in these days I was doing some electrolysis experiment (no photography related) and then I thought of some use for recovering silver... I'm no chemist, that's why I asked on APUG first: if there was a reliable system - I thought - some other must already be using it.
Running an electrolysis process costs time and money. I don't know if the quantity of silver one can recover from a fixing bath is worth the effort.
If making silver nitrate wouldn't be such a deadly task, I would be tempted to claim the metallic silver and make my own silver nitrate which I use extensively in my photography and printmaking. But that is definitively NOT a thing I will ever attempt to do.
Is there a similar way to restore the fixing bath? Ok, the fixer doesn't cost as much as silver does, but I wouldn't totally disregard the idea of having my fixer life extended a little bit. I'm into wet plate photography now and I'm consuming a lot of hypo. It's not expensive, but you need a lot of it and dies quickly.