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- W51182602 abstract "Abstract A method of water recovery from dye solutions by meaas of ultrafiltration, is described. The process involved polysulfone membranes prepared from 15% polysulfone solution in dimethylformamide, and formed on a glass support. The casting solutions were prepared at different initial temperatures (303, 318, 333 and 348 K) and at various solvent evaporation times (30, 60, 90 and 120 s). The membrane thickness was between 30 and 135 μm. The ultrafiltration process was carried out in a pressure range of 0.5 to 2.5 MPa. The molecular weight of the dye was 739. Transport properties of the membranes were found to be better with thicker membranes, shorter evaporation times and higher temperatures of the casting solution. Investigating separation properties it has been found that polysulfone membranes are characterized by a high ability (90-100%) to separate dyes from water solutions regardless of casting parameters and of pressure applied. The volume flow through the membranes of the best separation properties does not exceed a value of 0.14 m 3 /m 2 at 2.5 MPa. The decrease in the hydraulic permeability of the membranes during ultrafiltration of dyes is insignificant (less than 5%)." @default.
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- W51182602 date "1982-01-01" @default.
- W51182602 modified "2023-09-27" @default.
- W51182602 title "Ultrafiltration of Dyes by Polysulfone Membranes" @default.
- W51182602 cites W139274428 @default.
- W51182602 doi "https://doi.org/10.1016/s0166-1116(08)71179-8" @default.
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