Liquid purification or separation – Casing divided by membrane into sections having inlet – Each section having inlet
Patent
1989-01-30
1991-01-15
Sever, Frank
Liquid purification or separation
Casing divided by membrane into sections having inlet
Each section having inlet
21032184, 264 48, B01D 1300, B01D 1304
Patent
active
049851454
ABSTRACT:
A method of preparing a semi-permeable membrane suitable for reverse osmosis includes contacting a porous artifact with an hydrated metal oxide, to form an hydrated metal oxie coated artifact. Thereafter the hydrated metal oxide coated artifact is contacted with at least one polyelectrolyte selected from the group listed in claim 1, thereby to form a polyelectrolyte layer in or on the hydrated metal oxide layer.
REFERENCES:
patent: 3556305 (1971-01-01), Shorr
patent: 3926799 (1975-12-01), Thomas et al.
"Hyperfiltration Studies. IV. Salt Rejection by Dynamically Formed Hydrous Oxide Membranes", by Marcinkowsky et al., Journal of the American Chemical Society/88:24/Dec. 20, 1966, pp 5744 to 5746.
"Hyperfiltration Studies. VI. Salt Rejection by Dynamically Formed Polyelectrolyte Membranes" by Kraus et al. Desalination, 1 (1966) pp. 225 to 230.
"Hyperfiltration Studies X. Hyperfiltration with Dynamically-Formed Membranes" by Kraus et al., Desalination, 2 (1967) pp. 243 to 266.
"Hyper Filtration. XXI. Dynamically-Formed Hydrous Zr(IV) Oxide-Polyacrylate Membranes: by Johnson et al., J. Electronal. Chem. 37 (1972), pp. 267 to "281.
"Reverse Osmosis with Dynamically-Formed Membranes from Water-Soluble Polymers" by Igawa et al., Journal of Applied Polymer Science, vol. 22, (1978), pp. 1607 to 1618.
"Dynamic Polyacrylamide Membranes in the Reverse Osmosis" by Antoniou et al., Desalination, 32 (1980) pp. 47 to 55.
"Desalination by the Use of Dynamically-Formed PVA Membrane" by Ying et al., Elsevier Science Publishers B. V. Amsterdam 1983.
"Properties of Dynamically-Formed Polyblend Membranes" by H. G. Spencer, Desalination, 49 (1984), pp. 193 to 201.
Dowler Norman A.
Sanderson Ronald D.
Van Reenen Albert J.
Sever Frank
Water Research Commission
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