National Polytechnic School of Algiers (ENP), 10 Hassen Badi, PO Box 182, El Harrach, 16200 Algiers, Algeria; Unité de Développement des Equipements Solaires, UDES, Centre de Développement des Energies Renouvelables, CDER, 42415, Tipaza, Algeria.
USTHB, Laboratory of Hydrometallurgy and Inorganic Molecular Chemistry, Faculty of Chemistry, PO Box 32 El Alia, 16111 Algiers, Algeria.
J Hazard Mater. 2017 Aug 15;336:188-194. doi: 10.1016/j.jhazmat.2017.04.035. Epub 2017 Apr 15.
Polymer inclusion membranes (PIM) used for selective transport and separation of metallic ions have emerged in recent times. Their expansion depends on the method of preparation and their suitable structure and physico-chemical characteristics. In this paper, a novel category of membranes for ions separation is reported. The membranes were synthesized by thermally induced phase separation using a mixture of polyvinylidene fluoride (PVDF) and cellulose triacetate (CTA) plasticized by tris(2-ethylhexyl) phosphate (TEHP) and with di-(2-ethylhexyl) phosphoric acid (D2EHPA) incorporated into the polymer as carrier to increase specific interactions between polymers. PIM membrane exhibited a hydrophobic (∼100°) and thermally stable up to ∼200°C porous homogenous structure. The transport of Ni(II), Zn(II) and Pb(II) from aqueous solutions was studied by competitive transport across polymer inclusion membranes (PIM). Competitive transport of ions in solution across PIM provide the selectivity order: Ni (45%)>Pb (35%)>Zn (5%). A long-term transport experiment was carried out to study the durability of the system.
近年来，用于金属离子选择性传输和分离的聚合物包容膜（PIM）应运而生。其发展取决于制备方法以及其合适的结构和物理化学特性。本文报道了一种新型的离子分离膜。该膜是通过热致相分离法用聚偏氟乙烯（PVDF）和三（2-乙基己基）磷酸酯（TEHP）增塑的纤维素三乙酸酯（CTA）的混合物合成的，并将二（2-乙基己基）磷酸（D2EHPA）掺入聚合物中作为载体，以增加聚合物之间的特定相互作用。PIM 膜表现出疏水性（约 100°）和热稳定性，高达约 200°C 的多孔均相结构。通过聚合物包容膜（PIM）跨膜的竞争传输研究了从水溶液中传输 Ni(II)、Zn(II)和 Pb(II)。溶液中离子的竞争跨膜传输提供了选择性顺序：Ni（45%）>Pb（35%）>Zn（5%）。进行了长期传输实验以研究系统的耐用性。
