[Stoves] Drawing down the dung pile

[Kevin]

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 
  To: Stoves 
  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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