Re: MAPS: Re: Water Pipe/Vaporizer Study Revisited

[Gavin Macfie <mcfie@xxxxxxxxxxxxxxxxx>]

Hi All

The comments on optimal bong design reminded me of the thoughts I have had
on the subject in my more 'meditative' moments. Someone commented that
some sort of screen would be useful, in order to minimise the size of the
bubbles as they pass through the water. A concept from applied chemistry
which is pertinent to bong design is that of 'theoretical stages', the
number of times a system must be brought to equilibrium in order to
achieve the desired transfer of component A from phase 1 to phase 2.  This
is used in the design of industrial distilation columns and gas scrubbing
units. The most common design is to have numerous plates with fine holes,
so the gas has to come to equilibrium with the liquid each time it passes
through. The use of baffles to divert the gas through a zig zag path can
minimise the height of the column, or bong. It is thus possible to achieve
the same degree of smoke cleansing in a single, small bong as in a more
elaborate multichambered version. 

The original post, which envisaged tampering with the solvent properties
of the liquid appealed to me greatly, as I too have been through the same
thoughts, though sadly have not yet embarked on any experiments! The
temperature is key however - gas solubility in a liquid increases with
decreasing temperature, so iced water is a simple but effective measure.

While on the solvent properties tip, why not go one stage further and pass
the smoke through a slurry of activated particles? If the harmful and
desirable components of the smoke were well established, could the surface
of clay, charcoal, or something similar be modified, eg by addition of
polymer, to selectively bind the harmful components?

Just a thought.

Gavin.





On Sat, 5 Jun 1999, Peter Webster wrote:

> At 18:47 03/06/99 -0400, Jon Frederick wrote:
> >...wouldn't cannabinoids show a nonlinear absorption
> >curve, reaching saturation rather quickly...?
> 
> Cannabinoids are not soluble in water at all, but what happens is that the
> water cools them in their vapour phase and then they CONDENSE out as oily
> droplets, immiscible but nonetheless trapped. As such, there would be no
> "saturation" and they would continue to condense out all through the
> ceremony. Or medicinal session. Or whatever...
> 
> ___________________________________________________________
>   Peter Webster				vignes@xxxxxxxxx
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