Stovers,
I have washed a lot of dung and compost. We like to have it clean : )
When doing weed seed testing we wash out all the salts and soluble
organics that, if remained, can make the mix go anaerobic. We wash until
the electrical conductivity is less than 1 mmhos/cm. Then place the mud
on a bed of sand to let drain and air both above and below. Then add
seeds to one corner to make sure if there were weed seeds they have the
conditions to grow.
The washing is done by the following: Place dung in a five gallon
bucket., fill with water and mix. Prepare a smaller plastic bucket by
cutting out the bottom , duct tape a fine mesh screen over the bottom.
With up-N-down motion move the smaller bucked down through the muddy
water. The up-N-down keeps the screen clean. The water that goes into
the small bucket is removed by a smaller bucket until as much of the
water as possible is removed. Then repeat the process until the water is
clear or the EC is below one mmhos/cm.
Frank
Kevin wrote:
Dear Crispin
Years and years ago, I started a thread about using dung fuels and
interest in it was very conspicuous by its absence. From what I can
understand, dung fuels are about the worst possible fuel, "as is",
because of moisture and chlorides. Moisture makes for difficult
burning, and chlorides make dioxins. Also, the very people who are so
desperate as to need to burn dung for fuels are usually the same
people who are equivalently desperate for fertilizer. I understand
also that blindness is very common with Indian Women who have been
using dung fuels.
I advocated washing the dung, to extract the solubles, and then using
the water extract as a liquid fertilizer. Then dry the residue, for
use as a fuel. It should then be a superior fuel to wood, in that it
would have a higher percentage of lignin, which has a higher heating
value per pound than cellulostic biomass.
Leaching the solubles from the "raw dung" should remove the chlorides,
and should virtually eliminate the creation of dioxins, while at the
same time, produce an excellent fertilizer solution, containing Ca, P,
K, and organics beneficial to plant growth.... hormones, proteins, and
nitrogen compounds.
I'd be glad to work with you, in developing a "dung washing system.".
I think it could help with both fuel and fertilizer needs
Best wishes,
Kevin Chisholm, aka "Doctor Dung." :-)
----- Original Message -----
*From:* Crispin Pemberton-Pigott <mailto:[email protected]>
*To:* Stoves <mailto:[email protected]>
*Sent:* Monday, December 06, 2010 12:47 PM
*Subject:* [Stoves] Drawing down the dung pile
Dear Burners of Recycled Biomass
We took delivery today of three (barely) steaming bags of goat and
cattle dung with a view to starting to look for ways to burn it
cleanly in space heating stoves.
If there is interest from anyone in cooperating (by making stoves
and trying them) we should start a thread here, preferably.
I have already heard from a couple of people and Prof Lodoysamba
is particularly interested. He says there are large amounts of
goat dung which is normally not burned by nomads, though cattle
dung is. Probably the reason is that no one has made a stove tuned
to consume Capra Crap. Well, let’s put that omission behind us!
We can call it the Crapra Stove Project – an international effort
to turn steaming pellets into steaming pullets.
The focus will be on North Asia because that seems to be where the
current interest is.
Regards
Crispin
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Frank Shields
Soil Control Lab
42 Hangar way
Watsonville, CA 95076
(831) 724-5422 tel
(831) 724-3188 fax
[email protected]
www.compostlab.com
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