Synthesis and characterization of mixed matrix membranes incorporated with hydrous manganese oxide nanoparticles for highly concentrated oily solution treatment

Vaan Doraisammy, Gwo Sung Lai, Sutrasno Kartohardjono, Woei Jye Lau, Kok Chung Chong, Soon Onn Lai, Hasrinah Hasbullah, Ahmad Fauzi Ismail

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

In this work, ultrafiltration (UF) mixed matrix membranes (MMMs) incorporated with hydrophilic hydrous manganese oxide (HMO) nanoparticles were synthesized and used for the treatment process of a highly concentrated oily solution. The MMMs were fabricated via a phase inversion process and were characterized with respect to physiochemical properties and filtration performances. The results showed that the MMMs demonstrated higher water flux and better oil rejection rates compared to the control membrane (without HMO incorporation) when tested at three different oily solutions with oil concentration in the range of 5000–15 000 ppm. The membrane incorporated with the highest amount of HMO (labelled as MMM-2) in particular showed the best results even when subjected to 15 000 ppm oily solution filtration, recording water flux of 32.2 L/m2 · h · bar and oil rejection of 82 %. The enhanced performance can be attributed to improved surface hydrophilicity coupled with better structural integrity and higher porosity that contributed to lower degree of oil molecules deposition and greater water transport rate. It was also reported that with the use of a feed spacer during the filtration process, the degree of flux deterioration of MMMs could be further reduced without compromising rejection. The findings of this work indicated the potential of MMMs for the treatment of highly concentrated oily effluent produced from industries, by producing permeate of high quality at reasonably good water permeability.

Original languageEnglish
Pages (from-to)1612-1619
Number of pages8
JournalCanadian Journal of Chemical Engineering
Volume96
Issue number7
DOIs
Publication statusPublished - Jul 2018

Keywords

  • mixed matrix membrane
  • nanoparticles
  • oil molecules
  • rejection
  • ultrafiltration

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