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基于离子液体的聚合物包容膜用于金属离子的选择性分离

Polymeric Inclusion Membranes Based on Ionic Liquids for Selective Separation of Metal Ions.

作者信息

Hernández-Fernández Adrián, Iniesta-López Eduardo, Ginestá-Anzola Anahí, Garrido Yolanda, Pérez de Los Ríos Antonia, Quesada-Medina Joaquín, Hernández-Fernández Francisco José

机构信息

Department of Chemical Engineering, Faculty of Chemistry, University of Murcia (UMU), P.O. Box 4021, Campus de Espinardo, E-30100 Murcia, Spain.

Technological Center for Energy and Environment, E-30353 Cartagena, Spain.

出版信息

Membranes (Basel). 2023 Sep 13;13(9):795. doi: 10.3390/membranes13090795.

DOI:10.3390/membranes13090795
PMID:37755217
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10535514/
Abstract

In this work, poly(vinyl chloride)-based polymeric ionic liquid inclusion membranes were used in the selective separation of Fe(III), Zn(II), Cd(II), and Cu(II) from hydrochloride aqueous solutions. The ionic liquids under study were 1-octyl-3-methylimidazolium hexafluorophosphate, [omim][PF] and methyl trioctyl ammonium chloride, [MTOA][Cl]. For this purpose, stability studies of different IL/base polymer compositions against aqueous phases were carried out. Among all polymer inclusion membranes studied, [omim][PF]/PVC membranes at a ratio of 30/70 and [MTOA][Cl]/PVC membranes at a ratio of 70/30 were able to retain up to 82% and 48% of the weight of the initial ionic liquid, respectively, after being exposed to a solution of metal ions in 1 M HCl for 2048 h (85 days). It was found that polymer inclusion membranes based on the ionic liquid methyl trioctyl ammonium chloride allowed the selective separation of Zn(II)/Cu(II) and Zn(II)/Fe(III) mixtures with separation factors of 1996, 606 and, to a lesser extent but also satisfactorily, Cd(II)/Cu(II) mixtures, with a separation factor of 112. Therefore, selecting the appropriate ionic liquid/base polymer mixture makes it possible to create polymeric inclusion membranes capable of selectively separating target metal ions.

摘要

在这项工作中，基于聚氯乙烯的聚合离子液体包合物膜被用于从盐酸水溶液中选择性分离铁（III）、锌（II）、镉（II）和铜（II）。所研究的离子液体为1-辛基-3-甲基咪唑六氟磷酸盐（[omim][PF₆]）和甲基三辛基氯化铵（[MTOA][Cl]）。为此，进行了不同离子液体/基础聚合物组合物对水相的稳定性研究。在所研究的所有聚合物包合物膜中，比例为30/70的[omim][PF₆]/聚氯乙烯膜和比例为70/30的[MTOA][Cl]/聚氯乙烯膜在暴露于1 M盐酸中的金属离子溶液2048小时（85天）后，分别能够保留高达初始离子液体重量的82%和48%。发现基于离子液体甲基三辛基氯化铵的聚合物包合物膜能够选择性分离锌（II）/铜（II）和锌（II）/铁（III）混合物，分离因子分别为1996、606，对于镉（II）/铜（II）混合物，分离因子为112，分离效果稍差但也令人满意。因此，选择合适的离子液体/基础聚合物混合物能够制备出能够选择性分离目标金属离子的聚合物包合物膜。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/5e1a2d913522/membranes-13-00795-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/e0abf6b74bde/membranes-13-00795-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/31b91967f43a/membranes-13-00795-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/0eeb67b2133e/membranes-13-00795-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/4d3337a3735f/membranes-13-00795-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/bf4b7db90f8a/membranes-13-00795-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/618b63337ee8/membranes-13-00795-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/7b2368bb0776/membranes-13-00795-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/5e1a2d913522/membranes-13-00795-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/e0abf6b74bde/membranes-13-00795-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/31b91967f43a/membranes-13-00795-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/0eeb67b2133e/membranes-13-00795-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/4d3337a3735f/membranes-13-00795-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/bf4b7db90f8a/membranes-13-00795-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/618b63337ee8/membranes-13-00795-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/7b2368bb0776/membranes-13-00795-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1dc1/10535514/5e1a2d913522/membranes-13-00795-g008.jpg

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Adv Colloid Interface Sci. 2023-9

[2]
Circular economy in hot-dip galvanizing with zinc and iron recovery from spent pickling acids.

RSC Adv. 2023-2-23

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Application of Phosphonium Ionic Liquids as Ion Carriers in Polymer Inclusion Membranes (PIMs) for Separation of Cadmium(II) and Copper(II) from Aqueous Solutions.

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