Re: [Killietalk] RO

[LeeH920226 at aol_com]

In a message dated 10/9/06 7:31:29 PM, killies at fishroom_net writes:

<< I've heard many times about how temp affects the RO production, but I 
don't understand why. Do the cold water molecules remove their little 
jackets at room temperature and so slip through the holes easier ?
 >>

I think that the usual bimolecular rate kinetics which predict a doubling of 
chemical reaction rates for each 10 degree Celsius rise in temperature is 
generally applicable here. It certainly is experimentally observable. In my setup 
which uses the "waste" water for my water changing process and follows the RO 
unit with a heating process, I could, if I needed more RO water, reverse the 
sequence. However, I only use a small amount of low TDS water for a few species 
and don't really need more than I produce in the winter and in the summer I 
have more than I need. The flow through the system is not slowed by lower 
temperatures, just the flow through the semipermeable membrane.

Lee Harper
Media PA
Join the AKA at http://www.aka.org/aka/modules/content/index.php?id=9.
Archives are at http://fins.actwin.com/killietalk/
Modify your subscription at http://www.actwin.com/mailman/listinfo.cgi/killietalk