Bad Saw Dust In the Pile

Discussion in 'Organic Lawn Care' started by Daner, Apr 5, 2009.

  1. Daner

    Daner LawnSite Bronze Member
    Posts: 1,308

    Hey all...Happy Spring to ya all:waving:

    What do you think about the different Saw Dusts that go Into a Compost pile?

    MDF and Plywood have Glues mixed with them...Do they harm Our piles?

    How about Walnut? Or other woods

    Thanks for your Input

    Daner
     
  2. Daner

    Daner LawnSite Bronze Member
    Posts: 1,308

    I'm wondering If the glue will still be In the compost after the heating stage Is done

    anyone??
     
  3. Duffster

    Duffster LawnSite Bronze Member
    from Midwest
    Posts: 1,193

    The glue is still there

    Where else can it go

    IDK but I doubt it can hurt anything
     
  4. Daner

    Daner LawnSite Bronze Member
    Posts: 1,308

    It may get burnt away with the heating process

    Plywood, osb and MDF carry Ureaformaldahyde
     
  5. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,308

    I wouldn't worry all that much about the glue, it is a food source.
     
  6. dishboy

    dishboy LawnSite Platinum Member
    from zone 6
    Posts: 4,164

  7. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,308

  8. dishboy

    dishboy LawnSite Platinum Member
    from zone 6
    Posts: 4,164

    Just was not sure if the formaldehyde would be a issue or not composted?
     
  9. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,308

    formaldehyde = H2CO

    It is worth noting that a formaldehyde + water solution can be used as a sterilizer. The question is if the concentration in a compost pile would be high enough to cause concern. Given mold can utilize some formaldehyde based glues used in building materials as a substrate, I suspect it probably is not much of a concern in a compost pile.
     
    Last edited: Apr 7, 2009
  10. 44DCNF

    44DCNF LawnSite Bronze Member
    Posts: 1,460

    From wikipedia on urea formaldehyde...
    Urea formaldehyde is also used in agriculture as a controlled release source of nitrogen fertilizer. Urea formaldehyde’s rate of decomposition into CO2 and NH3 is determined by the action of microbes found naturally in most soils. The activity of these microbes, and therefore the rate of nitrogen release, is temperature dependent. The optimum temperature for microbe activity is approximately 70°-90°F.

    On another note, I think staying away from lumbers pressure treated with arsenic would be the bigger concern. 5 T. of wood ash from CCA wood is enough to kill a half ton cow, 1 T. a human. Is there 'Scopulariopsis breviculis' fungus in the pile? That fungus was known to release arsine gas in it's breaking down of arsenic treated wallpaper and glue, which poisoned people in Europe in the 19th century.
     

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