Since the useful life of a coffee tree is around seven years, the practice was just to move on to another portion of the forest and plant anew. Thankfully, the growers have become a bit more responsible.
Have you ever considered the Beutler developer. The working developer is highly dilute so that it has little effect on the environment. It uses just three ingredients; metol, sodium sulfite, and sodium carbonate. I used it for years as my general purpose film developer when I was a struggling student with little money.
When used for prints does a coffee developer cause any staining with FB papers? This is something I've wondered about.