Extraction of dysprosium from waste neodymium magnet solution with ionic liquids and ultrasound irradiation procedure

Asadollahzadeh, Mehdi; Torkaman, Rezvan

doi:10.1007/s11814-021-0970-6

Cited by 11 publications

(1 citation statement)

References 46 publications

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“…The extraction procedure using these solvents has the drawback of low separation factors. Various methods have been suggested to achieve a more effective extraction process 24 . For instance, one approach is to study the combination of different extractants and their synergistic effects to achieve a higher separation factor.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic features of pulsed solvent extractor for separation of two metals by using the antagonistic effect of solvents

Asadollahzadeh,

Torkaman

2024

Sci Rep

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Separating copper and cobalt ions is crucial due to the industry’s strategic reliance on both these elements. When the extraction process is able to significantly increase the separation factor, it becomes favorable to separate two ions. However, the presence of Cu(II) ions together with Co(II) hinders the achievement of optimum efficiency when using commonly available extractants. This study conducted the separation of the two elements using both batch and continuous methods in a pilot plant pulsed column equipped with a disc and doughnut structure. The initial step involved optimizing the key variables to maximize the separation factor using the central composite design procedure. The optimization of Cyanex272, Cyphos IL 101 concentrations, and the pH value of the aqueous phase were all adjusted to 0.024 M, 0.046 M, and 7.3, correspondingly. In the following step, the hydrodynamic characteristics and extraction performance were examined in the pulsed column of the pilot plant. The findings indicated that the presence of Cyphos IL 101 resulted in an increased separation factor and efficiency within the column. As a result, the ionic liquid enhances performance without encountering any operational issues. This additive is considered an environmentally friendly solvent and does not cause any negative impacts. Consequently, it is suggested for utilization in continuous industrial processes.

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Section: Introductionmentioning

confidence: 99%

Hydrodynamic features of pulsed solvent extractor for separation of two metals by using the antagonistic effect of solvents

Asadollahzadeh,

Torkaman

2024

Sci Rep

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Removal of Co(II) and various metal ions from the residue of the zinc plant through solvent extraction using both acid and neutral extractants

Maleki,

Torkaman,

Asadollahzadeh

2024

Can J Chem Eng

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The recovery of cobalt from secondary sources is a crucial issue in technology development, particularly for its numerous applications in various industries. Solvent extraction has proven an effective method for metallic ions separation from secondary sources. The main goal of this work was to study the separation of metals by solvent extraction technique from zinc plant leach waste. Initially, several extractants, including Cyanex 272, Cyanex 301, LIX 5640 H, Alamine 336, and tri‐n‐octylamine (TOA), were tested to treat the leach solution. It was discovered that the saponified extractant di‐(2‐ethylhexyl) phosphoric acid (D2EHPA) (10%) + tri‐n‐butyl phosphate (TBP) (10%) effectively eliminated interfering elements such as manganese, zinc, and iron, with extraction efficiencies of 95%, 98%, and 99.9%, respectively. To increase the concentration of cobalt in the purified solution, the cobalt recovery step was performed using various acids on the loaded organic phase. The best outcome was achieved using ammonium sulphate salt (1 M), which recovered about 50% of the cobalt present in the organic phase. The recovered cobalt was then subjected to the electrowinning process to produce cobalt metal of high purity. A cathodic current density of 100 A/m2 was determined to be the optimal current for the electrolyte solution. Lastly, scanning electron microscope (SEM) and X‐ray fluorescence (XRF) analyses were carried out to examine the structure and purity of the resulting metallic cobalt, which was found to have a purity of 99.5%.

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Ionic Liquids for the Processing of Rare Earth Elements

Larochelle

2023

Rare Earth Metals and Minerals Industries

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Extraction of dysprosium from waste neodymium magnet solution with ionic liquids and ultrasound irradiation procedure

Cited by 11 publications

References 46 publications

Hydrodynamic features of pulsed solvent extractor for separation of two metals by using the antagonistic effect of solvents

Hydrodynamic features of pulsed solvent extractor for separation of two metals by using the antagonistic effect of solvents

Removal of Co(II) and various metal ions from the residue of the zinc plant through solvent extraction using both acid and neutral extractants

Ionic Liquids for the Processing of Rare Earth Elements

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