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- W2038032904 abstract "Polyvinylidene fluoride (PVDF) membranes were modified using L2MM, a new type of hydrophilic polyurethane additive, to improve membrane performance. Membranes were prepared using 15 and 18%PVDF and small weight percentages (i.e., 1.5 and 3%) of L2MM. Their fouling resistance was evaluated by filtration/fouling tests with Ottawa River Water (ORW) using membranes incorporating two different types of L2MMs (L2MM(PEG-200) and L2MM(PEG-600)). For comparisons a commercial membrane (HFM-180) was also tested. A PVDF membrane prepared with 3% L2MM(PEG-200) which produced the highest cumulative permeate volume, had a lower flux reduction and its TOC removal was 24% higher than the HFM-180 membrane. L2MM produced more hydrophilic PVDF membranes which had pure water permeation (PWP) rates up to 128% greater than the control PVDF membranes. Many of the L2MM blended membranes had significantly higher total organic carbon (TOC) removals than the HFM-180 membrane tested (64–67% versus 46%). Modeling of the flux decline suggested the membranes fouled via a combination of pore blocking and cake filtration; scanning electron microscopy (SEM) of the fouled membrane surface confirmed the existence of a cake layer." @default.
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- W2038032904 date "2012-02-01" @default.
- W2038032904 modified "2023-09-27" @default.
- W2038032904 title "More fouling resistant modified PVDF ultrafiltration membranes for water treatment" @default.
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- W2038032904 doi "https://doi.org/10.1016/j.desal.2011.11.048" @default.
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