The influence of mineral fillers on the membrane properties of high flux asymmetric cellulose acetate reverse osmosis membranes
โ Scribed by I. Goossens; A. Van Haute
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 792 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0011-9164
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โฆ Synopsis
To improve the compaction resistance of high flux cefluiose acetate membranes, tiffers were incorporated into the casting solution. Several filler typessilicium oxides, atuminium oxides. montmorriionitc with or without an organic coating and with different physicat properties -were used. During short-term reverse osmosis tests (cu. 7 hours) the water permeability-pressure
๐ SIMILAR VOLUMES
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 %
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