The BRISA process as a path for efficient copper recovery from waste PCBs

In the present work, a two-stage biohydrometallurgical process for copper extraction from waste PCBs is developed. The main goal of this study to check whether separate chemical leaching with ferric iron regeneration agent by bacterial oxidation ferrous an efficient route recovery PCBs. To test proposal, large pieces were retained in stirred tank reactor (STR) contact liquor circulating at high flow rate between STR and bioreactor. kinetics PCB pieces, when added excess over stoichiometric requirements, limited mass transfer agent. A heterogeneous kinetic model was proposed fit experimental data. It also found that increasing concentration increased. Process separation has proven be promising configuration which productivity bioreactor fulfilled demand 90% achieved 48 h