Unfortunately I don't live near any active film photo labs (they sell "amateur" film from old stock, but no longer develop - I live on a very small island). So far the recommendations online suggest:
- Mixing your developer and blix between PH 5 - 7 to kill it (sounds suspect)
- Putting steel wool in a plastic paint can, maybe introduce a small electrical charge, and basically perform some electrolysis to remove the silver from the liquid.
Seems very doable but does that sound like good advice (I use my chemicals to the max, and store chemistry in the freezer for months until I am sure I can't get anything more out of it - and it has worked well so far)?