Browsing by Subject "Separation"

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    La Audiencia Provincial de Granada y los expedientes de divorcio y separación de personas y bienes de 1933.
    (Universidad de Murcia, Servicio de Publicaciones., 2024) Morales Payán, Miguel Ángel
    El objeto del presente estudio es el de analizar los expedientes que se custodian en el Archivo de la Real Chancillería de Granada relativos a las causas de divorcio y separación de bienes sin ruptura del vínculo matrimonial que se siguieron por la Audiencia Provincial de esa ciudad en el año de 1933.
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    Polymeric Inclusion Membranes Based on Ionic Liquids for Selective Separation of Metal Ions
    (MDPI, 2023) Hernández-Fernández, Adrián; Iniesta-López, Eduardo; Ginestá-Anzola, Anahí; Garrido, Yolanda; Pérez de los Ríos, Antonia; Quesada-Medina, Joaquín; Hernández-Fernández, Francisco José; Ingeniería Química
    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+][PF6-] 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+][PF6-]/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.