Polysulfone nanocomposite membrane embedded by silanized nanodiamond for removal of humic acid from water

Journal of Water and Environmental Nanotechnology

ARTICLE

Tizchang, Atefeh¹  Jafarzadeh, Yoones¹  Yegani, Reza¹  Shokri, Elham³ 

[1] Faculty of Chemical Engineering, Sahand University of Technology;Membrane Technology Research Center, Sahand University of Technology;Department of Chemical Engineering, University of Bonab

关键词: Polysulfone;    Functionalization;    Nanodiamond;    Fouling;    Nanocomposite;   

DOI  :  10.22090/jwent.2019.03.004

学科分类：数学（综合）

来源: Iranian Environmental Mutagen Society

【 摘 要 】

In this study, polysulfone (PSf) nanocomposite membranes embedded with functionalized nanodiamond (ND) were prepared via Non-Solvent Induced Phase Separation (NIPS) method. ND nanoparticles were silanized by using the esterification reaction of hydrolyzed vinyltrimethoxysilane (VTS) in alcoholic solution in order to enhance the compatibility between ND and PSf. Fourier Transform Infrared Spectroscopy (FTIR) analysis revealed that ND nanoparticles were successfully functionalized by silane groups. Nanocomposite membranes were then prepared with different percentages of silanized NDs (SNDs). The membranes were characterized using a set of analyses and the results showed that the addition of SNDs up to 1.0 wt.% resulted in an increase in hydrophilicity, water content, porosity and water flux of membranes. Moreover, Scanning Electron Microscopy (SEM) images indicated that the membrane with 1.0 wt. % nanoparticles had more pores on the membrane surface with smaller average pore size in comparison to other membranes. Antifouling properties of the membrane was also investigated in filtration of humic acid solution and the results showed that reversible fouling and flux recovery of membranes increased at the presence of SNDs.

【 授权许可】

CC BY