Selective removal of silver(<scp>i</scp>) using polymer inclusion membranes containing calixpyrroles

Nowik-Zając, Anna; Zawierucha, Iwona; Kozłowski, Cezary A.

doi:10.1039/c9ra04347k

Cited by 22 publications

(18 citation statements)

References 34 publications

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“…Figure 1 shows that the acidity of the aqueous phase does not significantly affect the rate of Ag(I) transport by PIM containing an ester derivative calix [4]pyrrole. This was contrast with our previous study concerning Ag(I) transport by PIM containing a carboxyl derivative calix [4]pyrrole [28].…”

Section: Modification Of Source Phase Compositioncontrasting

confidence: 99%

“…This was observed for the case of carrier concentration influence, partly due to differences in the density of charge of these metal cations and the varied stoichiometry of the association between the metal cations and the complexes. Nowik-Zajac et al [ 28 ] studied silver transport through PIM with a carboxyl derivative calix[4]pyrrole. The transport described in this study was effective when the pH of the source phase was above 4.0.…”

Section: Introductionmentioning

confidence: 99%

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Selective Transport of Ag(I) through a Polymer Inclusion Membrane Containing a Calix[4]pyrrole Derivative from Nitrate Aqueous Solutions

Nowik-Zając

Zawierucha

Kozłowski

2020

IJMS

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Cellulose-triacetate-based polymer inclusion membranes (PIMs) with different concentrations of a calixpyrrole ester derivative as the membrane carrier were studied to determine their ability to transport Ag(I) from aqueous nitrate solutions. The effects of the concentrations of ion carriers and metal ions, the pH of the source aqueous phase, and stripping agents on the effective transport of Ag(I) were assessed. All studied parameters were found to be important factors for the transport of Ag(I) metal ions. The initial fluxes were determined at different temperatures. The prepared membranes were found to be highly permeable. The selectivity of silver transport from an aqueous solution containing Ag(I), Cu(II), Pb(II), Cd(II), Ni(II), Zn(II), and Co(II) ions was also investigated.

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Section: Modification Of Source Phase Compositioncontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Selective Transport of Ag(I) through a Polymer Inclusion Membrane Containing a Calix[4]pyrrole Derivative from Nitrate Aqueous Solutions

Nowik-Zając

Zawierucha

Kozłowski

2020

IJMS

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“…They have been increasingly used in recent years as an alternative to classic solvent extraction in the recovery of various metal ions from e-waste [ 21 , 22 ]. Because the efficiency of metal recovery processes based on the application of polymer materials depends on the type and properties of the carrier (ion exchanger or compound with complexing properties), intensive research related to the possibility of using various molecules for this purpose [ 17 , 23 ], including commercially available chemicals, such as Cyphos IL 101, Kelex 100, Aliquat 336, and Calix[4]pyrolles [ 24 , 25 , 26 , 27 ], has been conducted. Campos et al [ 28 ] tested Cyphos IL 101 for gold recovery from HCl solutions in liquid/liquid extraction systems and immobilized in a biopolymer composite matrix.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Recovery of Precious and Heavy Metal Ions from Waste Electrical and Electronic Equipment (WEEE) Using Polymer Films Containing Cyphos IL 101

et al. 2021

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In this article, the application of a polymer film containing the ionic liquid Cyphos IL 101 for the simultaneous recovery of precious and heavy metal ions ((Ni(II), Zn(II), Co(II), Cu(II), Sn(II), Pb(II), Ag(I), Pd(II), and Au(III)) from waste electrical and electronic equipment (WEEE) is described. The experiments were performed for solutions containing metal ions released from computer e-waste due to leaching carried out with concentrated nitric(V) acid and aqua regia. It was found that the applied polymer film allows for the efficient recovery of precious metals (98.9% of gold, 79.3% of silver, and 63.6% of palladium). The recovery of non-ferrous metals (Co, Ni, Cu, Zn, Sn, and Pb) was less efficient (25–40%). Moreover, the results of the performed sorption/desorption processes show that the polymer film with Cyphos IL 101 can be successfully used after regeneration to recover metals ions several times.

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“…The solutions obtained as a result of leaching are subjected to separation processes, which may include separation with liquid membranes [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ]. Various carriers are used in membrane processes, e.g., thiourea derivatives [ 26 , 27 ], phosphoric acid derivatives [ 28 , 29 ], calixpyrroles [ 30 , 31 ], crown ethers [ 32 , 33 , 34 , 35 , 36 ] or calixarene [ 37 ]. Currently, polymer membranes are the most popular for membrane processes, which are increasingly used in the separation of various metal ions [ 38 , 39 , 40 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Polymer Inclusion Membranes Doped with Alkylimidazole to Separation of Silver and Zinc Ions from Model Solutions and after Battery Leaching

2020

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New materials, such as polymer inclusion membranes, can be used for water and wastewater treatment. In this paper, the selective transport of silver(I) and zinc(II) ions from nitrate solutions through the polymer inclusion membranes (PIMs), which consist of cellulose triacetate as a polymeric support, o-nitrophenyl pentyl ether as a plasticizer, and either 1-hexylimidazole (1) or 1-hexyl-2-methylimidazole (2) as an ion carrier, is studied. Both Zn(II) and Ag(I) model solutions (CM = 0.001 M, pH = 6.5), as well as the solutions after the leaching of a spent battery with a silver–zinc cell (silver-oxide battery), are tested. The results show that Zn(II) ions are effectively transported through PIMs containing either carrier, whereas Ag(I) is more easily transported through PIMs doped with (1). In the case of the leaching solution after 24 h transport, the recovery coefficients of Ag(I) and Zn(II) for PIMs doped with (1) are 86% and 90%, respectively, and for PIMs doped with (2), 47% and 94%, respectively. The influence of basicity and structure of carrier molecules on transport kinetics is discussed as well. PIMs are characterized by using an atomic force microscopy (AFM) technique.

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Selective removal of silver(i) using polymer inclusion membranes containing calixpyrroles

Abstract: The transport of Ag(i) across polymer inclusion membranes is reported with derivatives of calixpyrroles with methyl (KP1) and carboxyl (KP2) groups as ion carriers, o-nitrophenyl pentyl ether as a plasticizer and cellulose triacetate as support.

Cited by 22 publications

References 34 publications

Selective Transport of Ag(I) through a Polymer Inclusion Membrane Containing a Calix[4]pyrrole Derivative from Nitrate Aqueous Solutions

Selective Transport of Ag(I) through a Polymer Inclusion Membrane Containing a Calix[4]pyrrole Derivative from Nitrate Aqueous Solutions

Simultaneous Recovery of Precious and Heavy Metal Ions from Waste Electrical and Electronic Equipment (WEEE) Using Polymer Films Containing Cyphos IL 101

Application of Polymer Inclusion Membranes Doped with Alkylimidazole to Separation of Silver and Zinc Ions from Model Solutions and after Battery Leaching

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