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- W1044297526 abstract "Abstract Antifouling tubular Al 2 O 3 microfiltration membranes were successfully developed with a Magneli Ti 4 O 7 modified inner layer to enhance filtration performance coupled with external electricity. The Magneli Ti 4 O 7 layer was obtained by dip-coating a layer of TiO 2 first and then reducing this layer at 1050 °C in H 2 atmosphere. The fabricated Ti 4 O 7 layer exhibited the conductivity of over 200 S cm −1 with particle size of 200–300 nm, average pore diameter of 350 nm and water contact angle of 0°. The antifouling performance of tubular Ti 4 O 7 /Al 2 O 3 membrane was evaluated through a home-made cross-flow electrically-assisted membrane filtration module for the treatment of three typical feed solutions that are known to foul easily, namely, oily wastewater, humic acid (HA), and bovine serum albumin (BSA). During membrane filtrations, the permeate fluxes of Ti 4 O 7 /Al 2 O 3 composite membranes at around critical electrical potentials could maintain over 90% of their initial values after 1 h, in contrast to the low values obtained with the uncoated Al 2 O 3 membranes, 15.6% for oily wastewater, 62.7% for HA and 41.6% for BSA. Meanwhile, the permeate quality was also improved correspondingly, with oil, HA and BSA rejections increased from 95.8, 2.0 and 18.1% of uncoated Al 2 O 3 membranes to 97.9, 96.2 and 76.1% of Ti 4 O 7 /Al 2 O 3 membranes respectively. The total energy consumed by the electrically-assisted filtration of oily wastewater at around critical electrical potential in 1 h has decreased 58% in comparison with uncoated Al 2 O 3 membrane in terms of kWh m −3 permeate. For HA and BSA, the total amounts of energy also decreased over 53 and 47% compared with corresponding ultrafiltration membranes, which are commonly used for HA and BSA rejections, at the same average permeate fluxes in 1 h. Therefore, the designed electrically-assisted filtration process with Magneli Ti 4 O 7 modified membrane provides a promising alternative for ceramic membrane filtrations with antifouling property, good permeate quality and easy operation." @default.
- W1044297526 created "2016-06-24" @default.
- W1044297526 creator A5019126808 @default.
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- W1044297526 date "2016-01-01" @default.
- W1044297526 modified "2023-10-16" @default.
- W1044297526 title "Magnéli Ti 4 O 7 modified ceramic membrane for electrically-assisted filtration with antifouling property" @default.
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- W1044297526 doi "https://doi.org/10.1016/j.memsci.2015.07.055" @default.
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