[Terrapreta] Puzzle

[Greg and April]

Not necessarily.

A part of it may be that it's not so much hydrophobic, as the pores may be sealed, preventing water entry.

In the paperwork sent to me by Dr. Michael Antal, he and several others has studied how temperature affects the pore size, ( and if I understand it correctly, many pores may even be sealed, by the effects of high temperature 'glazing' ).


If this is true, then char may not be truly hydrophobic.


Greg H.

  ----- Original Message ----- 
  From: folke Günther 
  To: Greg and April 
  Sent: Monday, June 16, 2008 11:05
  Subject: Re: [Terrapreta] Puzzle


  Since char is a hydrophobic substance (at least, it is not hydrophilic), you can not expect water to get into the fine pores. If you wait for some time (years), the lump may have broken up and taken up water, but to my experience, it is not necessary to wait. 
  FG


  2008/6/16 Greg and April <gregandapril at earthlink.net>:

    If density is a measure of volume vs. mass, but all the pores are open to water infill, would not the true density be closer to that of water, if they were indeed filled with water?

    Greg H.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /attachments/20080616/c4c44ac9/attachment.html