Removal of copper and iron from ethanolic solutions by an anion exchange resin and its implication to rare-earth magnet recycling

Avdibegović, Dženita; Barbier, Elke; Jaklič, Blaž; Škapin, Srečo D.; Spreitzer, Matjaž; Binnemans, Koen

doi:10.1016/j.chemosphere.2023.138603

Cited by 4 publications

(3 citation statements)

References 49 publications

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“…The anion-exchange resin is used when the concentration of Cl − is greater than 1.5 mol/L, and the Cu + ion can form complex anions in the solution. When the concentration of Cl − is lower than 12 mol/L, Ni 2+ cannot form an anionic complex [62].…”

Section: Ion-exchange Methodsmentioning

confidence: 99%

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Exploring Strategies for Copper Removal from Nickel Anolytes: A Review

Tang,

2023

ChemEngineering

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Various methods, such as electrochemical purification, chemical precipitation, solvent extraction, and ion-exchange resins, have been extensively employed for the removal of copper from nickel anolytes. However, these methods exhibit several significant drawbacks when applied in industrial settings. For instance, electrochemical purification fails to efficiently manage nickel anolyte solutions with low copper content. Chemical precipitation presents challenges in residue management and incurs high production costs for precipitants. Solvent extraction raises concerns related to toxicity, while the use of ion-exchange resins demands meticulous selection of suitable materials. In this review, we present a comprehensive review of the nickel removal methods used for nickel anolyte purification, electrochemical purification, chemical precipitation, solvent extraction, and ion-exchange resins. We also examine the suitability and benefits of each technique in industrial settings. The ion-exchange method has drawn significant attention due to its strong selectivity and small adsorption quantity. The ion-exchange separation process does not generate any slag, and the ion-exchange resin can be recycled and reused; this method has great potential in a wide range of applications.

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Section: Ion-exchange Methodsmentioning

confidence: 99%

“…Table 3. Functional groups and adsorption selectivity order of metals comprising chelating resins [60][61][62][63].…”

Section: Ion-exchange Methodsmentioning

confidence: 99%

Exploring Strategies for Copper Removal from Nickel Anolytes: A Review

Tang,

2023

ChemEngineering

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“…After the loading step, the reverse reaction, transferring ions from the resin to the aqueous phase, can also be performed by introducing appropriate reagents to the loaded resins [123]. The IX process has been evaluated for wastewater treatment [121,[124][125][126] and metal extraction/removal from leach solutions, including uranium [127][128][129][130], PGMs [119,[131][132][133], copper [134][135][136][137][138], and chromium [139][140][141][142].…”

Section: Ion Exchangementioning

confidence: 99%

Efficient Metal Extraction from Dilute Solutions: A Review of Novel Selective Separation Methods and Their Applications

Rahmati,

Adavodi,

Hosseini

et al. 2024

Metals

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Notable increases in metal consumption and declining ore grades in recent decades have stressed the significance of dilute solutions as secondary sources of valuable metals. Moreover, environmental considerations and the imperative of sustainable development have further emphasized their treatment. Therefore, finding an efficient solution for separating metals from dilute solutions has attracted the attention of numerous researchers. This paper reviews the purification processes of dilute solutions and highlights key achievements of published research works. Although this study focuses on evaluating the efficiency of recently developed aqueous-phase purification methods, such as immobilized ligands, ionic liquids, and air-assisted solvent extraction, the application of conventional processes to treat these solutions, such as solvent extraction, ion exchange, membranes, chemical precipitation, and adsorption are also briefly outlined. To provide a comprehensive assessment, more than 200 research articles were reviewed, and their key findings are stated in this study. This research contributes to the advancement of knowledge of metal recovery from dilute solutions and sheds light on the dynamic evolution of this field.

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