New Solvent Extraction Process of Nickel and Copper by D2EHPA in the Presence of Carboxylates

Irannajad, Mehdi; Haghighi, Hossein Kamran; Nasirpour, Zeinab

doi:10.1007/s12666-020-01940-w

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…Di(2ethylhexyl)phosphoric acid (D2EHPA or P204) [37,38], hexyl phosphonic acid mono-2-ethyl-hexyl ester (P507 or PC88A) [39], Bis(2,4,4-trimethylpentyl)phosphinic acid (Cyanex272) [40] were most widely used, the three extraction solvent acid decreased gradually enhanced the ability of separation of cobalt and nickel in turn. D2EHPA can extract many metallic cations from various Carboxylates [41], Citrate [42][43][44], chloride [37,38,45], nitric [46,47], and sulfate [48][49][50]solutions. After the first commercial process using D2EHPA, P507 was developed and widely used in base-metal solvent extraction [39].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Quaternary Ammonium Lignin Based Ionic Liquids and Comparison of Extraction Behavior of Co(II) and Ni(II) with 2-Ethylhexyl Phosphoric Acid Mono-2-ethylhexyl Ester

Li,

2024

Preprint

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Two interesting compounds such as quaternary ammonium lignin(QAL) and 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester (P507) were synthesized as ionic liquids(QP-ILs) for the extraction of metal ions. The extraction behavior of Co(II) and Ni(II) from chloride solution was compared between QP-ILs and P507. The results showed that the extraction rates of Co(II) and Ni(II) in the two solutions varied with the extraction conditions, but QP-ILs has stronger extractability for cobalt than P507, while Ni is on the contrary. Under the same conditions, the Co/Ni separation performance(βCo/Ni) in QP-ILs is superior to that in p507. At pH4.0, 55℃, concentration of 20%, extraction time of 10 minutes, the βCo/Ni of QP-ILs reached to 2703, while that of P507 was only 164. In conclusion, QP-ILs was more efficient than P507 for separating Co from mixed solutions.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Quaternary Ammonium Lignin Based Ionic Liquids and Comparison of Extraction Behavior of Co(II) and Ni(II) with 2-Ethylhexyl Phosphoric Acid Mono-2-ethylhexyl Ester

Li,

2024

Preprint

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“…Among these acids, D2EHPA was the most commonly used solvent. D2EHPA can extract various metallic cations from various Carboxylates [43], Citrate [44][45][46], chloride [47], nitric [48,49], and sulfate [50,51] solutions. After the first commercial process using D2EHPA, P507 was developed and widely used in base-metal solvent extraction [41].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Quaternary-Ammonium-Lignin-Based Ionic Liquids and Comparison of Extraction Behavior of Co(II) and Ni(II) with 2-Ethylhexyl Phosphoric Acid Mono-2-Ethylhexyl Ester

Li,

2024

Separations

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The escalating demand for cobalt in modern industry necessitates the recycling or extraction of this resource for sustainable development. Despite the abundance of lignin in nature, its utilization remains low, highlighting the need to enhance its value-added potential. This study focuses on the synthesis of quaternary ammonium lignin (QAL) and 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester (P507) as ionic liquid (QP–IL) compounds for the extraction of metal ions. A comparison of the extraction behavior of Co(II) and Ni(II) from chloride solution between QP–IL and P507 revealed varying extraction ratios under different conditions, with QP–IL demonstrating a higher cobalt extractability than P507. Furthermore, under identical conditions, QP–IL exhibited superior Co/Ni separation performance (βCo/Ni) compared to P507. Ultimately, QP–IL proved to be more effective than P507 in separating cobalt from mixed solutions.

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“…In another study, the effect of sodium acetate, sodium citrate, and the addition of sodium oxalate was investigated in the D2EHPA system for the extraction of nickel and copper. 20 Furthermore, the effect of various parameters such as pH, the concentrations of carboxylates, and time was determined. By adding 1 g/L sodium oxalate to 20% D2EHPA, the maximum separation of nickel and copper at the concentrations of 500 mg/L was obtained at the pH of 5 within a time of 10 min.…”

Section: Introductionmentioning

confidence: 99%

Solvent extraction of nickel from iron and cobalt containing sulfate solutions

Arslan¹,

Güven²,

Yenial³

et al. 2023

MSEIJ

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In this study, solvent extraction is applied for extracting nickel from sulfate solutions containing iron and cobalt ions. This process can also be applied for the cleaning of waste solutions and for increasing solution concentrations after the leaching of low-grade nickel ores. Di-2-Ethylhexyl phosphoric acid (D2EHPA) was used as an extractant for this purpose. Effects of pH, aqueous/organic (A/O) phase ratio, iron, and cobalt ion contents of the solution on nickel extraction efficiency were investigated. The McCabe-Thiele diagrams for extraction and stripping steps were developed to determine the number of stages required. A total of two stages were required for 96.3% of Ni extraction and a total of two stages to strip nickel with 98% efficiency.

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New Solvent Extraction Process of Nickel and Copper by D2EHPA in the Presence of Carboxylates

Cited by 5 publications

References 21 publications

Synthesis of Quaternary Ammonium Lignin Based Ionic Liquids and Comparison of Extraction Behavior of Co(II) and Ni(II) with 2-Ethylhexyl Phosphoric Acid Mono-2-ethylhexyl Ester

Synthesis of Quaternary Ammonium Lignin Based Ionic Liquids and Comparison of Extraction Behavior of Co(II) and Ni(II) with 2-Ethylhexyl Phosphoric Acid Mono-2-ethylhexyl Ester

Synthesis of Quaternary-Ammonium-Lignin-Based Ionic Liquids and Comparison of Extraction Behavior of Co(II) and Ni(II) with 2-Ethylhexyl Phosphoric Acid Mono-2-Ethylhexyl Ester

Solvent extraction of nickel from iron and cobalt containing sulfate solutions

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