Removal of Zn(II) and Mn(II) by Ion Flotation from Aqueous Solutions Derived from Zn-C and Zn-Mn(II) Batteries Leaching

Agnieszka Sobianowska-Turek, Katarzyna Grudniewska, Paweł Maciejewski and Małgorzata Gawlik-Kobylińska
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Agnieszka Sobianowska-Turek: Faculty of Environmental Engineering, Wrocław University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
Katarzyna Grudniewska: Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskigo 27, 50-370 Wroclaw, Poland
Paweł Maciejewski: Faculty of Civil Engineering, Czech Technical University in Prague, Jugoslavskych partyzanu 1580/3, 160 00 Prague 6-Dejvice, Czech Republic
Małgorzata Gawlik-Kobylińska: Command and Management Faculty, War Studies University, gen. Chrusciela 103 Avenue, 00-910 Warszawa, Poland

Energies, 2021, vol. 14, issue 5, 1-12

Abstract: The Zn(II) and Mn(II) removal by an ion flotation process from model and real dilute aqueous solutions derived from waste batteries was studied in this work. The research aimed to determine optimal conditions for the removal of Zn(II) and Mn(II) from aqueous solutions after acidic leaching of Zn-C and Zn-Mn waste batteries. The ion flotation process was carried out at ambient temperature and atmospheric pressure. Two organic compounds used as collectors were applied, i.e., m-dodecylphosphoric acid 32 and m-tetradecylphosphoric 33 acid in the presence of a non-ionic foaming agent (Triton X-100, 29). It was found that both compounds can be used as collectors in the ion flotation for Zn(II) and Mn(II) removal process. Process parameters for Zn(II) and Mn(II) flotation have been established for collective or selective removal metals, e.g., good selectivity coefficients equal to 29.2 for Zn(II) over Mn(II) was achieved for a 10 min process using collector 32 in the presence of foaming agent 29 at pH = 9.0.

Keywords: ion flotation; used batteries; ecological safety; recovery; Zn(II); Mn(II) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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