The concentration of Cu (II) is around 400 μg/L and Silver (I) is around 40μg/L. The samples are from cooling tower blow-down waters. There is heavy literature on concentrated solutions but not on this topic. Any suggestions?
Dudley J Benton
This problem is not uncommon in cooling tower blowdown, but it's usually something other than Cu or Ag, like Pb or Hg. The standard way of dealing with this is to introduce an additive that will form a precipitate that can then be separated. Any of the large industrial chemical suppliers would be glad to sell you such an additive. Trying to separate it out electrically would be more expensive and troublesome to maintain.
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