The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 1999
Filed:
Jan. 25, 1995
Applicant:
Inventor:
Hans C Hein, Santiago, CL;
Assignee:
Henkel Corporation, Plymouth Meeting, US;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210634 ; 210638 ; 210804 ;
Abstract
A method for the recovery of extractant from the aqueous effluent continuously exiting from a solvent extraction circuit, in which the effluent is contacted with the same water-immiscible diluent being used in the circuit as solvent for the extractant, such that the extractant transfers from the aqueous effluent phase to the diluent phase. The diluent phase, now enriched in extractant, is separated from the aqueous effluent, now depleted in extractant. The separated diluent phase can then be recontacted with effluent or may be combined with the organic phase of the solvent extraction circuit.