[Terrapreta] Charcoal Supply

[rukurt at westnet.com.au]

Stephen Hayden wrote:
> Certain clays, such as magnesium silicates, can be carbonized through 
> a controlled process.  There's much info on the web - 
> http://www.netl.doe.gov/publications/proceedings/01/carbon_seq/6c2.pdf for 
> example.
Looking through the pdf mentioned above, I see pressures of 185 
atmospheres, also heat treatment, magnetic separation etc. This sounds 
like an industrial process that might be applied to coal fired power 
house stack gas treatment. Then there's the magnesium carbonate to get 
rid of. Hardly an agricultural method of CO2 sequestration. Possibly 
useful for "CleanCoal" though.

Thanks for the info,

Kurt