Polyester-supported (poly(ary1 ether sulfone) ultra-and microfiltration membranes were evaluated as substrates on which to dynamically form hydrous zirconium (IV) oxide-polyelectrolyte membranes. These substrates were used in both the flat sheet and tubular form. The initial results obtained with a
Hyperfiltration by dynamically formed hydrous zirconium oxide and aluminum oxide membranes
โ Scribed by P. Hoornaert; C. Lefebvre; A. Van Haute
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- English
- Weight
- 595 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0011-9164
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โฆ Synopsis
Membranes
can be formed dynazkally on a porous support by adding an appropriate additive to the solution to be desalted. Experiments were performed with the hydrous
๐ SIMILAR VOLUMES
Dynamic membranes are formed in situ when a dilute solution of one or more specific additives is passed over the surface of a porous support. Zirconium (iv) species are polymerised in aqueous solution and polymerisation increases with decreasing acidity. At concentrations as low as 10 -4 molar zirc
A non-homogeneous poly (acrylic acid-covinyl alcohol) copolymer (I ) was synthesized. This copolymer was used as polyelectrolyte in a dynamically formed hydrous zirconium (IV) oxide-polyelectrolyte membrane. The resultant Zr (I) membrane gave salt rejection figures exceeding 99% and flux values of 2
A series of poly (acrylic acid-covinyl acetate) (I) copolymers were synthesized. Selected copolymers were hydrolyzed fully to give the corresponding poly (acrylic acid-covinyl alcohol) (II) copolymers. One of the (I) copolymers was partially hydrolyzed to yield two poly (acrylic acid-covinyl acetate