Method of treating polyamide membranes to increase flux

Details Method of treating polyamide membranes to increase flux Method of treating polyamide membranes to increase flux

1996-02-02

1998-05-26

Fortuna, Ana

Liquid purification or separation

Filter

Material

21050038, 210490, 264 48, B01D 3900

Patent

active

057559643

ABSTRACT:
The flux of a composite reverse osmosis or nanofiltration membrane having a polyamide discriminating layer is enhanced in a one-step process in which the discriminating layer is treated with ammonia or certain alkylamines. It is possible to control both rejection rate and flux of the membrane as well as convert reverse osmosis membranes into nanofiltration membranes.

REFERENCES:
patent: 3926798 (1975-12-01), Cadotte
patent: 3992495 (1976-11-01), Sanon et al.
patent: 4039440 (1977-08-01), Cadotte
patent: 4388189 (1983-06-01), Kawaguchi et al.
patent: 4634531 (1987-01-01), Nakagawa et al.
patent: 4765897 (1988-08-01), Cadotte et al.
patent: 4812238 (1989-03-01), Cadotte et al.
patent: 4812270 (1989-03-01), Cadotte et al.
patent: 4824574 (1989-04-01), Cadotte et al.
patent: 4964998 (1990-10-01), Cadotte et al.
Derwent Abstracts, No. 83-21146K, Abstract of JP 58011005, Toray Ind. Inc., Jan. 21, 1983, "Treating Semi Permeable Membrane Comprising Crosslinked Polymer . . . ".

Affiliated with

Also associated with

Rating

Method of treating polyamide membranes to increase flux does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of treating polyamide membranes to increase flux, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of treating polyamide membranes to increase flux will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1956431