Membranes based on polymer miscibility for selective transport and separation of metallic ions

Zioui, Djamila; Arous, Omar; Mameri, N.; Kerdjoudj, Halima; Sebastián, María San; Vilas, José Luis; Nunes-Pereira, J.; Lanceros‐Méndez, S.

doi:10.1016/j.jhazmat.2017.04.035

Cited by 43 publications

(14 citation statements)

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“…Several techniques have been developed to treat wastewater containing heavy metal ions,− including sorption,− precipitation, ion exchange, membrane separation, and electrochemical treatment . Among these methods, sorption is generally recognized as the most popular method because of its simplicity, high efficiency, low cost, and wide adaptability .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Layered Double Hydroxide/Silica Foam Nanocomposites and Their Application for Removing Pb(II) and Cr(VI) from Aqueous Solutions

et al. 2019

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In the current work, nanocomposites of Mg−Al and Mg−Fe layered double hydroxides (LDHs) anchored on silica foam (SF), denoted as MAL/SF and MFL/SF, respectively, were fabricated using a two‐step route. The obtained LDHs/SF nanocomposites were characterized by XRD, TEM, SEM, EDS, elemental mapping, and N2 adsorption‐desorption techniques. Sorption of the heavy‐metal Pb(II) and Cr(VI) on the LDHs/SF was determined at 25 °C and pH 5.5 using a batch technique. In comparison with bulk Mg−Al and Mg−Fe LDHs, the LDHs in the MAL/SF and MFL/SF exhibit significantly enhanced sorption capacities. In addition, the LDHs/SF nanocomposites show a good recyclability for removing heavy metals. The construction of LDHs/SF nanocomposites is an effective strategy for improving the sorption capacity of LDHs, and the nanocomposites are potential sorbents for wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Layered Double Hydroxide/Silica Foam Nanocomposites and Their Application for Removing Pb(II) and Cr(VI) from Aqueous Solutions

et al. 2019

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“…Polymer inclusion membranes were prepared using a new method according to our previous study . 0.25 g of PVDF and 0.25 g of CTA were separately dissolved in 20 mL of DMF at 60 °C and 20 mL of CHCl 3 , respectively, and stirred for 4 h. Homogeneous polymeric solutions were then mixed together and maintained for 1 h under vigorous stirring.…”

Section: Methodsmentioning

confidence: 99%

“…Polymer blending is a convenient approach to elaborate high‐performance materials with enhanced physicochemical and mechanical properties which can be used to the preparation of new category of organic membranes. Thus, it has been considered as an essential field of research for several decades …”

Section: Introductionmentioning

confidence: 99%

Efficient Transport of Heavy Metals Across Plasticized CTA/PVDF Membranes Mediated by Organo‐Phosphorous Carrier

Abdellaoui

Arous

2019

Macromolecular Symposia

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This paper reports on the synthesis of a novel class of polymer inclusion membranes prepared by thermally‐induced phase separation using a mixture of two polymers: polyvinylidene fluoride (PVDF) and cellulose triacetate (CTA) plasticized by dioctylphtalate (DOP) and doped with organo–phosphoric compound: trioctylphosphine oxide noted (TOPO) as mobile carrier. The membranes (polymers − plasticizer − carrier) are characterized using physical techniques as well as Fourier transform infrared (FTIR) and thermo‐gravimetric analysis (TGA). All synthesized polymeric membranes are applied for investigation to the facilitated transport of Pb2+ and Cd2+ ions from aqueous nitrate source phase. All membranes are thermally stable up to nearly 178 °C. A study of the transport across a polymer inclusion membrane has shown that the lead transport efficiency is increased using TOPO as carrier. This study represents an interesting approach in the treatment of hydrometallurgical solutions using the TOPO neutral carrier mediated transport.

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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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Membranes based on polymer miscibility for selective transport and separation of metallic ions

Cited by 43 publications

References 50 publications

Fabrication of Layered Double Hydroxide/Silica Foam Nanocomposites and Their Application for Removing Pb(II) and Cr(VI) from Aqueous Solutions

Fabrication of Layered Double Hydroxide/Silica Foam Nanocomposites and Their Application for Removing Pb(II) and Cr(VI) from Aqueous Solutions

Efficient Transport of Heavy Metals Across Plasticized CTA/PVDF Membranes Mediated by Organo‐Phosphorous 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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