[Terrapreta] torrefaction vs. Carbonization ---------Char Hydrophobic / Hydrophilic characters

[Greg and April]

Someone please answer me this if you can:

Which has a bigger effect of the % and types of VM, temperature or time?

Say for example getting the core temperature up to 600* or holding it at 450* for 6 hours.

Greg H.
  ----- Original Message ----- 
  From: Tom Miles 
  To: 'Edward Someus' ; 'Nikolaus Foidl' ; 'Gerald Van Koeverden' ; 'Sean K. Barry' 
  Cc: terrapreta at bioenergylists.org 
  Sent: Sunday, December 09, 2007 12:09
  Subject: Re: [Terrapreta] torrefaction vs. Carbonization ---------Char Hydrophobic / Hydrophilic characters


   
  < SNIP >

   

  Instead of carbonization temperature is volatile matter (%VM) a better measure of the degree of carbonization and hence the level of toxic compounds? 

  Tom

   
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