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topic 2141

How to Dispose of Gold Stripper



(1998)

Dear Sir,

Can anyone suggest an effective method to treat cyanide gold stripper? We remove the gold by electrolytic machine and destroy the cyanide using sodium hypochlorite. We found that the COD content in the stripper solution is 20,000 ppm.

Our local regulation parameter limits for COD is 100 ppm before discharging.

Looking forward to a favorable comment.Thank You

TEOH MENG SOON
Malaysia


24 september 98

We are having some problem on discharging the gold stripper after reclaimed the gold. It contains a lot of cyanide and complexing agent. The concentration of COD in the solution is more than 20,000 ppm. Therefore,we couldn't dump the solution after the cyanide destruction.

Any further help or experience would be appreciated.

Teoh Meng Soon
Malaysia


(2004)

A good amount of organics in the gold stripper can be easily adsorbed onto

1) Activated carbon and then dispose off in a well equipped incinerator.

2) Certain ion exchange resins can also remove these organics

But the first is simpler.

There are CN destruction techniques in which organics are also destroyed significantly.

PEETHAMBARAM PARTHASARATHY
- Bangalore, INDIA


(2004)

In Gold stripping solution, there are 3 substances as following:

1. cyanide

2. organic(nitrobenzene sulfonate)

3. metallic ion ( Pb ,Zn).

If you removed gold by electrowinning, metallic ion and some part of cyanide would deposited on cathode and being oxidized respectively. The remained cyanide can be get rid off by oxidizing agent for instance 35% Hydrogen Peroxide [linked by editor to product info at Amazon] or hypochlorite. The last substance is organic part that is difficult to remove even using activated carbon.

Pramot Pupanthong
- Bangkok, Thailand


(2006)

Hi Everyone
I am working in E-waste Recycling company. We are recovering metals from E-waste.
In one of our process we use cyanide solution to strip off the gold from waste materials, for this I need to use a Gold stripper to remove gold alone leaving other metals like copper, nickel etc in the material itself.
Can anyone guide me on the composition of a gold stripper.

Dinesh Rajamanickam
- Penang, Malaysia


February 28, 2011

Hello,

I am really interested about the content of gold stripper. It is same for all gold stripper or it is depends on the chemicals we used in the extracting gold from e-waste?

Fida Yahaya
university - Malaysia



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