Preparation of novel polysulfone-Fe3O4/GO mixed-matrix membrane for humic acid rejection

P. V. Chai, E. Mahmoudi, Teow Yeit Haan, Abdul Wahab Mohammad

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

In this study, novel polysulfone-Fe3O4/GO mixed-matrix membrane was prepared by embedding the iron-decorated graphene oxide (Fe3O4/GO) into polysulfone (PSf) polymer. First, graphene oxide (GO) nanoplates were synthesized using natural graphite powder according to the Hummers method. Fe3O4/GO was then prepared by mixing both GO and Fe3O4 in the presence of ammonia hydroxide (NH4OH) according to co-precipitation method. A series of test, such as X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM) were performed to characterize the produced Fe3O4/GO nano-hybrid. Mixed-matrix membrane was fabricated by casting the pre-mix PSf-Fe3O4/GO polymer solution mixture using phase inversion method. The performance of both neat PSf membrane and novel polysulfone-Fe3O4/GO mixed-matrix membrane were evaluated by measuring the membrane permeate flux and humic acid rejection. Experiment demonstrated that the novel polysulfone-Fe3O4/GO mixed-matrix membrane was having 3 times higher permeate flux than the neat PSf membrane despite the drop in humic acid rejection from 89 ± 2% to 84 ± 2%. However, polysulfone-Fe3O4/GO mixed-matrix membrane permeability was increased with the compensation of decreasing retention capacity due to pore size enlargement, higher porosity as well as higher hydrophilicity.

Original languageEnglish
Pages (from-to)83-88
Number of pages6
JournalJournal of Water Process Engineering
Volume15
DOIs
Publication statusPublished - 1 Feb 2017

Fingerprint

Humic Substances
Polysulfones
Graphite
humic acid
Oxides
Graphene
oxide
membrane
Membranes
matrix
polysulfone P 1700
polymer
Polymers
Fluxes
Hydrophilicity
Polymer solutions
Porosity
Coprecipitation
graphite
Transmission Electron Microscopy

Keywords

  • Graphene oxide
  • Iron oxide
  • Mixed-matrix membrane
  • Polysulfone

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Biotechnology
  • Waste Management and Disposal
  • Safety, Risk, Reliability and Quality

Cite this

Preparation of novel polysulfone-Fe3O4/GO mixed-matrix membrane for humic acid rejection. / Chai, P. V.; Mahmoudi, E.; Yeit Haan, Teow; Mohammad, Abdul Wahab.

In: Journal of Water Process Engineering, Vol. 15, 01.02.2017, p. 83-88.

Research output: Contribution to journalArticle

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