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Oxyhumolite as a Sorbent of CuII from Phosphate-Containing Solutions

Authors

  • Hana Kohutová,

    Corresponding author
    1. Department of Chemistry, FMMI, VŠB-Technical University of Ostrava, 17. Listopadu 15, 708 33 Ostrava-Poruba (Czech Republic)
    • Department of Chemistry, FMMI, VŠB-Technical University of Ostrava, 17. Listopadu 15, 708 33 Ostrava-Poruba (Czech Republic)
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  • Dr. Bruno Kostura,

    Corresponding author
    1. Department of Chemistry, FMMI, VŠB-Technical University of Ostrava, 17. Listopadu 15, 708 33 Ostrava-Poruba (Czech Republic)
    • Department of Chemistry, FMMI, VŠB-Technical University of Ostrava, 17. Listopadu 15, 708 33 Ostrava-Poruba (Czech Republic)
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  • Dr. Jana Kukutschová

    1. Nanotechnology Centre, VŠB-Technical University of Ostrava, 17. Listopadu 15, 708 33 Ostrava-Poruba (Czech Republic)
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Abstract

This study explores the use of oxyhumolite (OX) for sorption removal of CuII from sewage containing phosphates. It was discovered that the adsorption of CuII markedly depends on pH and linearly increases with increasing pH values. Adsorption efficiency of OX for phosphates is approximately constant (E≈13%) and does not depend on the pH value. The optimum pH range for the selective sorption was determined to be between 3.3–3.7 (ECu≈90%). The good sorption efficiency for CuII results from the high content of humic acids and the presence of inorganic components.

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