Selective Transport of Cu(II) across a Polymer Inclusion Membrane with 1-Alkylimidazole from Nitrate Solutions

Radzyminska-Lenarcik, Elzbieta; Ulewicz, Małgorzata

doi:10.1080/01496395.2011.646378

Cited by 28 publications

(34 citation statements)

References 17 publications

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“…The transport experiments were carried out in a permeation module cell described in our earlier paper (22,23). The membrane film (having a surface area of 4.9 cm 3 ) was tightly clamped between two cell compartments.…”

Section: Transport Studiesmentioning

confidence: 99%

Application of Polymer and Supported Membranes with 1-Decyl-4-Methylimidazole for Pertraction of Transition Metal Ions

Ulewicz

Radzyminska-Lenarcik

2014

Separation Science and Technology

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The facilitated transport of Zn(II), Cd(II), Co(II), and Ni(II) ions from different aqueous chloride source phases (c Me = 0.001 mol/dm 3 , pH = 6.0) across supported (SLMs) and polymer inclusion membranes (PIMs) doped with 1-decyl-4-methylimidazole as ion carrier was reported. The membrane is characterized by means of atomic force microscopy (AFM). The results show that Zn(II) can be separated very effectively from other transition metal cations as Cd(II), Co(II), and Ni(II) from different equimolar mixtures of such ions. The higher initial fluxes for Zn(II) were found for PIM (3.62-4.10 µmol/m 2 .s), while the lower values were observed for SLM. However, after taking into account the morphology (porosity, tortuosity) of the membranes, the values of the initial flux of Zn(II) transport across the PIM are lower than those across the SLM. The recovery factor of Zn(II) ions during transport across PIM and SLM from different mixtures of cations is above 95% after 24 hrs. PIM containing 1-decyl-4-methylimidazole are stable for 120 hrs.Keywords polymer inclusion membrane (PIM); supported liquid membrane (SLM); separation of metal ions; imidazole derivatives INTRODUCTIONSupported liquid membranes (SLM) and polymer inclusion membranes (PIM) represent an attractive liquid-to-liquid extraction for the selective removal and concentration of nonferrous metal ions (Zn(II), Co(II), Ni(II), Cd(II), Cu(II), and Pb(II)) from aqueous solutions. The transport of such metal ions across SLM and PIM can be described as the simultaneous extraction and back-extraction operations combined in

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Section: Transport Studiesmentioning

confidence: 99%

Application of Polymer and Supported Membranes with 1-Decyl-4-Methylimidazole for Pertraction of Transition Metal Ions

Ulewicz

Radzyminska-Lenarcik

2014

Separation Science and Technology

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“…For instance, 1-vinylimidazole derivative enables the separation of Cu(II), and Fe(III) (10). 1-Alkylimidazole, and 1-alkyl-2-methylimidazole have been used for the separation of Cu(II) ions from chloride and nitrate solutions containing nonferrous cations (Zn(II), Co(II), and Ni(II)) (11)(12)(13).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Alkyl Chain Length and Steric Effect on the Stability Constants and Extractability of Co(II) Complexes with 1-Alkyl-2-Methylimidazoles

Radzyminska-Lenarcik

Witt

2014

Separation Science and Technology

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Using the liquid-liquid partition method, the formation of Co(II) complexes with 1-alkyl-2-methylimidazoles (where alkyl = C 4 H 9 trough C 12 H 25 ) at 25 • C and at a fixed ionic strength of the aqueous phase (I = 0.5, (HL)NO 3 , KNO 3 ) were studied. Dichloromethane, trichloromethane, and 2-ethylhexanol were used as diluents. The tetrahedral and octahedral complexes were formed. Stability constants (β n ) of the complexes as well partition ratios (P n ) of the extracted species were determined. It was shown that both β n and P n increased with an increasing 1-alkyl chain length. Tetrahedral complexes are more readily extractable by organic solvent. Their P n values are the highest. INTRODUCTIONImidazole forms a coordination bond with metal cations by electron pair pyridinic nitrogen atom, forming more stable complexes than it appears from its basicity (1).The presence of alkyl group in position 1 of the imidazole ring slightly increases the basicity of the molecules (2) and their complexing properties by increasing the inductive effect (3). The substitution of the methyl group in position 2, 4, or 5 of the imidazole ring increases the basicity of the pyridinic nitrogen atom (2) by an order of magnitude. At the same time, the subsituent hinders the formation of the 2-methylimidazole complexes with metal ions due to steric hindrance. The steric effect complicates the formation of the octahedral species and simultaneously favours the tetrahedral complexes. The complexes of Co(II), Zn(II), and Cd(II) with derivatives of alkylimidazole having steric effect in the aqueous solution reveal a tendency to change the coordination structure from octahedral to tetrahedral

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“…Until now PIMs containing various ion carriers have been proposed for separation of a variety of metal ions, i.e. noble metals, actinides, lanthanides, and heavy metals, such as zinc, iron, cadmium, copper, nickel, lead, chromium, mercury, cobalt, and manganese . Also, PIMs were applied for the transport of such organic compounds as oxalic, tartaric, lactic or citric acid …”

Section: Introductionmentioning

confidence: 99%

“…noble metals, 4,13,14 actinides, [15][16][17] lanthanides, 17 and heavy metals, such as zinc, iron, cadmium, copper, nickel, lead, chromium, mercury, cobalt, and manganese. [1][2][3][6][7][8][9][10][11][12][18][19][20][21][22][23] Also, PIMs were applied for the transport of such organic compounds as oxalic, tartaric, lactic or citric acid. [24][25][26] Our team described the removal of Zn(II), Fe(II) and Fe(III) from single-metal-ion chloride aqueous solutions with PIMs containing trihexyl(tetradecyl)phosphonium chloride (Cyphos IL 101) or trihexyl(tetradecyl)phosphonium bis (2,4,4trimethylpentyl)phosphinate (Cyphos IL 104) as metal ion carriers [6][7][8] and showed that Cyphos IL 101 is a more effective carrier of Fe(III) than of Zn(II).…”

Section: Introductionmentioning

confidence: 99%

Characterization of polymer inclusion membranes (PIM) containing phosphonium ionic liquids and their application for separation of Zn(II) from Fe(III)

Baczyńska

Słomka

Rzelewska

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Hydrometallurgical separation of Zn(II) from Fe(III) from HCl solutions is an important issue to regenerate spent effluents. Polymer inclusion membranes (PIMs) are an attractive technique for selective separation and concentration of low concentrated target metal ions, as an alternative to liquid–liquid extraction. RESULTS PIMs containing phosphonium ionic liquids trihexyl(tetradecyl)phosphonium chloride (Cyphos IL101) or bis(2,4,4‐trimethylpentyl)phosphinate (Cyphos IL104), as metal ion carriers, o‐nitrophenyloctyl ether (NPOE) as a plasticizer and triacetate cellulose (CTA) as a polymer matrix were prepared and characterized by contact angle measurements, scanning electron microscopy, atomic force microscopy and nanoindentation measurements. An important aspect was to determine the influence of PIMs ageing on their morphology and efficiency of Zn(II) transport. Finally, PIMs were applied for separation of Zn(II) from Fe(III). CONCLUSION The surface of the IL‐containing PIMs was characterized as hydrophilic, rough, without apparent pores. However, phase contrast images indicated that the plasticized membranes were not fully homogeneous. Stability of the PIMs, particularly of those without the plasticizer or without the carrier, is affected by ageing. Finally, a membrane‐based successful separation of Zn(II) from Fe(III) was developed with 1 mol L‐1 HCl as a stripping phase for Fe(III), while the majority of Zn(II) were retained in the feed phase (SFe(III)/Zn(II) = 8.85). © 2017 Society of Chemical Industry

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Selective Transport of Cu(II) across a Polymer Inclusion Membrane with 1-Alkylimidazole from Nitrate Solutions

Cited by 28 publications

References 17 publications

Application of Polymer and Supported Membranes with 1-Decyl-4-Methylimidazole for Pertraction of Transition Metal Ions

Application of Polymer and Supported Membranes with 1-Decyl-4-Methylimidazole for Pertraction of Transition Metal Ions

The Influence of Alkyl Chain Length and Steric Effect on the Stability Constants and Extractability of Co(II) Complexes with 1-Alkyl-2-Methylimidazoles

Characterization of polymer inclusion membranes (PIM) containing phosphonium ionic liquids and their application for separation of Zn(II) from Fe(III)

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