[Noisebridge-discuss] Re: Chemical safety

Audrey Penven audrey at lostinthenoise.net
Mon Oct 6 15:41:45 UTC 2008


Once the darkroom is functional, we'll have used fixer pretty quickly.
It would be really cool to do this.

- audrey

On Mon, Oct 6, 2008 at 12:10 AM, Meredith L. Patterson
<mlp at thesmartpolitenerd.com> wrote:
> Mark Cohen wrote:
>>
>> Rayko likely,  as most labs will take your fixer, they reclaim the silver.
>
> Someone had asked earlier about whether we could reclaim silver ourselves.
> We can do this pretty easily via electrolysis, which is sort of like a
> wet-cell battery only backward. If I were doing it, I'd build a large bath
> (a tupperware bin would probably work, though I think you'd want to orient
> the electrodes the long way), cut slits to hold two large flat electrodes in
> place, then apply dc current and wait for the dissolved silver to plate onto
> the cathode.
>
> I'll be happy to test this out on a small scale if someone has some used
> fixer they'd like to give me.
>
> --mlp
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