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Metal finishing Q&As since 1989
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Recovery of gold from polypropylene and carbon filter cartridges
Q. We use polypropylene filter cartridges, to filter gold electrolyte, and we carbon pack once / twice in a month. We are unable to use it for third time as it is getting choked up, so we replace with a new cartridge. Now my question is: How to to reclaim entrapped gold from used /carbon packed polypropylene filter cartridges? I normally wash with hot water, and electrolytically extract gold, but still the cartridge contains gold. How to recover entire gold from the used cartridge? Suggestions?
![Panjala Mukesh](../portraits/panjala_mukesh.jpg)
Panjala Mukesh
fashion jewelry mfgr.
Hyderabad, India
2004
This is a simple, routine job for a precious metal refinery, Mukesh. Have you none within reasonable shipping distances? Good luck.
![Ted Mooney, finishing.com](../portraits/ted_mooney_beach.jpg)
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2004
Q. Thanks for replying sir, we do recovery & refine gold from dragouts, and making our own GPC Salt, so kindly give me the process details so that, I can recover to the maximum extent.
![Panjala Mukesh](../portraits/panjala_mukesh.jpg)
Panjala Mukesh
fashion jewelry mfgr.
Hyderabad, India
2004
My expertise is metal finishing, including plating, not refining, Mukesh. I suggested that you send the cartridges to a refinery because that is what all the shops that I am familiar with do. If you already run a refinery yourself, I doubt that I or other metal finishers can contribute much to your knowledge of this subject.
All I can say is that my understanding is that a refinery normally starts by burning the ion exchange resins, not by trying to recover the gold by rinsing. Good luck.
![Ted Mooney, finishing.com](../portraits/ted_mooney_beach.jpg)
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Q. Can I burn the polypropylene cartridges, to extract gold; will it cause any dangerous fumes emission like thyoxin etc, kindly suggest.
![Panjala Mukesh](../portraits/panjala_mukesh.jpg)
Panjala Mukesh
fashion jewelry mfgr.
Hyderabad, India
2005
Sorry, Mukesh, I am not qualified to advise on the dangers, if any, that are associated with the refining of gold and the burning of plastics. But I have never heard of thyoxin, and an internet search of that word is not producing anything relevant. Sorry.
![Ted Mooney, finishing.com](../portraits/ted_mooney_beach.jpg)
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Q. Hi, I have 0.020% of gold in 15% copper sulphate [on eBay or Amazon (adv.)]solution, so I want to recover the gold. Please help me out.
My question is based on some project that I have 900 liters of copper sulphate solution, and in that we have 0.020% of gold. We have generated that gold totally by electroplating method.
Manthan soni- India, ahmedabad
August 17, 2012
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