Copper recovery from chloride solutions using liquid extraction with pyridinecarboximidamides as extractants

Wojciechowska, Irmina; Wieszczycka, Karolina; Aksamitowski, Przemysław; Wojciechowska, Aleksandra

doi:10.1016/j.seppur.2017.06.051

Cited by 17 publications

(2 citation statements)

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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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Section: Introductionmentioning

confidence: 99%

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

et al. 2022

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“…chloride) and alkaline (e.g. NH 4 OH) solutions depending on the properties of the extractant and the extracted metal ions (Wojciechowska et al, 2017;Das et al, 2021;Bożejewicz et al, 2019). Extraction processes performed with utilization of different pyridine derivatives were described in the literature for many metal ions, including noble and radioactive metals (Werlinger and Rojas, 2020;Dubenskiy et al, 2020;Wang et al, 2021;Steczek et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Chemical and Process Engineering

2022

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In this article, we present the results of the first application of 2-benzoylpyridine (2-BP) as a carrier in adsorptive polymeric materials dedicated for the removal of Ag(I) and Cu(II) ions from model acidic solutions. In the first stage of the research, the classical solvent extraction, in which 2-BP was used as an extractant, allowed to determine the proper conditions for conducting adsorptive processes. The stability constants of 2-BP complexes with analyzed metal ions were determined using the spectrophotometric method. The electrospray ionization (ESI) high-resolution mass spectrometry (HRMS) method was applied for the confirmation of the ability of 2-BP molecules to form complexes with Cu 2+ metal ions in a solution and to determine the elemental composition of generated complexes (to identify the ratio of the number of metal ions to the number of molecules of 2-BP). The obtained results indicate that both the adsorptive processes and solvent extraction strongly depend on the properties of metal ions and that the use of 2-BP as a carrier/extractant allows for efficient removal of silver(I) ions and much less effective removal of copper(II) ions. The utilization of adsorptive polymeric materials is in line with the contemporary research trends that focus on eco-friendly and cost-effective methods.

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Copper(II) Chelating Agents

Aksamitowski

Wieszczycka

2020

Practical Aspects of Chemical Engineering

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Copper recovery from chloride solutions using liquid extraction with pyridinecarboximidamides as extractants

Cited by 17 publications

References 30 publications

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

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

Chemical and Process Engineering

Copper(II) Chelating Agents

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