From:  [log in to unmask][SMTP:[log in to unmask]]
Reply To:  TechNet E-Mail Forum.;[log in to unmask]
Sent:  Friday, May 22, 1998 11:05 AM
To:  [log in to unmask]
Subject:  [TN] Crashing iron from solution

I asked about lead, but I also wanted to know how to get iron out of
solution.  Is it possible to selectively remove iron from a solution?

Chris Coon
Borden Chemical
Kent, WA




Chris,

You can remove lead by precipitation at a pH of above 8.5.  A little Sodium
Sulfide will remove any remaining lead to meet limits.

Iron can be remove selectively from some solutions, for example, chrome
plating solutions are purified using a cation resin.  A lot depends on the
valence of the iron and the other ions in solution.

Best Regards,

Bob Mesick

Remco Engineering
Water and Wastewater Treatment Systems
www.remco.com

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