Recent trends in extraction and transport of metal ions using polymer inclusion membranes (PIMs)

Almeida, M. Inês G.S.; Cattrall, Robert W.; Kolev, Spas D.

doi:10.1016/j.memsci.2012.06.006

Cited by 311 publications

(175 citation statements)

References 92 publications

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“…The most recent type of physical impregnation, which is also the type most commonly used in metal separation, is called polymer inclusion membrane (PIM) [21]. While SILMs were commonly prepared by immersing IL to the pore of the solid support, PIMs were prepared by casting a solution containing a carrier, a plasticizer and a base polymer such as cellulose triacetate (CTA), poly (vinyl chloride) (PVC) or PVDF to form a thin, lexible and stable ilm.…”

Section: Polymer Inclusion Membranementioning

confidence: 99%

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Supported Ionic Liquid Membranes for Metal Separation

Ola¹,

Matsumoto²

2017

Progress and Developments in Ionic Liquids

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Metals are widely used in various areas of human life, and their existence in the environment at high concentrations has become a cause for concern. Metals can enter the human body and disturb the human metabolic system. Therefore, research to recover metals from their matrix both from industrial wastewater and from ores or scraps containing metals is of great importance. One of the separation techniques proposed to overcome those issues involves using supported ionic liquid membranes (SILMs). This chapter summarizes the recovery of metals using SILM. In SILM, an ionic liquid that acts as an extractant is embedded in small pores of a polymer support. The latest type of physical impregnation of ionic liquid, which is the type most commonly used in metal separation, is called polymer inclusion membrane (PIM). PIMs were prepared by casting a solution containing an ionic liquid, a plasticizer and a base polymer to form a thin, lexible and stable ilm. A PIM including ionic liquids has a similar coniguration to SILM, and it is considered to be a kind of SILM. In this chapter, efects on the stability and selectivity in SILM and PIM for metal separation are reviewed.

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Section: Polymer Inclusion Membranementioning

confidence: 99%

“…Co(II), Ni(II), Cd(II), Cu(II), Cr(VI), Au(III), As(V), Pd(II), Zn(II)) [21,36]. Kebiche-Senhaji et al [28] studied Cr(VI) transport from a mixture containing within a range around neutrality, under the acidic conditions, the extraction reactions of these transition metal ions did not proceed.…”

mentioning

confidence: 99%

Supported Ionic Liquid Membranes for Metal Separation

Ola¹,

Matsumoto²

2017

Progress and Developments in Ionic Liquids

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“…Being a heavy metal, cadmium is highly toxic. Thus, cadmium removal from industrial wastewater is also important in many industries [10]. Cd(II) solution used in the membrane extraction experiments and for calibration purposes were prepared from analytical grade Cd(NO 3 ) 2 .…”

Section: Reagentsmentioning

confidence: 99%

The effect of aging on thermomechanical and metal extraction properties of poly (vinyl chloride)/Aliquat 336 polymer inclusion membranes

Halim

Whitten

Nghiem

2016

Desalination and Water Treatment

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Nghiem, L. D. (2016). The effect of aging on thermomechanical and metal extraction properties of poly (vinyl chloride)/Aliquat 336 polymer inclusion membranes. Desalination and Water Treatment, 57 (7), 3298-3303.The effect of aging on thermomechanical and metal extraction properties of poly (vinyl chloride)/Aliquat 336 polymer inclusion membranes AbstractThe impact of aging PVC/Aliquat 336 polymer inclusion membranes (PIMs) on their thermomechanical properties and heavy metal extraction performance was investigated. The results show that freshly prepared PIMs contain residual tetrahydrofuran (THF) which was used as the solvent for membrane manufacture. Removal of some residual THF by membrane aging resulted in notable changes in the thermomechanical properties of the PIMs. By aging the membrane for 1 week at 40°C, the glass transition increased from 42 to 55°C. In addition, while the melting temperature (Tm) of the Aliquat 336 component could not be determined for freshly prepared PIMs, the aged membrane showed a clear Tm value of −19°C. Metal extraction capacity was not affected by membrane aging. AbstractThe impact of aging PVC/Aliquat 336 polymer inclusion membranes (PIMs) on their thermomechanical properties and heavy metal extraction performance was investigated. The results show that freshly prepared PIMs contains residual tetrahydrofuran (THF) which was used as the solvent for membrane manufacture. Removal of some residual THF by membrane aging resulted in notable changes in the thermomechanical properties of the PIMs. By ageing the membrane for 1 week at 40 °C the glass transition increased from 42 to 55 °C. In addition, while the melting temperature (T m ) of the Aliquat 336 component could not be determined for freshly prepared PIMs, the aged membrane showed a clear T m value of -19 °C. Metal extraction capacity was not affected by membrane aging.

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“…Moreover, ILs can be used as extractants in the preparation of polymer inclusion membranes (PIMs). PIMs basically consist of a polymeric matrix, normally made of cellulose triacetate (CTA) or poly(vinyl chloride) (PVC) [10,11] and an extractant (named carrier), which is responsible for transport across the membrane. Usually the addition of a plasticizer or some modifiers is needed to obtain adequate elastic characteristics of the membranes [12].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Characterization of a Polymer Inclusion Membrane Made of Cellulose Triacetate and Aliquat 336 and Its Application to Sulfonamides Separation

et al. 2018

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An electrochemical characterization of a polymer inclusion membrane (PIM) fabricated with the ionic liquid (IL) Aliquat 336 (26%) and the polymer cellulose triacetate (CTA) (76%) is presented. Considering the use of PIMs in separation systems to remove pollutants from water, the characterization was performed with NaCl solutions by measuring membrane potential, electrochemical impedance spectroscopy, and salt diffusion and results were compared with those obtained from dry membranes. Results showed a significant reduction in the membrane diffusive permeability and electrical conductivity as well as the transport number of cation Na + across the PIM when compared with solution values, which could be mainly related to the dense character of the membrane. Membrane application in the separation of different sulfonamides (sulfathiazole, sulfapyridine, sulfamethazine, and sulfamethoxazole) from water, with 1 M NaCl solution as striping phase, was also considered. These results indicated that the different chemical characteristics of the compounds, as well as the compact structure of the PIM, limited the transport of the organic molecules though it.

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Recent trends in extraction and transport of metal ions using polymer inclusion membranes (PIMs)

Cited by 311 publications

References 92 publications

Supported Ionic Liquid Membranes for Metal Separation

Supported Ionic Liquid Membranes for Metal Separation

The effect of aging on thermomechanical and metal extraction properties of poly (vinyl chloride)/Aliquat 336 polymer inclusion membranes

Electrochemical Characterization of a Polymer Inclusion Membrane Made of Cellulose Triacetate and Aliquat 336 and Its Application to Sulfonamides Separation

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