Removal of Cr(VI), Zn(II) and Cd(II) ions by transport across polymer inclusion membranes with basic ion carriers
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Pedagogical University of Częstochowa
Wrocław University of Technology
Silesian University
Publication date: 2002-01-01
Corresponding author
Wiesław Walkowiak   

Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Wrocław University of Technology, 50-370 Wrocław, Wybrzeże Wyspiańskiego 27 Street, Poland
Physicochem. Probl. Miner. Process. 2002;36(1):115–122
An experimental investigation of chromium(VI), zinc(II), and cadmium(II) ions removal from acidic chloride aqueous solutions by polymer inclusion membrane (PIM) transport with basic ion carriers, i.e. 4-(1'-n-tridecyl)pyridine N-oxide (TDPNO) and tri-n-octylamine (TOA) is presented. The initial fluxes of all metal ions are higher for the less basic carrier, i.e. TDPNO. On the other hand, the more basic carrier, i.e. TOA gives higher Cr(VI)/Cd(II) and Cr(VI)/Zn(II) selectivity coefficients. Also the application of PIM transport process for removal of 99% chromium(VI) from galvanic waste waters is shown.