Bacteria breaks the copper-sulfur bonds to convert the copper compounds into soluble copper ions
The leachate contains the copper ions formed
The copper ions can then be extracted by electrolysis or displacement with a more reactive metal
Phytoextraction:
It involves growing plants in the soil that contains the metal ions. The plants take up the metal ions from the soil, but the plants can't get rid of the metal so the metal builds up. The plants are then harvested and burned up. The ash formed contains the metal compounds.
The metal from the ash can be extracted using electrolysis or displacement
