Removal of Cadmium from Cobalt Sulfate by Solvent Extraction Using Cyanex 301

Qian, Z.; Qiao, Jinxi; Jiang, Daoyan; Lin, Jixing; Chen, Ailiang; Ma, Yuehui; Zhang, Yan

doi:10.1007/s11837-018-2946-5

Cited by 4 publications

(1 citation statement)

References 16 publications

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“…Sole et al have reported on the stability of Cyanex extractants, noting that although Cyanex 302 is effective, it may lack the chemical stability of Cyanex 301, which has been shown to be robust even after 3000 hours in a 3 M sulfuric acid solution at 60°C, making it more favorable for long-term industrial use [12] . However, when Cyanex 301 is used in highconcentration cobalt sulfate solutions (Co: 90 g/L), a signi cant co-extraction of Co occurs, leading to material losses which is economically suboptimal [13] . Thus, the paramount challenge is to optimize the separation of Cd from high-concentration cobalt sulfate solutions while minimizing the co-extraction of Co, to preserve its economic value.…”

Section: Introductionmentioning

confidence: 99%

Efficient Separation of Cadmium from Cobalt-Rich Solutions Using Cyanex301 and P204/P507

Qian,

Li,

et al. 2024

J. Sustain. Metall.

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The presence of cadmium (Cd) in ternary batteries is a known detriment to both their service longevity and cycling performance. Traditional methods for reducing Cd levels in cobalt (Co) sulfate solutions can be effective but often result in signi cant losses of Co. This study introduces an enhanced dualextractant system that combines 5% (V/V) di-2-ethylhexyl phosphoric acid (P204) with 5% (V/V) bis (2,4,4-trimethylpentyl) dithiophosphinic acid (Cyanex301) to effectively lower Cd content without substantial Co depletion. Conducted at a pH of 1.8 with a 1:1(V/V) organic-to-aqueous phase ratioat 25 °C for 10 minutes, our approach achieved a 99.99% extraction e ciency for Cd and limited Co extraction to just 0.53%. Subsequent stripping processes utilized 1 M sulfuric acid and 6 M hydrochloric acid to recover 87.13% of Co and 95.11% of Cd. An e cient process roadmap operated at optimized condition was constructed for plant-wide treatment of the cobalt sulfate solution containing Cd. The innovative results hold the potential to accelerate advancements in secondary resource recycling, especially Cd and Co.

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Section: Introductionmentioning

confidence: 99%

Efficient Separation of Cadmium from Cobalt-Rich Solutions Using Cyanex301 and P204/P507

Qian,

Li,

et al. 2024

J. Sustain. Metall.

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Improvement of hybrid liquid membrane performance in removal of cadmium from wastewater using GO filled-polyethersulfone membrane

Mahikar,

Mortaheb

2024

Polymer-Plastics Technology and Materials

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Thermodynamic Analysis of Trace Cobalt(II) Extraction from Cobalt Chloride Aqueous Solution Using Cyanex 272 in Kerosene

Chun-yuan

Liu

Xie

et al. 2021

Journal of Nanoelectronics and Optoelectronics

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In this study, it was researched that the extraction of Co(II) from CoCl2 aqueous solutions using Cyanex 272 (bis(2,4,4-trimethylpentyl) phosphonic acid) in kerosene and determined the effects of the equilibrium pH value, extractant concentration and chloride ion concentration on the extraction of cobalt at different temperatures. The results indicate that the distribution ratio of cobalt increases as the equilibrium pH value, extractant concentration and extraction temperature increase. However, the cobalt distribution ratio decreases as the chloride ion concentration increases. We calculated the equilibrium constants (AH9, AG9, and AS9) for a range of temperatures and investigated the relationship between AG9 and T. The extraction reaction of cobalt was determined to be an endothermic reaction; thus, raising the temperature was beneficial to the reaction.

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Removal of Cadmium from Cobalt Sulfate by Solvent Extraction Using Cyanex 301

Cited by 4 publications

References 16 publications

Efficient Separation of Cadmium from Cobalt-Rich Solutions Using Cyanex301 and P204/P507

Efficient Separation of Cadmium from Cobalt-Rich Solutions Using Cyanex301 and P204/P507

Improvement of hybrid liquid membrane performance in removal of cadmium from wastewater using GO filled-polyethersulfone membrane

Thermodynamic Analysis of Trace Cobalt(II) Extraction from Cobalt Chloride Aqueous Solution Using Cyanex 272 in Kerosene

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