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

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.

Modelling and Calculation of Raw Material Industry

“…The analysis of the test results was confirmed using already-known theoretical equations [1,3,4], experimentally identified dependencies (linear and non-linear regression) [1,3], advanced methods of picture analysis [2] and spectral analyses [6,8]. The comparison of developed models of investigated processes was supported with statistical analyses [3,7]. The spatial distribution of measured parameters in situ was modeled with the use of the Arc-GIS Pro tools [5,6].…”

“…In environmental areas, it is important to use new methods in the monitoring of pollutants, which could be a complement to the traditional techniques used to measure and model air pollution [5,6] or methods that are developments or new solutions in the field of purification and removal techniques, including organic compounds and selected metals (Zn (II) and Mn (II) from solutions [7,8] and studies regarding the physicochemical properties of products obtained from used goods/products [9].…”

“…(2) Studies on environmental aspects of activities in key sectors of the modern economy [5][6][7][8][9];…”

“…The research methods applied to solve the investigated issues reflect the nature of these main topics. In the papers that deal with fuels or wastes, laboratory tests were most commonly used-either with the use of standard procedures [4], with the application of typical equipment innovatively used for specific tests [1,2,7] or with the use of dedicated testing facilities, developed or tuned for the investigations that were performed [3,5,6,8]. The analysis of the test results was confirmed using already-known theoretical equations [1,3,4], experimentally identified dependencies (linear and non-linear regression) [1,3], advanced methods of picture analysis [2] and spectral analyses [6,8].…”

Enhanced removal of scaling cations from oilfield produced water by carrier mineral floatation

“…Based on previous research, ion flotation has also proved effective for divalent cations removal and can be selective using specific anionic collectors. Generally, heavy metal ions have a better affinity for the anionic collector since they have smaller hydrated radius (Agnieszka et al 2021;Luong & Liu 2021). Flotation possesses several advantages over other conventional methods in terms of larger treatment capacity, low energy consumption and better space utilization ratio.…”