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:
Sep. 11, 1990
Filed:
Mar. 09, 1988
Applicant:
Inventors:
Alex Magdics, Lakeland, FL (US);
Donald B Stain, Lakeland, FL (US);
Assignee:
UNC Reclamation, Mulberry, FL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G / ; B01D / ;
U.S. Cl.
CPC ...
423 54 ; 423 24 ; 423 27 ; 423 32 ; 423 34 ; 423 36 ; 423 38 ; 423 42 ; 423 45 ; 423 46 ; 423 56 ; 423 57 ; 423 92 ; 423 98 ; 423139 ; 423140 ; 423146 ; 423150 ; 423D / ; 210660 ; 210634 ; 502 11 ;
Abstract
Aqueous effluent solutions containing metal cations may be treated with an extractant comprising an organophosphinic acid, a di-2-ethylhexyl phosphoric acid and/or an aliphatic amine to selectively separate chromium, nickel, cobalt, copper and lead cations from the aqueous solution. Typical extraction techniques include liquid-liquid extraction employing either mixer settlers or columns, liquid membrane extraction and selective supported membrane extraction.