Membrane separation of organics from aqueous solutions
First Claim
1. A process for separating neutral organics from an aqueous solution comprising:
- contacting an aqueous solution containing neutral organics having at least about four carbon atoms per molecule selected from the group consisting of alkanols, alkyl benzenes and organic nitriles with a first surface of a hydrophobic polymeric membrane comprised of an aliphatic nylon selectively permeable to the neutral organic components contained in the aqueous solution, maintaining a second and opposite membrane surface at a lower chemical potential than the first membrane surface for the neutral organic components, permeating a portion of the neutral organic components into and through the membrane, and withdrawing at the second membrane surface a vapor mixture having a higher total concentration of said neutral organic components than the total concentration of said neutral organic components in the aqueous solution contacting said first surface.
0 Assignments
0 Petitions
Accused Products
Abstract
Organics selected from alkanols, alkyl benzenes and organic nitriles are separated from aqueous solutions by contacting the aqueous solution feed with a first surface of a polymeric membrane comprised of an aliphatic nylon selectively permeable to organic components; while maintaining a second and opposite membrane surface at a lower chemical potential than the first membrane surface for said organic components, permeating a portion of the organic components into and through the membrane; and withdrawing from the second membrane surface a mixture having a higher total concentration of organic components than the organic components concentration of the aqueous solution feed stream.
-
Citations
3 Claims
-
1. A process for separating neutral organics from an aqueous solution comprising:
- contacting an aqueous solution containing neutral organics having at least about four carbon atoms per molecule selected from the group consisting of alkanols, alkyl benzenes and organic nitriles with a first surface of a hydrophobic polymeric membrane comprised of an aliphatic nylon selectively permeable to the neutral organic components contained in the aqueous solution, maintaining a second and opposite membrane surface at a lower chemical potential than the first membrane surface for the neutral organic components, permeating a portion of the neutral organic components into and through the membrane, and withdrawing at the second membrane surface a vapor mixture having a higher total concentration of said neutral organic components than the total concentration of said neutral organic components in the aqueous solution contacting said first surface.
- View Dependent Claims (2, 3)
Specification
-
- Resources
-
Current AssigneeMonsanto Company (Bayer AG)
-
Original AssigneeMonsanto Company (Bayer AG)
-
InventorsPerry, Eli
-
Primary Examiner(s)Spear, Jr., Frank A.
-
Application NumberUS05/636,400Time in Patent Office1,723 DaysField of Search55/16, 210/22, 210/23 F, 210/23 H, 210/321, 210/500 MUS Class Current210/640CPC Class CodesB01D 2325/38 Hydrophobic membranesB01D 61/243 DialysisB01D 61/362 PervaporationB01D 69/02 characterised by their prop...
