Investigation and separation of high performance oil/water emulsion with a novel nanocomposite membrane

Document Type : Research Article

Authors
E. Nikzad 1
Mina Hosseini 1
M. Ghaedi 2
M. H. Ahmadi 3
F. Marahel 4
1 Omidiyeh Branch, Islamic Azad University
2 bChemistry Department, Yasouj University, Yasouj
3 دانشگاه یاسوج
4 Department of Chemistry, Omidiyeh Branch, Islamic Azad University, Omidiyeh
amnc.2022.10.40.5
Abstract
Graphene oxide is considered as a new type of membrane material. However, it suffers from a low steady-state filtration flux as well as unstable performance, which limits its practical applications. For this reason, the aim of this study was to combine GO with layered double hydroxides (LDH), with bilayer hydrophilic transport channels and positively charged surface in different weight ratios (i.e. 5:1, 3:1, 1:1, 1:3, and 1:5) is The optimized GO-Mg/Al/Zn-LDH was then combined with chitosan (CS) and coated on stainless steel mesh (mesh) to obtain a membrane with high stable flux that is hydrophilic and superoleophobic under water. The layer-by-layer (LBL) hybrid network morphology was fully characterized and investigated for the removal of heavy crude oil from water surfaces, with a separation efficiency higher than 99.5% (ɳ%) and a water flux of Lm-2.h-1 It showed 160222 ± 102 under the force of gravity. In addition, the exceptional mechanical/chemical stability, effective separation, high water flux, reusability and excellent superhydrophilicity, LBL hybrid mesh can be considered as a promising renewable membrane for the treatment of oily water (water containing oil droplets).
Keywords
Wettability
oil/water mixture separation
graphene composites
Subjects
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