
> * Nitrates
> * Hormones beneficial to plant growth
> * Trace elements.
> * Potassium
> It also contains sodium salts, which may aggravate a high sodium
> condition in soils in arid locations.
> I understand that it contains relatively low calcium and phosphorous,
> in that they co-precipitate and would report to the washed dung.
> Best wishes,
> Kevin
>
> ----- Original Message -----
> *From:* Crispin Pemberton-Pigott <mailto:crispinpigott at gmail.com>
> *To:* 'Discussion of biomass cooking stoves'
> <mailto:stoves at lists.bioenergylists.org>
> *Sent:* Tuesday, December 07, 2010 9:42 AM
> *Subject:* Re: [Stoves] Drawing down the dung pile
>
> Dear AD
>
> I think we much ask Frank to comment on this.
>
> Frank can you test calorific value? If not I will try to get the
> power station in UB to test for HHV, ash, volatiles and report
> this week.
>
> Kevin – what washes out? It is probably not a matter of fuel
> conservation as much as making a workable device. It would be nice
> to use as little fuel as possible (fertilizer) but far more
> important to use wasted fuel for a useful purpose.
>
> Frank, what is the CN content of washed v.s. unwashed dung?
>
> Thanks
>
> Crispin
>
> Dear Crispin,
>
> dung cakes are regularly used as fuel even in India. In areas
> where the rainfall is scanty, and there are no trees, dung is used
> as the main cooking fuel. In the high Himalaya, above the tree
> line, yak dung is the only fuel available to the locals. The ash
> content of dung is normally very high. In the case of animals
> eating mainly grass, the ash would consist mainly of silica. I
> have heard of a of filter press, which can remove the water from
> the dung along with the dissolved minerals. This would leave a
> product with a higher calorific value. It can be briquetted and
> sold as a standard fuel.
>
> Yours
>
> A.D.Karve
>
> On Tue, Dec 7, 2010 at 12:47 AM, Crispin Pemberton-Pigott
> <crispinpigott at gmail.com <mailto:crispinpigott at gmail.com>> wrote:
>
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--
Frank Shields
Soil Control Lab
42 Hangar way
Watsonville, CA 95076
(831) 724-5422 tel
(831) 724-3188 fax
frank at compostlab.com
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