Novel polyvinylidene fluoride/lead-doped zinc oxide adsorptive membranes for enhancement of the removal of reactive text
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ORIGINAL PAPER
Novel polyvinylidene fluoride/lead‑doped zinc oxide adsorptive membranes for enhancement of the removal of reactive textile dye R. Ben Dassi1 · B. Chamam1 · J. P. Méricq2 · C. Faur2 · L. El Mir3 · I. Trabelsi1 · M. Heran2 Received: 30 July 2020 / Revised: 11 October 2020 / Accepted: 3 November 2020 © Islamic Azad University (IAU) 2020
Abstract Novel hybrid polyvinylidene fluoride/lead-doped zinc oxide nanoparticles ultrafiltration membranes were successfully fabricated for the removal of Reactive Black 5 textile dye. The matrix membranes embedded with various weights of nanoparticles (5, 10 and 20 wt% of polyvinylidene fluoride) prepared by non-solvent induced phase separation wet process method. The membranes’ morphology structure, surface, chemical composition and hydrophilicity were characterized by scanning electron microscope, energy-dispersive X-ray spectrometer analysis and water contact angle. The performances in terms of permeability, porosity, permeate flux and capacities of Reactive Black 5 textile dye retention were evaluated. Whereas the addition of low concentration of lead-doped zinc oxide nanoparticles doesn’t significantly modify polyvinylidene fluoride membranes structure and performance, the addition of 20 wt% of nanoparticles to casting solution modified the morphology, led to reduce the contact angle from 77° to 67° and enhanced the hydrophilicity of membranes. Static sorption and dynamic filtration were performed to evaluate the capacity of membrane to remove the Reactive Black 5 dye. Results showed the polyvinylidene fluoride/lead-doped zinc oxide composite membranes exhibit high efficiency in the adsorption and retention of Reactive Black 5 textile dye in comparison with polyvinylidene fluoride neat. The addition of 20 wt % of nanoparticles in membrane matrix showed high color removal rate (98%) and high adsorption properties in comparison with pure polyvinylidene fluoride membrane. With simple water cleaning, without addition of any chemical agent, the membranes recovered high performance.
Editorial responsibility: S. Hussain. * B. Chamam [email protected] 1
Water Researches and Technologies Center, Borj‑Cedria Technopark, University of Carthage, 8020 Soliman, Tunisia
2
Institut Européen des Membranes,UMR 5635, Université de Montpellier, 300 Avenue du Professeur Emile Jeanbrau, 34090 Montpellier, France
3
Faculty of Sciences of Gabes, Gabes University, Cité Erriadh 6072, Gabes, Tunisia
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Vol.:(0123456789)
International Journal of Environmental Science and Technology
Graphic abstract
Keywords Nanoparticles · Reactive Black 5 · Sorption · Ultrafiltration Abbreviations Pt-Co Echelle platine of cobalt GO Grephene oxide RB5 Reactive Black 5 CR Congo Red D-A-HNTs Dopamine-halloysite nanotubes (HNTs) SAN Styrene-acrylonitrile NPs Nanoparticles UF Utrafiltraion PVDF Polyvinylidene fluoride DMAc N, N –dimethylacetamide PEG Polyethylene glycol NIPS Non-solvent induced phase separation SEM Scanning electron microscope EDX Energy-
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