Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Have acquired a solution containing gold
Would it be at all practical to remove the gold in an electroplating system.
Winfred Morganelectronic repair - Decatur, Texas
2006
First of two simultaneous responses --
If by practical you mean profitable it depends on the gold content. Mines are dug and abandoned according to this variable.
Guillermo MarrufoMonterrey, NL, Mexico
2006
Second of two simultaneous responses --
Hi Winfred,
It would depend on the volume you have and the gold metal concentration in the solution. If you have one or two gallons, it would probably not be practical. There are a few ways to recover the gold, but without hazardous chemical or plating experience I would advise against it. A reputable precious metals refiner may do it for you. If you choose one make sure they are using a licensed and properly permitted hazardous waste hauler (for transport). It also pays to know exactly how much gold you have before sending the solution out. Good Luck!
process engineer - Malone, New York
2006
In the old days, it would be shipped as a haz material, and not a haz waste since it was being "recycled". Makes a difference who can haul it and the cost of hauling.
James Watts- Navarre, Florida
2006
I used the term "hazardous waste hauler" because after the gold is dropped out of solution, the processor is left with a waste solution that must be treated in the proper manner. You don't want some yo-yo recovering the gold and dumping the remainder of the solution into a sewer drain. Cradle to grave is taken very seriously these days.
Mark BakerProcess Engineer - Syracuse, New York
2006
My assumption is that a sane person would use a well known reputable company who's sole business was reclamation of spent plating solutions. shipping it as a haz waste requires that it goes to a certified waste treatment facility, which few if any reclaimers are.
James Watts- Navarre, Florida
2006
I don't want to argue with you Jim. The man that posted the question was in electronic repair and had acquired a gold solution. I was just warning him of things that he could be liable for. I have serviced 80-90 refining accounts in the past and never had a problem with customers using a haz waste trucker shipping to the refiner. The refiners I dealt with had to treat the spent solutions and had certified waste treatment operators on staff. Maybe regulations have changed in the last 7 years, so I could be wrong about present day procedures.
Regards,
Process Engineer - Syracuse, New York
2006
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