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The effect of precipitating media on the performance of porous cellulose acetate reverse osmosis membranes

✍ Scribed by J.W. Carter; G. Psaras; M.T. Price

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
436 KB
Volume
12
Category
Article
ISSN
0011-9164

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✦ Synopsis

A two-stage method of making semi-permeable high flux reverse osmosis membranes was developed using water-ethanol mixtures to precipitate the cellulose acetate. This eliminated the need for heat treatment and produced membranes with fluxes up to 5 m'/m2 day and sodium chloride rejections up to 85 % . Their properties are compared with membranes made by the three-stage method involving heat treatment and show more sensitivity to the effects of pressure .

πŸ“œ SIMILAR VOLUMES

Effect of casting conditions on the perf
Effect of casting conditions on the performance of porous cellulose acetate membranes in reverse osmosis
✍ B. Kunst; S. Sourirajan πŸ“‚ Article πŸ“… 1970 πŸ› John Wiley and Sons 🌐 English βš– 553 KB

Several sets of porous cellulose acetate membranes were made using the same casting solution composition and gelation conditions but varying the casting solution temperature and solvent evaporation conditions. The films were tested in reverse osmosis experiments at 250 psig using aqueous feed soluti