Tran, T.T.V. and Kumar, S.R. and Nguyen, C.H. and Lee, J.W. and Tsai, H.-A. and Hsieh, C.-H. and Lue, S.J. (2021) High-permeability graphene oxide and poly(vinyl pyrrolidone) blended poly(vinylidene fluoride) membranes: Roles of additives and their cumulative effects. Journal of Membrane Science, 619. ISSN 03767388
Full text not available from this repository.Abstract
We prepared poly (vinylidene fluoride) (PVDF) based membranes via the phase inversion method to investigate the individual and simultaneous effects of graphene oxide (GO) and poly (vinyl pyrrolidone) (PVP) additives. It was demonstrated that the noticeable contribution of GO was to lower membrane surface charge. The principal role of PVP was to enhance membrane porosity, α-to-β phase transformation and mechanical strength. PVP also assisted GO distribution in the membrane matrix owing to their hydrogen-bonding interactions. GO-PVP-PVDF membrane showed cumulative effects in membrane physicochemical properties. In both pure water and naphthol blue black (NBB) dye solutions at pHs 4�10, the filtrate permeance increased from the pure PVDF to GO-PVDF, PVP-PVDF and GO-PVP-PVDF membranes. Therein, GO and PVP introduction provided permeance increases by one order of magnitude. All the membranes exhibited high dye rejections of �80.0 due to the Donnan exclusion mechanism. The membranes showed negligible dye adsorption. The stable filtration performance was demonstrated over 24-h multi-cycle filtration. The GO-PVP-PVDF membrane achieved outstanding high permeance (953�1350 L m�2 h�1 MPa�1) and excellent dye removal efficiencies (83.2�87.5), which opened an avenue for application of this PVDF composite membrane to actual dye wastewater treatment. © 2020 Elsevier B.V.
Item Type: | Article |
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Additional Information: | cited By 27 |
Uncontrolled Keywords: | Additives; Composite membranes; Fluorine compounds; Graphene; Hydrogen bonds; Membranes; Physicochemical properties; Wastewater treatment, Donnan exclusion mechanism; Dye wastewater treatments; Filtration performance; Hydrogen bonding interactions; Membrane surface charge; Phase-inversion method; Poly (vinylidene fluoride)(PVDF); Poly(vinylidene fluoride), Filtration, amido black; graphene oxide; polyvinylidene fluoride; povidone, adsorption; Article; chemical composition; contact angle; controlled study; filtration; hydrogen bond; hydrophilicity; pH; physical chemistry; pore size distribution; porosity; priority journal; surface area; surface charge; tensile strength; waste water management; zeta potential, Additives; Filtration; Fluorine Compounds; Hydrogen Bonds; Membranes; Permeability; Phase Transition; Solutions |
Depositing User: | Mr Ahmad Suhairi UTP |
Date Deposited: | 10 Nov 2023 03:29 |
Last Modified: | 10 Nov 2023 03:29 |
URI: | https://khub.utp.edu.my/scholars/id/eprint/15255 |