[Terrapreta] Toxicity

[Justin Olsson]

To all,

If anyone knows of any papers on the toxicity of various products of 
pyrolysis (preferably by feedstock), I would greatly appreciate them.  I 
have heard that dioxin may be formed under some circumstances, and that 
bio-oil is very toxic.  I have also heard that bio-oil is almost 
completely benign, but finding scientific articles discussing this is 
proving difficult.

Thanks in advance,

Justin Olsson