Separation of Pd(II) and Pt(IV) from hydrochloric acid solutions by solvent extraction with Cyanex 301 and LIX 63

Truong, Hoai Thanh; Lee, Man Seung

doi:10.1016/j.mineng.2017.10.001

Cited by 45 publications

(26 citation statements)

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“…[16]. In our work on the extraction of Pd(II) from hydrochloric acid solution, it was found that LIX 63 and Cyanex 301 could extract Pd(II) from HCl solution [11,17]. However, the extraction percentage of Pd(II) with LIX 63 was decreased rapidly when the HCl concentration was higher than 7 mol/L.…”

Section: Reagents and Chemicalsmentioning

confidence: 92%

“…However, the extraction percentage of Pd(II) with LIX 63 was decreased rapidly when the HCl concentration was higher than 7 mol/L. Although Pd(II) was completely extracted by Cyanex 301 in the HCl concentration range from 0.5 to 9 mol/L, it was challenging to strip the Pd(II) in the loaded Cyanex 301 phase [11]. Various extractant mixtures have been employed to separate PGMs, but only a few papers have reported the synergistic extraction of Pd(II).…”

Section: Reagents and Chemicalsmentioning

confidence: 99%

“…In previous works, we have investigated the extraction of Pd(II) with some single extractants [11]. In that study, Cyanex 301 and LIX 63 were found to selectively extract Pd(II) over Pt(IV) with high efficiency.…”

Section: Extraction Of Pd(ii) With Mixture Of Cyanex 301 and Various mentioning

confidence: 99%

“…Because the consumption of Pd increases each year, the recovery of this metal from either ores or secondary resources is essential. Several methods are used in the separation of Pd(II) from the leaching solutions of HCl or HNO 3 , such as precipitation [3], ion exchange [2,4], and solvent extraction [5][6][7][8][9][10][11][12]. Among these methods, solvent extraction is suitable for the separation of platinum group metals (PGMs) because of its high selectivity and the purity of metals thus obtained [9].…”

Section: Introductionmentioning

confidence: 99%

“…Although Pd(II) can be extracted by Cyanex 301, the stripping is very difficult owing to the strong interaction between Pd(II) and Cyanex 301 [6,11]. A low acid concentration is favorable for the extraction of Pd(II) with LIX 84I and PC 88A [13,14].…”

Section: Introductionmentioning

confidence: 99%

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Extraction of Palladium(II) from Hydrochloric Acid Solutions by Solvent Extraction with Mixtures Containing Either Cyanex 301 or LIX 63

Truong

Lee

Son

2017

Metals

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Cyanex 301 and 5,8-diethyl-7-hydroxyldodecane-6-oxime (LIX 63) can selectively extract Pd(II) over Pt(IV) from concentrated hydrochloric acid solutions. Therefore, solvent extraction experiments have been performed by extractant mixtures containing either Cyanex 301 or LIX 63, and the extraction behavior of Pd(II) was compared. Among the mixtures of Cyanex 301, the highest synergistic enhancement coefficient was achieved by mixing Cyanex 301 and trioctylphosphine oxide (TOPO). However, it was very difficult to strip the Pd(II) from the loaded mixture phase. Among the mixtures of LIX 63, the mixture of LIX 63 and alamine 336/TOPO enhanced the extraction of Pd(II). Although the synergistic coefficient by Cyanex 301 + TOPO was higher than that by LIX 63 + Alamine 336, the Pd(II) in the loaded mixture phase of LIX 63 and alamine 336 was easily stripped by thiourea.

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Section: Reagents and Chemicalsmentioning

confidence: 92%

Section: Reagents and Chemicalsmentioning

confidence: 99%

Section: Extraction Of Pd(ii) With Mixture Of Cyanex 301 and Various mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Extraction of Palladium(II) from Hydrochloric Acid Solutions by Solvent Extraction with Mixtures Containing Either Cyanex 301 or LIX 63

Truong

Lee

Son

2017

Metals

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Solvent extraction separation of Au(III) from Pd(II), Cu(II), Ni(II) in HCl solution using cationic, neutral and basic extractants

Nguyen,

Song,

Lee

2023

J of Chemical Tech & Biotech

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BackgroundEtching solutions of spent printed circuit boards (PCBs) contain precious metal ions like Au(III) and Pd(II) together with Cu(II). Therefore, it is crucial to recover Au(III) and Pd(II) from these solutions. To investigate the possibility of separating Au(III) from the etching solutions, solvent extraction experiments were conducted using synthetic hydrochloric acid solutions containing Au(III), Pd(II), Cu(II), and Ni(II). The solvent extraction behavior of these four metal ions was investigated by using cationic (Cyanex 301, LIX 63), neutral (Cyanex 923 and TBP), and basic (Alamine 336 and Aliquat 336) extractants in the HCl concentration range from 1 to 9 M.ResultsTBP and Cyanex 923 were successful in separating Au(III) from other metal ions when the HCl concentration was higher than 7 M. When the concentrations of Au(III) and Pd(II) changed from 0.1 to 5 g/L, TBP was able to selectively extract Au(III) from 7 M HCl solution, while Cyanex 923 was effective in separating Au(III) from 9 M HCl solution. However, Au(III) and Pd(II) were co‐extracted by Alamine 336 and Aliquat 336 from 1 M HCl solution. Thiourea or a mixture of thiourea and HCl solution effectively stripped Au(III) from the loaded organic phases of TBP, Cyanex 923, and amines.ConclusionsAmong the six kinds of the extractants employed in this work, TBP was recommended as an extractant for the selective extraction of Au(III) from the HCl solutions containing Cu(II), Ni(II) and Pd(II) on the basis of high separation degree.This article is protected by copyright. All rights reserved.

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Sorption of Palladium(II) from Aqueous Solution Using Diphenylthiocarbazone Immobilized onto Kieselguhr

Gamal

Rizk

El-Hefny

2022

J Inorg Organomet Polym

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Kieselguhr was immobilized with diphenylthiocarbazone (dithizone) and utilized as a new sorbent to extract palladium ions from an aqueous solution. The physicochemical features of the immobilized kieselguhr (K–Dz) were specified by Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy and thermogravimetric analysis–differential thermal analysis. The average crystal size of the prepared material was found to be 24.41 nm. The sorption potential of the immobilized kieselguhr for the extraction of Pd(II) and La(III) in a batch mode was studied. The effects of pH, shaking time as well as the initial concentration of metals have been examined. The results demonstrate that the optimum pH was found to be 4.5 and the equilibrium was attained within 15.0 min. The adsorption kinetics and equilibrium data were well described by the pseudo-second-order kinetic model and Sips isothermal model with a maximum sorption capacity of 20.3 (mg/g). Thermodynamic parameters of the studied metal ions show that the process is spontaneous and endothermic in nature. The desorption process of Pd(II) was highly managed using acidified thiourea giving a desorption percent of approximately 80.0%. The separation possibility of Pd(II) from some metal ions such as La(III) was achieved successfully. The developed (K–Dz) composite method was applied for the recovery and separation of Pd(II) and other metal ions from a simulated automotive catalyst leachate solution. The results indicated that the (K–Dz) composite has a good reusability potential.

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Separation of Pd(II) and Pt(IV) from hydrochloric acid solutions by solvent extraction with Cyanex 301 and LIX 63

Cited by 45 publications

References 20 publications

Extraction of Palladium(II) from Hydrochloric Acid Solutions by Solvent Extraction with Mixtures Containing Either Cyanex 301 or LIX 63

Extraction of Palladium(II) from Hydrochloric Acid Solutions by Solvent Extraction with Mixtures Containing Either Cyanex 301 or LIX 63

Solvent extraction separation of Au(III) from Pd(II), Cu(II), Ni(II) in HCl solution using cationic, neutral and basic extractants

Sorption of Palladium(II) from Aqueous Solution Using Diphenylthiocarbazone Immobilized onto Kieselguhr

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