Preparation of PES based GO-SiO2 mixed matrix membranes for the treatment of oily wastewater

  • Maryam Alkindy

Student thesis: Master's Thesis

Abstract

The treatment of oily wastewater continues to pose a challenge in industries worldwide due to strict discharge effluent regulations. Membranes have been recently investigated for their use in oily wastewater treatment due to their efficiency and relatively facile operational process. Graphene oxide (GO) and silica (SiO2) nanoparticles possess excellent properties and have been found to improve membrane properties. In this study, a polyethersulfone (PES) based GO-SiO2 mixed matrix membrane (MMM) was fabricated using the phase inversion technique for the treatment of oily refinery wastewater. The PES/GO-SiO2 membrane exhibited the highest water flux (2561 LMH) and a 38% increase in oil removal efficiency in comparison to the PES membrane. The contact angle of the control PES membrane (85°) decreased steadily upon the addition of the nanoparticles reaching a value of 58° for the PES/GO-SiO2 MMM. The PES/GO and PES/SiO2 membranes obtained a flux of 2511 LMH and 718 LMH and displayed contact angles of 62° and 65° respectively. The addition of nanoparticles greatly influenced membrane properties and as such these membranes show great potential in their use for the treatment of oily wastewater.
Date of AwardJul 2019
Original languageAmerican English

Keywords

  • mixed matrix membranes
  • oily wastewater
  • phase inversion
  • graphene oxide
  • silica.

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