is there a way to re-use exhausted rhodium bath water?

Question

i ve heard that there is a way to re-use that in rhodium plating.

Answer 1

Rhodium electroplating is almost always done over a nickel-plated or nickel over copper plated base. The Rhodium bath salts eventually can get contaminated as well as depleted.

Exhausted Rhodium solution can often be concentrated by evaporation, but this resulting solution is not nearly as good as a fresh bath.

It is also possible in some locations to sell the exhausted bath to recyclers who will give a trade-in value for used plating solutions. You might want to check out sites like the one below: