Reverse osmosis separation process using porous asymmetric acety

Details Reverse osmosis separation process using porous asymmetric acety Reverse osmosis separation process using porous asymmetric acety

1978-08-31

1981-01-27

Spear, Jr., Frank A.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210651, 210655, 2105002, B01D 1300

Patent

active

042474019

ABSTRACT:
A method for the separation of organic or metallo-organic substances from salts by reverse osmosis is provided. The membranes used are asymmetric acetyl cellulose membranes modified by covalently bonded residues of reactive dyestuffs containing ionizable groups. The diameter of the pores on the surface of the membrane is 5 to 100 A.

REFERENCES:
patent: 3228876 (1966-01-01), Mahon
patent: 3497072 (1970-02-01), Cannon
patent: 3557073 (1971-01-01), Kay
patent: 3647086 (1972-03-01), Mizutani et al.
patent: 3723306 (1973-03-01), Bridgeford
patent: 3824150 (1974-07-01), Lilly et al.

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