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Burning Treated Wood

 
                          
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I just burned pressure treated wood, and then discovered I was not supposed to do that.  Great!  Now what do i do with the ashes?  They say it contains arsenic.
 
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Location: Adelaide, South Australia (Mediterranean climate)
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It might contain arsenic, it depends on the type of treatment (copper chrome arsenate or CCA is the older style, now there are others like ACQ which don't contain arsenic.)

Since the treated wood is sent to landfill I assume that's where the ashes need to go too.  I don't think it requires any special kind of waste management (despite what we know about dumps leaching nasty stuff out years after they are filled and abandoned.)
 
                                                                    
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Location: Nashville, Tennessee, USA
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Take the ashes to a Home Depot manager.
He should know what to do with them.

 
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Here is a bit of interesting info:

"CCA treatment leaves about one ounce of inorganic arsenic in each 12 foot 2 x 6. This is enough arsenic, if released, to kill about 250 adults."  from:  http://www.origen.net/ccawood.html

also from same source:

Burning CCA wood releases the chemical bond holding Arsenic in the wood, and just one Tablespoon of ash from a CCA wood fire contains a lethal dose of Arsenic.

and

Even more astonishing, minute amounts of 'fly ash' from burning CCA pressure treated wood, can have serious health consequences. The Journal of the American Medical Association reported on a family that burned CCA in a wood stove for winter heating. Their hair fell out, all family members suffered severe, recurring nosebleeds, extreme fatigue and debilitating headaches. The parents complained about 'blacking out' for periods of several hours, followed by long periods of extreme disorientation. Both children suffered frequent seizures described as 'grand mal'. The symptoms were finally traced to breathing minute amounts of arsenic laden dust leaking from the furnace as fly ash. The family's houseplants and fish died, too, victims of copper poisoning from the same dust. Peters HA, et al: Seasonal exposure to arsenic from burning CCA wood. JAMA 251:(18)2393-96, 1984)

So, please be careful handling that dust!

 
Hugh Hawk
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Wow.  I wouldn't have burnt it anyway, but I had no idea that the consequences could be that dramatic.

Treated pine is a very popular material.  I wonder how the new treatments fare in terms of toxicity.  I don't think they are supposed to be burned still.
 
                          
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Thanks for the responses.
 
There should be more information available to the customer when making the purchase  --something like "hey dummy, don't burn, eat or smoke this"
For cleanup: I wet the ashes down so they would not be flying about, then once the water was drained off, put the remains in a thrash bag and sent it to the dump. 
But, it makes we wonder how many Americans have this stuff sitting in their yards having no idea of its toxicity.





 
 
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