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How to Recover Silver and cadmium from used HNO3

March 21, 2010

Dear All,

I want to segregate the gold,silver, cadmium and copper metals from used nitric acid in traditional jewelry work shops.

Thanks & Regards

Siva Krishna
hobbyist - Vijayawada, Andra Pradesh, India

Try an internet search for "electrowinning".

Jon Barrows, MSF, EHSSC
Kansas City
March 22, 2010

I have simple process for ag recovery.u add NaCl or HCl to precipitate AgCl. filter it ,wash it very well to remove acid contents (wash with hot water). take it in bucket and add NaOH and then glucose powder. you will get cement silver. wash well to remove NaOH and carbon components. then dry it and melt it for 965 °C.

Bhupesh Mulik
jewellery - Mumbai, India
April 22, 2010

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