Dear Boston
  ----- Original Message ----- 
  From: Boston Nyer 
  To: Discussion of biomass cooking stoves 
  Sent: Friday, February 10, 2012 11:06 AM
  Subject: [Stoves] Cleaning Dung


  Hello,


  I'm looking to clean/rinse cow dung and do not have any experience doing so.  
Does anyone have any experience cleaning dung and would like to share?  

  # I've never done it, but I think it is a good idea, requiring further 
development work. Big thing is to have use for the "wash water". 

  # Simplest thing would be to slurry the Manure/dung to remove solubles. 
Solubles could be simply decanted, or the remaining pulp could be filter 
pressed to get a drier cake.

  # Removal of the soluble protein, salts and micronutrients should allow the 
remaining fibre to be dried easier, to have a higher calorific value, and to 
burn safer, with less risk of dioxin formation. Washed dung could be briquetted 
in a simple press, but the washing process would probably remove the natural 
"binders", and thus a binder of some sort may have to be added. Richard Stanley 
has done a lot of work on manufacturing fuel briquettes from various locally 
available biomass feeds

  # On the one hand, the "dung wash water" could make an excellent "Fertigation 
Feed." On the other hand, depending on dung source, soil type, local rainfall, 
crop being grown, intensity of use, etc, there may be a problem with salt 
buildup in the soil.

  Best wishes, 

  Kevin Chisholm


  Thank you!
  Boston



  -- 
  Boston
  Skype: BostonNyer
  Cell: (585) 503-3459

  www.burndesignlab.org




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