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- W2045007168 abstract "Abstract Ultrafiltration (UF) is considered as a potential alternative to gravity settling in liquid surfactant membrane process for fast separation of water-in-oil (W/O) emulsions from the external aqueous phase. Flux behavior was studied in this work during batch UF of W/O/W solutions by poly(vinylidene fluoride) (PVDF) membrane with a molecular weight cut-off of 30 kDa after the membrane was modified by remote cyclonic atmospheric-pressure plasma with argon gas and methane/argon gas mixture. Physicochemical properties of the membrane surfaces including hydrophilicity, functional group concentrations, and pore size distribution before and after plasma modifications were determined by static contact angle measurements, X-ray photoelectron spectroscopy, and capillary flow porometry, respectively. Higher surface concentrations of oxygen functional groups for plasma-functionalized membranes were observed compared to the unmodified membranes. It was shown that UF flux was significantly enhanced with the plasma-modified membranes under the conditions studied (feed, 5 vol% W/O emulsions; stirring, 300 rpm; pressure, 35–138 kPa). Resistance-in-series analysis of the flux data indicated that the proposed remote plasma treatment, particularly with methane/argon gas mixture, could considerably reduce both resistances due to solute adsorption and cake layer formation on the membrane surface, although the above two resistances always contributed more than 71% of the total filtration resistance." @default.
- W2045007168 created "2016-06-24" @default.
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- W2045007168 date "2014-09-01" @default.
- W2045007168 modified "2023-09-26" @default.
- W2045007168 title "Surface modification of PVDF ultrafiltration membranes by remote argon/methane gas mixture plasma for fouling reduction" @default.
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- W2045007168 doi "https://doi.org/10.1016/j.jtice.2014.06.025" @default.
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