Solvent extraction process using water absorbing solvent at pres

Details Solvent extraction process using water absorbing solvent at pres Solvent extraction process using water absorbing solvent at pres

1994-07-07

1997-09-02

Drodge, Joseph W.

Liquid purification or separation

Processes

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

134 26, 134 40, 210739, 210774, 210804, B01D 1102, B01D 1104

Patent

active

056628021

ABSTRACT:
A method for enhancing solvent extraction of organic wastes from contaminated waste mixtures. A contaminated waste mixture is contacted with a solvent with high driving force for solvation of water, and most preferably with a solvent which is both anhydrous and which has an appreciable affinity for solvation of water. While the solvent is in contact with the contaminated waste mixture, a portion of the organic waste is dissolved in the solvent. Then, the solvated organic waste and residual solvent is removed from the contaminated waste mixture. Solvent is recovered, preferably by distillation, and is then dehydrated, prior to repeating the cycle. The technique substantially improves the degree of removal of certain organic wastes from contaminated waste mixtures, and has been demonstrated to be particularly useful for removal of pesticides from organic waste mixtures.

REFERENCES:
patent: 3088909 (1963-05-01), Davison et al.
patent: 3177139 (1965-04-01), Kimberlin et al.
patent: 3899419 (1975-08-01), Emanuel
patent: 3925201 (1975-12-01), Ames
patent: 4002562 (1977-01-01), Ames et al.
patent: 4056466 (1977-11-01), Peters
patent: 4177038 (1979-12-01), Biebricher et al.
patent: 4405448 (1983-09-01), Googin et al.
patent: 4421649 (1983-12-01), Giskehaug et al.
patent: 4662948 (1987-05-01), Weitzman
patent: 4801384 (1989-01-01), Steiner
patent: 4830754 (1989-05-01), Nowak et al.
patent: 4863607 (1989-09-01), Andrew et al.
patent: 4869825 (1989-09-01), Steiner
patent: 4952315 (1990-08-01), Saab
patent: 4975198 (1990-12-01), Steiner
patent: 5047153 (1991-09-01), Nowak et al.
patent: 5051030 (1991-09-01), Saha et al.
patent: 5055196 (1991-10-01), Darian et al.
patent: 5057222 (1991-10-01), Braden
patent: 5096600 (1992-03-01), Hoch
patent: 5154831 (1992-10-01), Darian et al.
patent: 5296040 (1994-03-01), Dybus et al.
patent: 5340406 (1994-08-01), Fearon
patent: 5453133 (1995-09-01), Sparks et al.
patent: 5507953 (1996-04-01), Machlitt et al.
patent: 5518621 (1996-05-01), Holcombe et al.

Affiliated with

Also associated with

Rating

Solvent extraction process using water absorbing solvent at pres does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Solvent extraction process using water absorbing solvent at pres, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solvent extraction process using water absorbing solvent at pres will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-305332