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Upgrading the performances of polysulfone/polyetherimide ultrafiltration composite membranes for dyes removal: Experimental and molecular dynamics studies
- Source :
- Journal of Molecular Liquids. 331:115743
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Organic dye pollutants released by textile industries pose a threat to public health and environmental quality. Hence, a greater emphasis is required for handling these toxic and non-biodegradable effluents. This paper reports on the performance of polysulfone (PSf)/polyetherimide (PEI) ultrafiltration (UF) composite membranes coated on polyester (PE) support by spin/spray-coating technique to remove reactive blue 171 (RB171) and Basic Red 1 (BR1) from water. Prepared composite membranes with polysulfone (PSf) and different PEI loading (25 wt% (CM25), 30 wt% (CM30), and 35 wt% (CM35)) were initially characterized in terms of morphological, mechanical, wetting and water transport properties. Morphological characterization by SEM showed homogeneous and uniform distribution of PSf/PEI membrane layer on the polyester support. Results showed that composite membranes exhibited both enhanced pure water permeability (PWP) and improved dyes removal capacity. The composite membranes CM35 showed a PWP of 77.42 L/hm2bar, and rejection rates of 93.8% and 78.9% for RB171 and BR1, respectively. Molecular dynamics (MD) simulations indicated that simulated membranes hindered the diffusion of dyes inside layers. This study showed that the combination of polyester support and PSf/PEI membrane layers enabled the design of stable and highly efficient filtration membranes.
- Subjects :
- Materials science
Ultrafiltration
02 engineering and technology
010402 general chemistry
01 natural sciences
law.invention
chemistry.chemical_compound
law
Materials Chemistry
Polysulfone
Physical and Theoretical Chemistry
Spectroscopy
Filtration
Water transport
021001 nanoscience & nanotechnology
Condensed Matter Physics
Polyetherimide
Atomic and Molecular Physics, and Optics
0104 chemical sciences
Electronic, Optical and Magnetic Materials
Polyester
Membrane
chemistry
Chemical engineering
Wetting
0210 nano-technology
Subjects
Details
- ISSN :
- 01677322
- Volume :
- 331
- Database :
- OpenAIRE
- Journal :
- Journal of Molecular Liquids
- Accession number :
- edsair.doi...........dad2f521f57fdeb77f3696e019da04c1