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Fahime Parvizian

Fahime Parvizian

Academic rank: Associate Professor
ORCID: https://orcid.org/0000-0001-6112-0047
Education: PhD.
ScopusId: 26425215000
Faculty: Engineering
Address: Arak University
Phone:

Research

Title
Oleic acid-functionalized TiO2 nanoparticles for fabrication of PES-based nanofiltration membranes
Type
JournalPaper
Keywords
Nanofiltration membraneTitanium oxide nanoparticlesPolyethersulfoneOleic acid
Year
2020
Journal Chemical Engineering Research and Design
DOI
Researchers Fahime Parvizian ، Fateme Ansari ، Samaneh Bandehali

Abstract

In this study, hybrid nanofiltration (NF) membranes were fabricated by introducing oleic acid-titanium oxide (OA-TiO2) nanoparticles into the polyethersulfone (PES) by phase inversion method. The OA-TiO2 nanoparticles were synthesized and then different concentrations of synthesized nanoparticles were used to prepare NF membranes. The synthesized nanoparticles were characterized by Fourier transform infrared spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM), and X-Ray Diffraction analysis (XRD). Moreover, the morphology of membranes was investigated by FESEM, the energy dispersive X-ray (EDX) analytical method, atomic force microscope (AFM) analysis. The separation performance of membranes was evaluated by the contact angle, pure water flux (PWF), flux recovery ratio (FRR%), and the rejection of Na2SO4 and Cu(NO3)2. The highest PWF (18.206 L/m2h) was obtained to PES-based membrane containing of 0.05 wt.% OA-TiO2 nanoparticles with a 42% increase compared with the pristine PES membrane at operating pressure of 4.5 bar due to increasing membrane hydrophilicity and better dispersion of OA-TiO2 nanoparticles. Furthermore, the best Na2SO4 rejection (81.5%) was obtained to membrane containing of 0.1 wt.% of OA-TiO2 nanoparticles and the highest Cu(NO3)2 removal (79%) was revealed to membranes containing of 0.5 wt.% OA-TiO2 nanoparticles that showed the increase of 21% and 25% compared to the pristine PES, respectively. The enhancement of salt rejection attributed to electrostatic repulsion and adsorption mechanisms. The incorporation of OA-TiO2 nanoparticles into the PES enhance FRR% to 83% that led to improving anti-fouling properties.