Kinetic Study of Manganese Precipitation of Nickel Laterite Leach Based-solution by Ozone Oxidation

Oruê, Beatriz Peralta; Botelho, Amilton Barbosa; Tenório, Jorge Alberto Soares; Espinosa, Denise Crocce Romano; Baltazar, Marcela dos Passos Galluzzi

doi:10.1080/01919512.2020.1796580

Cited by 13 publications

(4 citation statements)

References 28 publications

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“…Many oxidizing agents for the oxidative precipitation process have been proposed including ozone [19], SO 2 /O 2 or SO 2 /air gas mixtures [10,20,21], Caro's acid (H 2 SO 5 ) [22], and potassium permanganate (KMnO 4 ) [23]. The SO 2 /air gas mixture, in comparison with the other oxidants, is relatively cheaper [10,20].…”

Section: Introductionmentioning

confidence: 99%

Towards Using MMO Anodes in Zinc Electrorefining: Mn Removal by Simulated Plant Off-Gas

Askarian,

Mousavi,

Mollaabbasi

et al. 2023

Metals

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Implementing mixed metal oxide (MMO) anodes in zinc electrowinning is highly desired due to the considerable reduction in electrical energy consumption. However, the presence of manganese in the electrolyte is a major obstacle for implementing MMO anodes in the zinc cell houses. In this work, we explore the possibility of using plant off-gas, containing SO2, to remove manganese. A SO2/air gas mixture with different SO2 and O2 concentrations was therefore used for the oxidative precipitation of manganese. It was shown that the manganese oxidation reaction is highly pH-dependent. Calcium hydroxide was used to control the pH during the process. Different operating parameters, i.e., pH, SO2/air ratio, reaction time, and effect of cobalt as a reaction catalyst, were investigated. Optimal conditions for manganese removal were reported. Under the optimal conditions, the manganese concentration decreased from 1 g L−1 to less than 1 mg L−1 within 30 min. Precipitates were characterized using EDS, XRF, and XPS techniques and showed coprecipitation of manganese, zinc, gypsum, and cobalt.

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Section: Introductionmentioning

confidence: 99%

Towards Using MMO Anodes in Zinc Electrorefining: Mn Removal by Simulated Plant Off-Gas

Askarian,

Mousavi,

Mollaabbasi

et al. 2023

Metals

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“…Then, CoCO 3 was obtained using NH 4 HCO 3 , with losses of Co ions in the aqueous phase further recovered as CoS using (NH 4 ) 2 S [104]. The separation of Mn can be carried out also using advanced oxidation processes, such as ozone [105].…”

Section: Precipitationmentioning

confidence: 99%

Cobalt Recovery from Li-Ion Battery Recycling: A Critical Review

Botelho

Stopić

Friedrich

et al. 2021

Metals

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The increasing demand for Li-ion batteries for electric vehicles sheds light upon the Co supply chain. The metal is crucial to the cathode of these batteries, and the leading global producer is the D.R. Congo (70%). For this reason, it is considered critical/strategic due to the risk of interruption of supply in the short and medium term. Due to the increasing consumption for the transportation market, the batteries might be considered a secondary source of Co. The outstanding amount of spent batteries makes them to a core of urban mining warranting special attention. Greener technologies for Co recovery are necessary to achieve sustainable development. As a result of these sourcing challenges, this study is devoted to reviewing the techniques for Co recovery, such as acid leaching (inorganic and organic), separation (solvent extraction, ion exchange resins, and precipitation), and emerging technologies—ionic liquids, deep eutectic solvent, supercritical fluids, nanotechnology, and biohydrometallurgy. A dearth of research in emerging technologies for Co recovery from Li-ion batteries is discussed throughout the manuscript within a broader overview. The study is strictly connected to the Sustainability Development Goals (SDG) number 7, 8, 9, and 12.

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“…The advantages of chemical precipitation are process economics due to use of cheap reagent, extensive application range and the possibility of easy scale-up, while its drawbacks are the presence of a limit in the precipitation degree and in the selectivity. Some studies reported the possibility of separating Mn(II) and Co(II) from acidic solutions containing Ni(II) by oxidative precipitation (Nguyen and Lee, 2023;Joulié et al, 2014;Orue et al, 2021;Zhang et al, 2002). Among them, several kinds of oxidizing agents such as O3, NaClO, and gas mixture of SO2 and O2 were employed to separate Mn(II) and Co(II) in the form of MnO2 and Co2O3 by controlling the molar ratio of oxidizing agent to Mn(II).…”

Section: Introductionmentioning

confidence: 99%

Comparison of separation of Mn(II), Co(II), and Ni(II) by oxidative precipitation between chloride and sulfate solutions

Wen,

Tran,

Lee

2024

Physicochem. Probl. Miner. Process.

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In hydrometallurgy, precipitation would be easier and simpler than solvent extraction as a separation operation. In this work, the separation performance of Co(II), Mn(II) and Ni(II) by oxidative precipitation was investigated. For this purpose, NaClO was employed as an oxidizing agent and the separation behavior of the three ions was compared between chloride and sulfate solutions by varying some factors such as the dosage of NaClO, solution pH and reaction temperature. By controlling the molar ratio of NaClO to Mn(II), manganese ions(II) were easily separated as MnO2 by oxidative precipitation from both chloride and sulfate solutions. At the same experimental conditions, precipitation percentage of Co(II) from chloride solution was higher than that from sulfate solution, which can be ascribed to the stronger tendency of Co(II) to form complexes with chloride ion than with sulfate ions. Addition of NaCl to sulfate solution and oxidative precipitation at high temperature enhanced the precipitation percentage of Co2O3 and thus separation degree between Co(II) and Ni(II) was improved. Under the optimum conditions, MnO2 and Co2O3 powders with 99.9% purity were completely recovered by oxidative precipitation from chloride solution. By contrast, the purities of the MnO2 and Co2O3 thus recovered from sulfate solution were only 76 and 91%, respectively. Our results indicated that chloride solution would be more effective than sulfate solution in separating Mn(II) and Co(II) by oxidative precipitation with NaClO. Therefore, the use of chloride-based leaching solutions such as HCl and FeCl3 might be better for the leaching medium of spent lithium-ion batteries.

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Kinetic Study of Manganese Precipitation of Nickel Laterite Leach Based-solution by Ozone Oxidation

Cited by 13 publications

References 28 publications

Towards Using MMO Anodes in Zinc Electrorefining: Mn Removal by Simulated Plant Off-Gas

Towards Using MMO Anodes in Zinc Electrorefining: Mn Removal by Simulated Plant Off-Gas

Cobalt Recovery from Li-Ion Battery Recycling: A Critical Review

Comparison of separation of Mn(II), Co(II), and Ni(II) by oxidative precipitation between chloride and sulfate solutions

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