Membranes based on polymer miscibility for selective transport and separation of metallic ions

Djamila Zioui; Omar Arous; Nabil Mameri; Hacène Kerdjoudj; M San Sebastian; J L Vilas; J Nunes-Pereira; Senentxu Lanceros-Méndez

doi:10.1016/j.jhazmat.2017.04.035

Membranes based on polymer miscibility for selective transport and separation of metallic ions

J Hazard Mater. 2017 Aug 15:336:188-194. doi: 10.1016/j.jhazmat.2017.04.035. Epub 2017 Apr 15.

Authors

Djamila Zioui¹, Omar Arous², Nabil Mameri³, Hacène Kerdjoudj², M San Sebastian⁴, J L Vilas⁵, J Nunes-Pereira⁶, Senentxu Lanceros-Méndez⁷

Affiliations

¹ 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.
² USTHB, Laboratory of Hydrometallurgy and Inorganic Molecular Chemistry, Faculty of Chemistry, PO Box 32 El Alia, 16111 Algiers, Algeria.
³ National Polytechnic School of Algiers (ENP), 10 Hassen Badi, PO Box 182, El Harrach, 16200 Algiers, Algeria.
⁴ BCMaterials, Parque Científico y Tecnológico de Bizkaia, 48160, Derio, Spain.
⁵ Laboratorio de Química Macromolecular (LABQUIMAC), Departamento de Química Física, Facultad de Ciencia Y Tecnología, Universidad del País Vasco/EHU, Apdo. 644, Bilbao, Spain.
⁶ Centro de Física, Universidade do Minho, 4710-057 Braga, Portugal; IB-S - Institute of Science and Innovation for Bio-Sustainability, University of Minho, 4710-057, Braga, Portugal. Electronic address: jpereira@fisica.uminho.pt.
⁷ BCMaterials, Parque Científico y Tecnológico de Bizkaia, 48160, Derio, Spain; Centro de Física, Universidade do Minho, 4710-057 Braga, Portugal; IB-S - Institute of Science and Innovation for Bio-Sustainability, University of Minho, 4710-057, Braga, Portugal; IKERBASQUE, Basque Foundation for Science 48013 Bilbao, Spain. Electronic address: senentxu.lanceros@bcmaterials.net.

PMID: 28494306
DOI: 10.1016/j.jhazmat.2017.04.035

Abstract

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: Ni²⁺ (45%)>Pb²⁺ (35%)>Zn²⁺ (5%). A long-term transport experiment was carried out to study the durability of the system.

Keywords: Carrier; Heavy metals; Membrane; Plasticizer; Polymers.