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Re: Copper Chloride solution

What you write is all true, however, there could be some difficulty in managing
the wastewater remaining after copper recovery. That wastewater would likely be
a low-pH solution that contains copper at levels higher than typical local sewer
discharge limits.  The cost of disposing of it as hazardous waste might exceed
the revenue generated from the copper recovery process.  In some states (e.g,
California), treating the wastewater prior to disposal could require at least a
limited hazardous waste treatment facility permit.  These problems make off-site
recovery pretty attractive.
Kelly Moran
TDC Environmental

"Callahan, Mike" wrote:

> Lin,
> I'm guessing this is a ferric chloride solution that has been used to etch
> copper. Here in southern California, a few companies were offering a
> recycling service. They would charge a small fee to take the waste and
> regenerate it. Their big profit was in copper recovery.
> Since you've stated that each drum contains 100 pounds of copper, there is a
> big incentive to recover the metal. At $1 per pound, there's $3,000 sitting
> in those drums. You could probably get it out with a simple power supply and
> some carbon steel electrodes.  The copper will plate out and the iron will
> dissolve, yielding a ferric chloride solution.  Ferric chloride solution is
> used in waste water treatment and circuit board etching.
> Talk to a few electroplaters in your area and they should have lots of info
> on how to recover any metal of value. Hope this helps.
> Mike.callahan@jacobs.com