Preparation and characterization of very thin polymer inclusion membranes (PIMs) and their application to the transport of thiocyanate

Wu, Nan; Almeida, M. Inês G.S.; Simeonova, Silviya; Spassov, Тony; Rangelov, Antoan; Cattrall, Robert W.; Datcheva, Maria; Kolev, Spas D.

doi:10.1016/j.memsci.2022.121249

Cited by 8 publications

(2 citation statements)

References 27 publications

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“…Polymer inclusion membranes (PIMs) are prepared using solvent casting method. In fact, an extractant, [1] a plasticizer and a base polymer, [2] such as polyvinyl chloride (PVC) [3] or cellulose triacetate (CTA) [4] are dissolved in an appropriate solvent, which is allowed to evaporate slowly [5] to obtain thin, flexible and stable films [6] . In recent years, PIMs have attracted more and more attention, which is reflected in an exponential increase in the number of researches research papers published [7,8] .…”

Section: Introductionmentioning

confidence: 99%

Effect of Plasticizer Type on Polymer Inclusion Membranes Properties and Performance for Zinc Separation

Mahmoud,

Othmen,

Ncib

et al. 2024

ChemistrySelect

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The goal of the present study is to evaluate the effect of plasticizer in PIMs properties and performance for zinc separation. Membranes were prepared by casting a solution containing poly (vinyl chloride) (PVC) as base polymer, di (2‐ethylhexyl) phosphoric acid (D2EHPA) as carrier, and 2‐nitrophenyl octyl ether (NPOE) or tris (2‐butoxyethyl) phosphate (TBEP) as plasticizers. The newly developed PIMs transported practically all ZnII ions from a feed phase at pH 5 to a 1 M H2SO4 stripping phase. The results showed that the transport flux and its efficiency depend on the chemical nature of the plasticizer. It can be perceived that NPOE (with dielectric constant of 23.1) produced the highest transport flux of zinc (J0=1.62±0.05 10−5 mol m−2 s−1). The single ion transport of zinc was significantly higher than the binary and ternary mixtures. In ternary solution, the transport efficiency for metal ions was in the order of ZnII>CuII>NiII. The transport efficiency of the PVC/NPOE/D2EHPA membrane remained constant until the seventh use. The findings of this work will allow the invention of advanced separation technology ensuring the sustainability of metal resources.

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Section: Introductionmentioning

confidence: 99%

Effect of Plasticizer Type on Polymer Inclusion Membranes Properties and Performance for Zinc Separation

Mahmoud,

Othmen,

Ncib

et al. 2024

ChemistrySelect

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show abstract

“…The base polymer imparts mechanical strength to the PIM, while the plasticizer confers elasticity and flexibility. [13,14] Compared to SLMs combined by surface tension or weak capillary force, PIM exhibits exceptional stability in long-term applications and is considered a sustainable and eco-friendly substitute for traditional solvent extraction and SLMs. [8] However, compared to the solvent extraction method, PIM allows for simultaneous extraction and back-extraction processes, significantly reducing metal recovery time and saving a substantial amount of carriers.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in the Selective Transport and Recovery of Metal Ions using Polymer Inclusion Membranes

Wang,

2023

Adv Materials Technologies

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Polymer inclusion membranes (PIMs) have gained significant attention in the field of metal separation and recovery due to their high selectivity, long service life, high stability, flexible design and low cost. Over the past 10 years, interest around PIMs has increased considerably; hence, the number of research papers has grown exponentially. This review provides the preparation methods and composition of PIMs, presents an overview of studies on PIMs reported since 2012, and discusses the relationship between the physicochemical properties of different types of membrane components and the microstructure, selectivity, transport performance and stability of prepared PIMs. This review also elucidates the metal transport mechanism at the interface and interior of PIMs and summarizes the modification and separation intensification methods of PIMs. Additionally, the structure and stability of PIM relative to other liquid membranes are also discussed. Finally, the existing challenges and perspectives of PIMs in the field of metal separation and recovery are proposed and highlighted. Notably, the need for highly selective and low‐cost carriers, a deeper understanding of membrane microstructure and separation mechanisms, and strategies for promoting widespread adoption of polymer inclusion membrane‐electrodialysis technology deserve particular consideration, which are of guiding significance for accelerating the industrialization process of PIMs.

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Ionic liquid-based polymer inclusion membranes for metal ions extraction and recovery: Fundamentals, considerations, and prospects

Zhao,

Samadi,

Wang

et al. 2024

Chemical Engineering Journal

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Preparation and characterization of very thin polymer inclusion membranes (PIMs) and their application to the transport of thiocyanate

Cited by 8 publications

References 27 publications

Effect of Plasticizer Type on Polymer Inclusion Membranes Properties and Performance for Zinc Separation

Effect of Plasticizer Type on Polymer Inclusion Membranes Properties and Performance for Zinc Separation

Recent Advances in the Selective Transport and Recovery of Metal Ions using Polymer Inclusion Membranes

Ionic liquid-based polymer inclusion membranes for metal ions extraction and recovery: Fundamentals, considerations, and prospects

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