Does an RO/DI unit remove aluminum and flouride?

[Anonymous]

Also, if anyone has links to a site that explains just how the RO/DI process works, along with maybe a list of everything it removes, I'd certainly appreciate it. Thanks.

Peace,

Chip

 

[Anonymous]

hi.
Right. The RO membrane will practically reject anything larger than 100 dalton, and the DI will absorb any charged ions.

 

[randy holmes-farley]

seven:

For normal ions, the hydrated size and molecular weight are not especially well correlated. It is the hydrated size that is important for reverse osmosis. Lead (mw = 207) is much more poorly rejected than magnesium (mw = 24).

 

[randy holmes-farley]

Yes.

A properly functioning RO/DI removes almost everything. The few exceptions are very small, neutral molecules, like CO2, CO, H2, N2, O2, He, Ar, Kr, Xe.

[ March 15, 2002: Message edited by: Randy Holmes-Farley ]</p>

 

[Anonymous]

Randy:
Thanx for the info. It does make sense since the hydrate will make the Mg much larger than the Pb.

 

[fsa]

I notice that there are a couple of sponsors here that make r/o units. You might look at their sites and see if you can find the answers. I do know that www.aquaticreefsystems.com does have a list of stuff that is removed by r/o.

 

[The Brain]

Here you go I hope this helps.

Bryan Crenshaw

http://communities.msn.com/_Secure/0QwCoDzQY*S8!*fwEkKV2zsinrK5v87Hm!dFO1ZpMx8cGCPxw1yd5lTnnGU!0pkQ7LlAFJMx!!eWQMdqCMfWNjqTXokWwe6tYTk!lj*BgI7M/rejection-rates-instruct.png

[ March 22, 2002: Message edited by: The Brain ]</p>