Lead(II) extraction from aqueous solutions by pyridine extractants

Wojciechowska, Aleksandra; Wieszczycka, Karolina; Wojciechowska, Irmina; Olszanowski, Andrzej

doi:10.1016/j.seppur.2016.12.036

Cited by 21 publications

(7 citation statements)

References 41 publications

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“…Ionic Liquids Based on Pyridinium, Piperidinium, Pyrrolidinium, Morpholinium, Benzimidazolium, Guanidinium, and Betainium Cations 2.4.1. Heavy Metals Wojciechowska A. et al [70] extracted lead(II) from chloride and nitrate solutions with 1-(3-pyridyl)undecan-1-one oxime 3PC10 and the corresponding pyridinium ionic liquids with chloride and bromide anions: 3-[1-(hydroxyimine)undecyl]-1-propylpyridinium chloride (Ox-3PC10-PrCl) and 3-[1-(hydroxyimine)undecyl]-1-propylpyridinium bromide (Ox-3PC10-PrBr), respectively (using toluene as the diluent). The highest extraction efficiency, amounting to 70-75%, was attained in the case of Ox-3PC10-PrCl.…”

Section: Ilmentioning

confidence: 99%

Ionic Liquids as Components of Systems for Metal Extraction

Yudaev

Chistyakov

2022

ChemEngineering

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This review addresses research and development on the use of ionic liquids as extractants and diluents in the solvent extraction of metals. Primary attention is given to the efficiency and selectivity of metal extraction from industrial wastewater with ionic liquids composed of various cations and anions. The review covers literature sources published in the period of 2010–2021. The bibliography includes 98 references dedicated to research on the extraction and separation of lanthanides (17 sources), actinides (5 sources), heavy metals (35 sources), noble metals, including the platinum group (16 sources), and some other metals.

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Section: Ilmentioning

confidence: 99%

Ionic Liquids as Components of Systems for Metal Extraction

Yudaev

Chistyakov

2022

ChemEngineering

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“…Confirmation of the functional group incorporation was made using the solid-state 13 C and 29 Si CP-MAS NMR spectra as well as XPS and elemental analysis. The 29 Si MAS NMR analysis revealed the presence of three broad peaks at −92, −101, and −110 ppm assigned to Q 2 , Q 3 , and Q 4 silica structural units (Si(OSi) 2 (OH) 2 ), Si(OSi) 3 (OH), and Si(OSi) 4, respectively) (Figure 2a).…”

Section: Synthesis Confirmationmentioning

confidence: 99%

“…For example, Pb(II) can be adsorbed by silica consisting of propylethylenediamine [23], 2,2 -(pentane-1,5-diylbis(oxy))dibenzaldehyde [24], norepinephrine [25], melamine-based dendrimer amines [26], and pyridylpyrazole-β-ketoenol [27] groups. An important class of ligands, with a higher affinity for hard and soft metals, is ionic liquid (IL) such as pyridinium derivatives, which are also very promising for Pb(II) removal both in liquidliquid and liquid-solid systems [28][29][30][31]. The wide use of ionic liquids as extractants in the liquid-liquid system and as ionic liquids' functionalities on a silica or polymer support as adsorbents results from their multi-functionality.…”

Section: Introductionmentioning

confidence: 99%

Novel Mesoporous Organosilicas with Task Ionic Liquids: Properties and High Adsorption Performance for Pb(II)

et al. 2022

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Removal of toxic contaminants such as Pb(II) from waste solutions is environmentally requested. Therefore, in this paper, for potential novel sorbents, mesoporous ionic liquid-functionalized silicas were synthesized and tested for the removal of Pb(II) from aqueous solutions. The successful synthesis of the adsorbents was proved by nuclear magnetic resonance (29Si and 13C NMR), Fourier transform infrared spectroscopy (FTIR), and elemental analysis. The structural and textural properties were determined using scanning electron microscopy (SEM), X-ray diffraction (XRD), high-resolution transmission electron microscopy (TEM), and low-temperature N2 sorption, and the result showed that the applied procedure made it possible to obtain highly ordered particles with a two-dimensional mesostructure. The effects of several parameters including initial pH, contact time, adsorption temperature, and Pb(II) concentration were studied in detail and were discussed to evaluate the adsorption properties of the fabricated materials towards Pb(II). The obtained results confirmed a very high potential of the sorbents; however, the adsorption properties depend on the structure and amounts of the functional group onto fabricated materials. The sample ILS-Ox3-40 showed fast kinetics (equilibrium reached within 10 min) and capacity of 172 mg/g, and that makes it a promising sorbent for the cleanup of water contaminated by lead. It was also indicated that, regardless on structure of the tested materials, the Pb(II) removal was spontaneous and exothermic. The fabricated mesoporous silicas exhibited that they were easy to regenerate and had excellent reusability.

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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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Lead(II) extraction from aqueous solutions by pyridine extractants

Cited by 21 publications

References 41 publications

Ionic Liquids as Components of Systems for Metal Extraction

Ionic Liquids as Components of Systems for Metal Extraction

Novel Mesoporous Organosilicas with Task Ionic Liquids: Properties and High Adsorption Performance for Pb(II)

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

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