Journal
CHEMOSPHERE
Volume 263, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2020.128140
Keywords
Oily wastewater treatment; Omniphobic membrane; Fluorinated-silica nanoparticles; Direct-contact membrane distillation; Anti-oil-fouling and anti-wetting membrane
Categories
Funding
- Technology Development Program to Solve Climate Changes of the National Research Foundation (NRF) - Ministry of Science, ICT & Future Planning [2017M1A2A2047489]
- Pakistan Government under the Higher Education Commission (HEC) Scholarship Program: Human Resource Development Initiative (HRDI)-Faculty Development of University of Engineering Science and Technology Pakistan (UESTPs)-UETs Project
Ask authors/readers for more resources
This study developed an anti-oil-fouling omniphobic polyethersulfone membrane using fluorinated silica nanoparticles for treatment against oil-in-water emulsions. The membrane exhibited effective anti-oil-fouling and antiewetting performance regardless of surfactant charge and concentration of components, with flux reduction and rejection rates within specific ranges.
Directecontact membrane distillation (DCMD) can be eminent solution for oily wastewater treatment if the membrane provided is slippery and tolerant to low surface tension complex solutions. This study describes preparation of an anti-oil-fouling omniphobic polyethersulfone membrane using fluorinated silica nanoparticles (FeSiO2@PES) combined with perfluorodecyl triethoxysilane and polydimethylsiloxane for application against oil-In-water (o/w) emulsions. Feed solutions consist of different concentrations of oil (hexadecane), different charge surfactants (anionic sodium dodecyl benzenesulfonate, non-ionic Tween 20, and cationic hexadecyltrimethylammonium bromide, and salt (NaCl). The hierarchical re-entrant micro structured surface of the omniphobic FeSiO2@PES membrane and functional groups are confirmed by atomic force microscopy, scanning electron microscopy, and Fourier-transform infrared spectroscopy. The antieoil-fouling and antiewetting performance of omniphobic FeSiO2@PES membranes are investigated using contact-angle, sliding angles, DCMD tests with multiple foulants of surfactants. Omniphobic FeSiO2@PES membrane exhibited effective anti-oil-fouling and antiewetting performance against emulsions as no severe fouling and a conductivity rises were evident regardless of surfactant charge and the concentration of components. Flux reduction and rejection rates for the omniphobic FeSiO2@PES membranes are in a range of 5-15% (only) and >99%, respectively, for various combinations of feed solution components. (C) 2020 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available