The application of membrane extraction in the separation of zinc and cadmium ions

Radzyminska-Lenarcik, Elzbieta; Witt, Katarzyna

doi:10.5004/dwt.2018.22628

Cited by 9 publications

(13 citation statements)

References 45 publications

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“…In the case of zinc ions, tetrahedral complexes are formed next to octahedral complexes, facilitating the transport of Zn(II) ions through the membrane [ 46 , 49 , 53 , 54 ]. A similar phenomenon was observed in the case of Zn(II) separation from Zn–Cd–Co–Ni mixtures [ 65 ], Zn-Cd mixtures [ 51 ], Zn–Cd–Ni mixtures [ 45 ], and Zn–Mn mixtures [ 46 ], as well as zinc recovery from metallurgical waste [ 66 ] or galvanic wastewater [ 53 ].…”

Section: Resultssupporting

confidence: 65%

“…1-alkyl-2-methylimidazole (alkyl—from hexyl to octyl, and decyl) was used for Cu separation from a Cu–Zn–Co–Ni mixture [ 42 , 48 , 49 , 50 ], as well for Zn separation from a Zn–Cd–Ni mixture [ 45 ]. Separation of Zn from a Zn–Cd [ 51 ] or a Zn–Mn [ 45 ] mixture is also possible using alkyl imidazole derivatives.…”

Section: Introductionmentioning

confidence: 99%

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Application of Polymer Inclusion Membranes Doped with Alkylimidazole to Separation of Silver and Zinc Ions from Model Solutions and after Battery Leaching

2020

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New materials, such as polymer inclusion membranes, can be used for water and wastewater treatment. In this paper, the selective transport of silver(I) and zinc(II) ions from nitrate solutions through the polymer inclusion membranes (PIMs), which consist of cellulose triacetate as a polymeric support, o-nitrophenyl pentyl ether as a plasticizer, and either 1-hexylimidazole (1) or 1-hexyl-2-methylimidazole (2) as an ion carrier, is studied. Both Zn(II) and Ag(I) model solutions (CM = 0.001 M, pH = 6.5), as well as the solutions after the leaching of a spent battery with a silver–zinc cell (silver-oxide battery), are tested. The results show that Zn(II) ions are effectively transported through PIMs containing either carrier, whereas Ag(I) is more easily transported through PIMs doped with (1). In the case of the leaching solution after 24 h transport, the recovery coefficients of Ag(I) and Zn(II) for PIMs doped with (1) are 86% and 90%, respectively, and for PIMs doped with (2), 47% and 94%, respectively. The influence of basicity and structure of carrier molecules on transport kinetics is discussed as well. PIMs are characterized by using an atomic force microscopy (AFM) technique.

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Section: Resultssupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Application of Polymer Inclusion Membranes Doped with Alkylimidazole to Separation of Silver and Zinc Ions from Model Solutions and after Battery Leaching

2020

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“…For the tested carriers, no relationship was observed between the roughness of the membrane and the molar intrinsic volumes of the tested carriers, as was previously observed when the derivatives of imidazole azothiacrown ethers [49] were used. Nevertheless, the membranes with 1-octyl-alkyl derivatives of imidazole had lower molar intrinsic volumes and showed lower roughness than membranes with 1-decyl-alkyl derivatives of imidazole used in papers [26,30,53], which had larger molar intrinsic volumes. The roughness values determined for polymer inclusion membranes with carriers 1 – 4 were insignificantly higher than for the commercial di-(2-ethylhexyl) phosphoric acid (D2EHPA) carrier (4.7 nm) used by Salazar-Alvarez [50].…”

Section: Resultsmentioning

confidence: 89%

“…The roughness (R q ) and effective pore sizes of the membrane were calculated using atomic force microscopy (AFM), and they are shown in Table 1 along with the data of membranes doped with 1-decyl-2-methylimidazole [30], 1-decyl-4-methylimidazole [26], and 1-decyl-2,4-dimethylimidazole [53].…”

Section: Resultsmentioning

confidence: 99%

“…The steric effect of the substituent at position 2 or 4 decreases the stability constants of octahedral complexes of all the metals studied, although it does not hinder the formation of tetrahedral species [29,30,53,55,58,59,60,61,62]. The formation of tetrahedral complexes with 1-alkylimidazoles has been proven for the Zn(II) and Cd(II) ions [42,56,59,71].…”

Section: Resultsmentioning

confidence: 99%

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Polymer Inclusion Membranes (PIMs) Doped with Alkylimidazole and their Application in the Separation of Non-Ferrous Metal Ions

Radzyminska-Lenarcik

Ulewicz

2019

Polymers

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The study involved the transport of zinc(II), cadmium(II), and nickel(II) ions from acidic aqueous solutions using polymer inclusion membranes (PIMs). PIMs consisted of cellulose triacetate (CTA) as a support; o-nitrophenyl pentyl ether (o-NPPE) as a plasticizer; and 1-octylimidazole (1), 1-octyl-2-methylimidazole (2), 1-octyl-4-methylimidazole (3), or 1-octyl-2,4-dimethylimidazole (4) as ion carriers. The membranes were characterized by means of atomic force microscopy (AFM) and scanning electron microscopy (SEM). The results show that Zn(II) and Cd(II) are effectively transported across PIMs, while Ni(II) transport is not effective. The rate of transport of metal ions across PIMs is determined by the diffusion rate of the M(II)–carrier complex across the membrane. The best result achieved for Zn(II) removal after 24 h was 95.5% for the ternary Zn(II)–Cd(II)–Ni(II) solution for PIM doped (4). For this membrane, the separation coefficients for Zn(II)/Cd(II), Zn(II)/Ni(II), and Cd(II)/Ni(II) were 2.8, 104.5, and 23.5, respectively. Additionally, the influence of basicity and structure of carrier molecules on transport kinetics was discussed.

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Electrochemical and Theoretical Modelled Reduction of β‐Diketone Inspired Chalcones

Izuchukwu Ugwu,

Conradie

2024

ChemistrySelect

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The growing interest in synthesizing electrochemically active organic ligands stems from extensive reports highlighting the applications of redox‐active organic molecules. These molecules play a crucial role in capturing and converting CO2 into valuable organic compounds, including carbonates used as solvents in lithium batteries. In this study, we present an electrochemical investigation of two chalcone derivatives, referred to as (1) and (2). We explored the influence of different solvent systems, specifically acetonitrile and dimethyl sulfoxide, on the reduction potential of these chalcones. The reported chalcone derivatives were characterized using various analytical techniques, including UV/Visible spectroscopy, Fourier Transform Infrared spectroscopy, Proton and Carbon‐13 nuclear magnetic resonance, as well as mass spectrometry. The characterization of the reported chalcones, exhibiting properties of both β‐diketones and 2‐hydroxyphenones, is underscored by a density functional theory (DFT) study of chalcones (1) and (2). This research establishes a correlation between the energies calculated through DFT and the experimental reduction potentials of chalcones (1) and (2), in comparing them with a series of β‐diketones and 2‐hydroxyphenones.

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The application of membrane extraction in the separation of zinc and cadmium ions

Cited by 9 publications

References 45 publications

Application of Polymer Inclusion Membranes Doped with Alkylimidazole to Separation of Silver and Zinc Ions from Model Solutions and after Battery Leaching

Application of Polymer Inclusion Membranes Doped with Alkylimidazole to Separation of Silver and Zinc Ions from Model Solutions and after Battery Leaching

Polymer Inclusion Membranes (PIMs) Doped with Alkylimidazole and their Application in the Separation of Non-Ferrous Metal Ions

Electrochemical and Theoretical Modelled Reduction of β‐Diketone Inspired Chalcones

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