Determination of the Percolation Threshold for the Oxalic, Tartaric, and Lactic Acids Transport through Polymer Inclusion Membranes with 1-Alkylimidazoles as a Carrier

Przewoźna, Marta; Gajewski, Piotr; Michalak, Natalia; Bogacki, Mariusz B.; Skrzypczak, Andrzej

doi:10.1080/01496395.2014.906464

Cited by 15 publications

(10 citation statements)

References 34 publications

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“…She demonstrated that an increase in the carrier concentration results in an increase in the polymer membrane viscosity, and this forms an additional barrier in a diffusion mass transport through the PIM. Similar observations were made by Przewoźna et al [18], who found that too high amount of the carrier could result in its secretion on the membrane surface, also forming an additional barrier to the mass transport through PIM.…”

Section: Introductionsupporting

confidence: 86%

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Characterization of PVC-based polymer inclusion membranes with phosphonium ionic liquids

Witt

Radzyminska-Lenarcik

2019

J Therm Anal Calorim

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Membrane techniques can be used to separate different compounds, i.e., toxic metal ions from waste waters. As any other method of separation, also this one, based on polymer inclusion membranes (PIMs), has certain limitations. One of them is the stability of membranes. In the present paper, the dependence of the physical and chemical properties on composition of PVC-based polymer inclusion membranes doped with phosphonium ionic liquids (CYPHOS IL 101, CYPHOS IL 104, CYPHOS IL 105 and CYPHOS IL 109) was studied. The thermal stability of investigated membranes was examined by thermogravimetry together with differential thermogravimetry analysis. Obtained results showed that studied PIMs are stable to the temperature of about 170 °C. The membrane morphology was examined by attenuated total reflectance Fourier-transform infrared (ATR-FTIR) spectroscopy, as well as scanning electron microscopy (SEM). The visibility of all characteristic bands in the ATR-FTIR spectra confirmed the presence of individual components in the membranes: a polymer, a plasticizer and the carriers. It also suggested that there were no signs of the covalent bond formation between the polymer, the plasticizer and the carrier. Only van der Waals or hydrogen bonds could be present. Moreover, in the SEM images of the investigated PIMs a rough surface without pores was observed.

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Section: Introductionsupporting

confidence: 86%

“…In recent years, the phosphonium ionic liquids have attracted a significant interest of researchers studying solvent extraction [11][12][13][14] and membrane techniques [15][16][17][18], due to their properties.…”

Section: Introductionmentioning

confidence: 99%

Characterization of PVC-based polymer inclusion membranes with phosphonium ionic liquids

Witt

Radzyminska-Lenarcik

2019

J Therm Anal Calorim

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“…Alkyl derivatives of imidazoles, entering the hydration sphere of ions—such as copper(II), nickel(II), or cobalt(II)—create complexes with the general form of MCl 2 L 2 , where L is an organic ligand [ 51 , 52 ]. Because of these properties, azoles, imidazoles [ 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 ], and triazoles [ 59 , 60 ] in particular, are used as extractants or carriers of ions for selective extraction and separation of not only transition group metals but also organic acids [ 61 , 62 , 63 ].…”

Section: Introductionmentioning

confidence: 99%

Facilitated Transport of Copper(II) across Polymer Inclusion Membrane with Triazole Derivatives as Carrier

et al. 2020

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This study investigates copper(II) ion transport through a polymer inclusion membrane (PIM) containing 1-alkyl-1,2,4-triazole (n = 8, 9, 10, 11, 12, 14), o-nitrophenyl octyl ether as the plasticizer and cellulose triacetate as the polymer matrix. The feeding phase was a solution of 0.1 mol/dm3CuCl2 and an equimolar (0.1 mol/dm3) mixture of copper, nickel, and cobalt chlorides with varying concentrations of chloride anions (from 0.5 to 5.0 mol/dm3) established with NaCl. The receiving phase was demineralized water. The flow rate of the source and receiving phases through the membrane module was within the range from 0.5 cm3/min to 4.5 cm3/min. The tests were carried out at temperatures of 20, 30, 40 and 50 °C. Transport of NaCl through the membrane was excluded for the duration of the test. It was noted that the flow rate through the membrane changes depending on the length of the carbon chain in the alkyl substituent from 16.1 μmol/(m2s) to 1.59 μmol/(m2s) in the following order: C8> C9> C10> C11> C12> C14. The activation energy was 71.3 ± 3.0 kJ/mol, indicating ion transport through the PIM controlled with a chemical reaction. Results for transport in case of the concurrent separation of copper(II), nickel(II), and cobalt(II) indicate a possibility to separate them in a selective manner.

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“…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%

“…[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). Kogelnig et al 9 reported that Zn(II) was efficiently extracted from 5 mol L -1 HCl using PIMs based on PVC matrix and Cyphos IL 101 as a carrier.…”

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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Determination of the Percolation Threshold for the Oxalic, Tartaric, and Lactic Acids Transport through Polymer Inclusion Membranes with 1-Alkylimidazoles as a Carrier

Cited by 15 publications

References 34 publications

Characterization of PVC-based polymer inclusion membranes with phosphonium ionic liquids

Characterization of PVC-based polymer inclusion membranes with phosphonium ionic liquids

Facilitated Transport of Copper(II) across Polymer Inclusion Membrane with Triazole Derivatives as Carrier

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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