Selective extraction of copper from Cu-Zn sulfate media by new generation extractants

Aksamitowski, Przemysław; Filipowiak, Kinga; Wieszczycka, Karolina

doi:10.1016/j.seppur.2019.03.100

Cited by 18 publications

(4 citation statements)

References 30 publications

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“…Two of the most prevalent methods to determine the stoichiometry of metal-extractant complexes in organic solvents are the equilibrium slope (Aksamitowski et al, 2019;Ghosh et al, 2018;Sulaiman and Othman, 2018) and numerical analyses (Chang et al, 2011). The former is a graphical method where the stoichiometry of metal-extractant complexes is estimated from the slopes of experimental plots, while the latter involves a multiple regression analysis where the stoichiometry of metal-extractant complexes is evaluated from the best least-squares fit to the experimental data.…”

Section: Stoichiometry Of Cu(ii)-ffa Complexes In Pkfadmentioning

confidence: 99%

“…Since extractant is a ligand (Lewis base) which coordinates to a metal ion (Lewis acid) via a Lewis acid-base reaction to produce a metal-extractant complex, different extractants with distinct sizes, charges, and electron configurations would have a considerable impact on the coordination number (Reid, 2018), and thus the stoichiometry of the metal-extractant complexes formed. Different diluents, on the other hand, tend to show varying degrees of intermolecular interaction with the extractant depending on their dipole moments, solubility, and dielectric constant (Aksamitowski et al, 2019) and, thus, may also affect the number of extractant molecules bound to a metal ion. Accordingly, the dissimilarities in both the extractant and diluent used between this work and other similar works (F. Adjel and D.Barkat, 2011;Guerdouh and Barkat, 2015) led to the discrepancy in the stoichiometry of Cu(II)-FFA complexes obtained.…”

Section: Numerical Analysismentioning

confidence: 99%

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Extraction of Cu(II) From Acidic Sulfate Media by Palm Kernel Fatty Acid Distillate: Stoichiometry and Thermodynamic Studies

Halim¹,

Morad²,

Chang³

2021

Preprint

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In efforts to develop a novel low-cost and eco-friendly organic solvent, namely, palm kernel fatty acid distillate (PKFAD), with free fatty acids (FFAs) as the active components, for Cu(II) extraction from acidic sulfate media, this work aimed to gain insight into the stoichiometry of Cu(II)-FFA complexes (extracted species) in PKFAD and their extraction thermodynamics. The former was explored by both the equilibrium slope and numerical analyses, while the latter was determined from the extraction of Cu(II) by PKFAD at different temperatures. Both the equilibrium slope and numerical analyses revealed that the stoichiometry of Cu(II)-FFA complexes in PKFAD was 1:6, whereas the thermodynamic study indicated that Cu(II) extraction by PKFAD was exothermic, nonspontaneous, and enthalpy-driven over the temperature range studied. A plausible structure of Cu(II)-FFA complexes in PKFAD was also postulated based on the thermodynamic data obtained.

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Section: Stoichiometry Of Cu(ii)-ffa Complexes In Pkfadmentioning

confidence: 99%

Section: Numerical Analysismentioning

confidence: 99%

Extraction of Cu(II) From Acidic Sulfate Media by Palm Kernel Fatty Acid Distillate: Stoichiometry and Thermodynamic Studies

Halim¹,

Morad²,

Chang³

2021

Preprint

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“…However, Ni 2+ in the leach solution of waste lithium-ion batteries starts to precipitate when the pH is about 7, so it is necessary to control the pH of the leach solution between 4.5 and 5, in which case a Al 3+ removal rate of more than 98% can be achieved [13,14]. The main methods used to remove Cu 2+ from the leaching solution include extraction [15,16], Fe powder replacement [17], and Na 2 S 2 O 3 [18]. M5640 is the commonly used extraction agent for copper extraction.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis and Experimental Optimization for the Purification of Ni-Co-Mn Mixed Sulfate Solution from the Recovery Process of Lithium-Ion Batteries

Zhou

Yang²,

Zhang

et al. 2023

Crystals

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Based on the principles of mass conservation, chemical equilibrium, and electron charge neutrality, a thermodynamic equilibrium system was established for the nickel-cobalt-manganese sulfate leaching solution in the recovery process of spent lithium-ion batteries. By changing the ion concentration in the system, calculating the pH value, and identifying the complexes of Cu2+, Fe3+, PO43-, Al3+, and F− in the system, the results were obtained and used to draw the thermodynamic diagram. The solution thermodynamic calculation and experiment were combined to purify the nickel-cobalt-manganese-rich leachate. The results show that the main Cu2+, Fe3+, PO43-, Al3+, and F− impurity ions could all be reduced to less than 10 ppm under the optimized process parameters.

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“…However, these resins do not have a significant adsorption capacity, while the regeneration of efficient chelating resins requires a strong acid desorbing agent, such as 4 M HCl in the case of glycidyl methacrylate-based polymer resins [ 13 ] or 1 M HNO 3 in the case of cross-linked polyzwitterionic acid [ 14 ]. In the presented research, the precursors of the pyridinium moieties that were introduced onto the polymer surface are N -decyloxy-1-(pyridnyl)ethanimines with high potential as metal extractants from neutral and acidic aqueous solutions (Fe(III) from HCl [ 15 ], Cu(II) and Cu(I) from chloride and sulfate solution [ 16 , 17 , 18 ], Pb(II) from acidic chloride–nitrate solution [ 19 , 20 ], and Zn(II) from HCl solution [ 21 ]). These compounds show exceptionally high metal ion removal efficiency in liquid–liquid and membrane systems [ 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Poly(vinylbenzyl Pyridinium Salts) as Novel Sorbents for Hazardous Metals Ions Removal

et al. 2022

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Novel efficient complexing resins—poly(vinylbenzyl pyridinium salts) fabricated through poly(vinylbenzyl halogene-co-divinylbenzene) quaternization of N-decyloxy-1-(pyridin-3-yl)ethaneimine and N-decyloxy-1-(pyridin-4-yl)ethaneimine—were tested as adsorbents of Pb(II), Cd(II), Cu(II), Zn(II), and Ni(II) from aqueous solutions. The structure of these materials was established by 13C CP-MAS NMR, X-ray photoelectron spectroscopy, elemental analysis, and Fourier transform infrared spectroscopy, as well as thermogravimetric and differential thermal analyses. The textural properties were determined using scanning electron microscopy and low-temperature N2 sorption. Based on the conducted sorption studies, it was shown that the uptake behavior of the metal ions towards novel resins depended on the type of functionalities, contact time, pH, metal concentrations, and the resin dosage. The Langmuir model was investigated to be the best one for fitting isothermal adsorption equilibrium data, and the corresponding adsorption capacities were predicted to be 296.4, 201.8, 83.8, 38.1, and 39.3 mg/g for Pb(II), Zn(II), Cd(II), Cu(II), and Ni(II), respectively. These results confirmed that owing to the presence of the functional pyridinium groups, the resins demonstrated proficient metal ion removal capacities. Furthermore, VBBr-D4EI could be successfully used for the selective uptake of Pb(II) from wastewater. It was also shown that the novel resins can be regenerated without significant loss of their sorption capacity.

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Selective extraction of copper from Cu-Zn sulfate media by new generation extractants

Cited by 18 publications

References 30 publications

Extraction of Cu(II) From Acidic Sulfate Media by Palm Kernel Fatty Acid Distillate: Stoichiometry and Thermodynamic Studies

Extraction of Cu(II) From Acidic Sulfate Media by Palm Kernel Fatty Acid Distillate: Stoichiometry and Thermodynamic Studies

Thermodynamic Analysis and Experimental Optimization for the Purification of Ni-Co-Mn Mixed Sulfate Solution from the Recovery Process of Lithium-Ion Batteries

Poly(vinylbenzyl Pyridinium Salts) as Novel Sorbents for Hazardous Metals Ions Removal

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