Preparation and modification of polyethersulphone MF/UF membrane by TiO₂ nanoparticles for pre-treatment of Pink water
2020
Norouzi, Mahdi | Sharifnezhad, Hossein | Hosseini, Seyed Ghorban
In this research, a continues system for pre-treatment of Pink water has been evaluated using Micro/Ultra structure membranes. Polyethersulphone (PES) Micro/Ultra Filtration (MF/UF) membranes were prepared by phase inversion method with and without nano-sized TiO₂ particles. Three sets of neat membranes (without TiO₂ particles) with different polymer concentrations, and two sets of modified (TiO₂-embedded and UV-irradiated TiO₂-coated) membranes have been prepared and evaluated for Pink water treatment. The membranes have been characterised by cross-flow filtration, SEM, EDS, contact angle and porosity measurements. Result shown that the composition of 16 wt% PES in neat membranes is an acceptable concentration for Pink water treatment. The results of the membrane modification with TiO₂ particles showed that this would significantly increase water flux permeation and make modest changes for TNT rejection for pink water treatment. Moreover, result shown that the permeation flux of 2 wt% TiO₂-embedded membrane is lower in comparison to 0.03 wt% TiO₂-coated membrane. However, the TiO₂-embedded membrane has been shown to have higher TNT rejection compared to the TiO₂-coated membranes. Finally, a comparison between membranes proved that PES MF/UF membranes could successfully use as proper pre-treatment for Pink water treatment with the permeation flux 145–193 L.m⁻².h⁻¹and the rejection 20–30%.
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