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- W2904684852 abstract "The impact of sodium hydroxide, which is one of chemicals of clean in place (CIP) for removing membrane fouling, on the PVDF membrane is reviewed with respect to physical/chemical structural change, the permeability affected therefrom. Based on the cleaning concentration applied in membrane water treatment facilities, 10% of accumulated defluorination was confirmed up to 166g.hr/L which reflects the exposure time. However, membrane resistance was confirmed to be reduced by about 10%. Through FT-IR and EDS analysis, reduction of F and change of are confirmed as factors that affect the permeability of membrane. Membrane resistance, which affects permeability, is affected by loss of additives for hydrophilicity, rather than defluorination of PVDF material. Therefore, in order to check membrane degradation degree, an accelerated test by NaOH was carried out, loss of additives was confirmed, and then PVDF inherent characteristic was observed." @default.
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- W2904684852 date "2018-10-30" @default.
- W2904684852 modified "2023-10-18" @default.
- W2904684852 title "Effects of exposure intensity of sodium hydroxide on PVDF membrane performance" @default.
- W2904684852 doi "https://doi.org/10.11001/jksww.2018.32.5.453" @default.
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