Title:
RECOVERY OF ORGANIC SOLUTES FROM AQUEOUS SOLUTIONS
Document Type and Number:
WIPO Patent Application WO2000029088
Kind Code:
A3
Abstract:
The present invention provides, in one aspect, a novel method for recovering an organic solute from a predominantly aqueous solution. In one embodiment, the solution is contacted with a dry, non-conditioned sorbent medium held by a supporting structure, whereby the solute is absorbed onto the matrix by hydrophobic interactions. A solvent is then passed through the medium, thereby desorbing the solute. Finally, the solute is collected. A further aspect of the invention provides water-wettable sorbent materials for use in solid phase extractions. Embodiments of polymer-based and silica-based sorbent materials are disclosed.
Inventors:
NAU DAVID R
GAN KEVIN
ARKLES BARRY C
SHENG GUICHENG
ZHOU HONG
GAN KEVIN
ARKLES BARRY C
SHENG GUICHENG
ZHOU HONG
Application Number:
PCT/US1999/026569
Publication Date:
October 05, 2000
Filing Date:
November 09, 1999
Export Citation:
Assignee:
VARIAN INC (US)
International Classes:
B01D15/00; B01J20/10; B01J20/26; B01J20/281; C07D239/49; B01J20/32; C07D223/26; C07J1/00; C07J5/00; C08L25/04; C08L33/10; G01N30/52; (IPC1-7): B01D15/00; B01J20/26; B01J20/32; G01N30/48
Domestic Patent References:
| WO1997038774A2 | 1997-10-23 |
Foreign References:
| US5279742A | 1994-01-18 | |||
| US5062959A | 1991-11-05 | |||
| EP0386926A2 | 1990-09-12 | |||
| GB932125A | 1963-07-24 | |||
| EP0635301A2 | 1995-01-25 | |||
| EP0376883A1 | 1990-07-04 | |||
| EP0579102A1 | 1994-01-19 |
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