May 18, 2024
Habib Etemadi

Habib Etemadi

Academic rank: Associate professor
Address: Bonab-University of Bonab
Education: Ph.D in Chemical Engineering
Phone: 04137745000
Faculty: Faculty of Engineering
Department: Polymer Engineering

Research

Title
Investigation of alumina nanoparticles role on the critical flux and performance of polyvinyl chloride membrane in a submerged membrane system for the removal of humic acid
Type Article
Keywords
Polyvinyl chloride membrane · Alumina nanoparticles · Submerged membrane system · Critical fux · Antifouling
Researchers Habib Etemadi، Hamidreza Qazvini

Abstract

In this work, the polyvinyl chloride/alumina (PVC/Al2O3) ultrafltration (UF) nanocomposite membranes were prepared with diferent amounts of Al2O3 within a range of 0–2 wt.%. Neat PVC and optimum nanocomposite membranes were evaluated in a submerged membrane system for the removal of humic acid (HA). The Fourier transform infrared (FTIR) spectroscopy confrmed the presence of hydroxyl group (OH) on the surface of the PVC nanocomposite membrane. Results revealed that the nanocomposite membrane with 1.5 wt.% of Al2O3 nanoparticles has the highest value in porosity and hydrophilicity when compared to other samples. The results obtained from the feld emission scanning electron microscopy (FE-SEM) images showed that as Al2O3 was added to the membrane structure, more pores and larger pores were formed on the membrane surface. A higher critical fux was obtained by the PVC/Al2O3 (1.5 wt.%) nanocomposite membrane due to change in the surface characteristics. Antifouling analysis under subcritical conditions for neat PVC membrane showed that the main portion of the total fouling ratio was irreversible fouling ratio (IFR), while the nanocomposite membrane with 1.5 wt.% of Al2O3 nanoparticles signifcantly decreased IFR. Finally, the nanocomposite membrane had a higher HA rejection than the neat PVC membrane.