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    Facile synthesis and characterization of Zno-HNT additive for enhancement of polysulfone membrane for Oil-In-Water separation

    Year: 2021

    Journal: Mater. Today-Proc., Volume 46, page 1978–1982

    Authors: Ikhsan, Syarifah Nazirah Wan; Yusof, Norhaniza; Aziz, Farhana; Ismail, Ahmad Fauzi

    Keywords: Nanocomposite; Oily wastewater; Membrane additives; Zinc oxide; Halloysite nanotube

    In this study, a novel nanocomposite of Zinc Oxide-Halloysite Nanotubes (ZnO-HNT) has been synthesized and incorporated into polysulfone membrane for the purpose of oily wastewater separation and purification. ZnO-HNT nanocomposite was synthesized as additives that can improve the hydrophilicity as well as the oleophobicity of the membrane. The nanocomposite was incorporated into PSf membrane in three different loading of ZnO and HNT. The novel nanocomposite has been characterized for its morphological characteristics using SEM, TEM and its physicochemical properties were also analyzed by FTIR and XRD. The performance of the modified polysulfone membrane was studied in terms of hydrophilicity, oil rejection and antifouling properties. The FTIR spectra recorded significant -OH peak at 3200 to 3500 cm-1 which contributes to the improve hydrophilicity of the membrane. XRD analysis shown that there are significant peaks at 2h that attributes to both ZnO and HNT in which the nanocomposite exhibited more intense peak at 56.7 degrees denoting increased amount of hydroxide groups. Additionally, the modified PSf membrane with ZnO-HNT additives has shown improved oil contact angle of 165 degrees, water contact angle of 48.6 degrees and 99% total rejection for oily wastewater indicating the improve performance of PSf through incorporation of ZnO-HNT . (c) 2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the Regional Congress on Membrane Technology 2020 (RCOM 2020) and Regional Conference Environmental Engineering (RCEnvE 2020).
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