How do you recover Silver from spent fixer?

Answer 1

There are two ways. One is ion replacement--you get three pounds of steel wool and put it in a gallon of used fix. Fixer would rather complex to iron than to silver. The steel wool will dissolve, leaving a black sludge of silver at the bottom of the container. The other is electroplating. There is a stainless steel electrode in the machine. You put in the used fix and turn the machine on. Eventually, a layer of silver will coat the stainless steel. You run the machine for about a year, then recover the silver by flexing the electrode.

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Answer 2

There are three main processes to remove silver from film processor chemicals. I could spend the next hour typing a response to this question. The easiest way to learn about this is to go to the Kodak website. You can both learn about the process and find resources to buy what you need.

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The simplest way to do it is to get three pounds of steel wool and put it in a gallon of the used fixer. The fixer will exchange silver atoms for iron atoms, and you'll get a silver-rich sludge at the bottom of the container.

The right way to do it, if you've got the equipment, is to use an electroplating device. It has chromed steel plates in it that the silver will stick to. After the silver has been recovered, you can peel the silver off the plates. These machines are not cheap, but they work.

There's also an ion exchange canister you can buy. You put the fixer in it, wait till they tell you the silver has been recovered, and pour off the used fixer. Then you send the canister back to the company that made it. I don't know if they send you money for it. Don't get one of these.