Membrane contactors for the recovery of metallic compounds

Finally, the results of copper separation and concentration have been compared to previous results obtained working with two hollow fiber modules, one for the extraction and the second for the back-extraction process and, as expected, a good agreement was observed. Two main advantages of the EPP could be underlined: (i) reduction of the needed membrane area of the contactor and (ii) higher concentrations in the stripping phase can be obtained with the operation conditions used (at laboratory scale).