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Open AccessFeature PaperArticle
Membranes 2017, 7(4), 57;

PES-Kaolin Mixed Matrix Membranes for Arsenic Removal from Water

Institute on Membrane Technology, ITM-CNR, Via P. Bucci 17C, 87036 Cosenza, Italy
Materials and Electronic Systems Laboratory (LMSE), University of Bordj Bou Arreridj, El-Anasser 34030, Bordj Bou Arreridj, Algeria
Author to whom correspondence should be addressed.
Received: 11 August 2017 / Revised: 16 September 2017 / Accepted: 26 September 2017 / Published: 30 September 2017
(This article belongs to the Special Issue Seven Years of Membranes: Feature Paper 2017)
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The aim of this work was the fabrication and the characterization of mixed matrix membranes (MMMs) for arsenic (As) removal from water. Membrane separation was combined with an adsorption process by incorporating the kaolin (KT2) Algerian natural clay in polymeric membranes. The effects of casting solution composition was explored using different amounts of polyethersufone (PES) as a polymer, polyvinyl-pyrrolidone (PVP K17) and polyethylene glycol (PEG 200) as pore former agents, N-methyl pyrrolidone (NMP) as a solvent, and kaolin. Membranes were prepared by coupling Non-solvent Induced Phase Separation and Vapour Induced Phase Separation (NIPS and VIPS, respectively). The influence of the exposure time to controlled humid air and temperature was also investigated. The MMMs obtained were characterized in terms of morphology, pore size, porosity, thickness, contact angle and pure water permeability. Adsorption membrane-based tests were carried out in order to assess the applicability of the membranes produced for As removal from contaminated water. Among the investigated kaolin concentrations (ranging from 0 wt % to 5 wt %), a content of 1.25 wt % led to the MMM with the most promising performance. View Full-Text
Keywords: arsenic; kaolin KT2; phase inversion; polyethersulfone; mixed matrix membranes; water treatment arsenic; kaolin KT2; phase inversion; polyethersulfone; mixed matrix membranes; water treatment

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Marino, T.; Russo, F.; Rezzouk, L.; Bouzid, A.; Figoli, A. PES-Kaolin Mixed Matrix Membranes for Arsenic Removal from Water. Membranes 2017, 7, 57.

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