Selective transport and removal of Cd from chloride solutions by polymer inclusion membranes

Pont, Núria; Salvadó, Victòria; Fontàs, Cláudia

doi:10.1016/j.memsci.2008.02.057

Cited by 87 publications

(39 citation statements)

References 32 publications

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“…PIMs have also been used as passive samplers deploying the membrane device for a 7-day period without reporting any drawback due to membrane fouling [3][4][5]. With the proper selection of the carrier, these membranes can effectively transport different species, such as inorganic pollutants [5], organic compounds [6] and metallic species [7].…”

Section: Introductionmentioning

confidence: 99%

The Use of a Polymer Inclusion Membrane for Arsenate Determination in Groundwater

Vera

Anticó

Fontàs

2018

Water

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A polymer inclusion membrane (PIM) containing the ionic liquid methyltrioctylammonium chloride (Aliquat 336) as the carrier has been used satisfactorily for the preconcentration of arsenate present in groundwater samples, allowing its determination by a simple colorimetric method. The optimization of different chemical and physical parameters affecting the membrane performance allowed its applicability to be broadened. The transport of As(V) was not affected by the polymer used to make the PIM (cellulose triacetate (CTA) or poly(vinyl chloride) (PVC)) nor the thickness of the membrane. Moreover, the use of a 2 M NaCl solution as a stripping phase was found to allow the effective transport of arsenate despite the presence of other major anions in groundwater. Using the PIM for the analysis of different groundwaters spiked at 100 µg L −1 resulted in recoveries from 79% to 124% after only 5 h of contact time. Finally, the validated PIM-based method was successfully applied to the analysis of waters containing naturally occurring arsenate.

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Section: Introductionmentioning

confidence: 99%

The Use of a Polymer Inclusion Membrane for Arsenate Determination in Groundwater

Vera

Anticó

Fontàs

2018

Water

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“…Transport studies through cellulose triacetate membranes as polymeric matrix with showing high flux and good stability have been recently reported [22][23][24][25][26][27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Efficient Facilitated Transport of Lead and Cadmium Across a Plasticized Triacetate Membrane Mediated by D2EHPA and TOPO

Arous¹,

Saoud²,

Amara³

et al. 2011

MSA

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Cellulose triacetate membranes doped with organo-phosphoric carriers (2-ethylhexyl) phosphoric acid noted (D2EHPA) or trioctyl phosphine oxide noted (TOPO) as fixed carriers and 2-nitro phenyl octyl ether noted (NPOE) or tris ethylhexyl phosphate noted (TEHP) as a plasticizers have been prepared and applied for investigation to the facilitated transport of Pb(II) and Cd(II) ions from aqueous nitrate source phase. The membranes Polymer -Plasticizer -Carrier were characterised using chemical techniques as well as Fourier Transform Infra -Red (FTIR), X -ray Diffraction and Scanning electron microscopy (SEM).A study of the transport across a polymer inclusion membrane has shown that the lead or cadmium transport efficiency was increased using D2EHPA as carrier at pH 1-2.

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“…Various experimental conditions were investigated and it was concluded that the presence of chloride ions in the feed phase is necessary for the transport of cadmium(II) by this carrier, though there is not any apparent difference when the anion is present as NaCl or HCl. Moreover, the system showed its selectivity against other metal-accompanying (nickel, cooper, paladium), cadmium in solutions from various sources [95] .…”

Section: Some Applicationsmentioning

confidence: 96%

Supported liquid membranes technologies in metals removal from liquid effluents

Agreda¹,

García‐Díaz²,

López³

et al. 2011

REVMETAL

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The generation of liquid effluents containing organic and inorganic residues from industries present a potential hazardousness for environment and human health, being mandatory the elimination of these pollutants from the respective solutions containing them. In order to achieve this goal, several techniques are being used and among them, supported liquid membranes technologies are showing their potential for their application in the removal of metals contained in liquid effluents. Supported liquid membranes are a combination between conventional polymeric membranes and solvent extraction. Several configurations are used: flat-sheet supported liquid membranes, spiral wounds and hollow fiber modules. In order to improve their effectiveness, smart operations have been developed: non-dispersive solvent extraction, non-dispersive solvent extraction with strip phase dispersion and hollow fiber renewal liquid membrane. This paper overviewed some of these supported liquid membranes technologies and their applications to the treatment of metal-bearing liquid effluents. KeywordsSupported liquid membranes; Metals; Extractants; Ionic liquids; liquid effluents; Environment. Tecnologías de membranas líquidas soportadas en la eliminación de metales de efluentes líquidos ResumenLa generación, por parte de las industrias, de efluentes líquidos conteniendo sustancias orgánicas e inorgánicas, es un peligro potencial tanto para los humanos como para el medio ambiente, siendo necesaria la eliminación de estos elementos tóxicos de las disoluciones que los contienen. Para conseguir este fin, se están aplicando diversas técni-cas y entre ellas las tecnologías de membranas líquidas soportadas, están demostrando sus aptitudes para la eliminación de metales contenidos en efluentes líquidos. Las membranas líquidas soportadas, resultan de la unión de las membranas poliméricas y de la tecnología de extracción líquido-líquido. Este tipo de membranas se pueden utilizar en diversas configuraciones: plana, módulo en fibra hueca y módulo en espiral y para aumentar su efectividad se están desarrollando las llamadas operaciones avanzadas: extracción no dispersiva, extracción no dispersiva con dispersión de la fase de reextracción y empleo del módulo de fibra hueca, con renovación de la membrana líquida. En este trabajo se revisan estas operaciones de membranas líquidas soportadas y algunas de las aplicaciones de las mismas, en el tratamiento de efluentes líquidos conteniendo metales. Palabras claveMembranas líquidas soportadas; Metales; Agentes de extracción; Líquidos iónicos; Efluentes líquidos; Medio ambiente.

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Selective transport and removal of Cd from chloride solutions by polymer inclusion membranes

Cited by 87 publications

References 32 publications

The Use of a Polymer Inclusion Membrane for Arsenate Determination in Groundwater

The Use of a Polymer Inclusion Membrane for Arsenate Determination in Groundwater

Efficient Facilitated Transport of Lead and Cadmium Across a Plasticized Triacetate Membrane Mediated by D2EHPA and TOPO

Supported liquid membranes technologies in metals removal from liquid effluents

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