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:
Feb. 26, 1991
Filed:
Mar. 21, 1990
Applicant:
Inventors:
Donald T Eadie, North Vancouver, CA;
Thomas M Fyles, Victoria, CA;
Assignee:
MacMillan Bloedel Limited, , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210639 ; 210641 ; 210651 ;
Abstract
It has been found that certain chemicals such as peroxide may be concentrated in an aqueous solution by increasing the pH of a feed liquor to increase the amount of the chemcial in an ionized form, i.e. increase the ionized fraction and then separating the feed liquor by reverse osmosis through a reverse osmosis membrane into a retentate having an enhanced concentration of chemical in ionized form relative to the feed liquor and a permeate having a reduced concentration of chemical in ionized form relative to the feed liquor. The process is particularly suited to increasing the concentration of hydrogen peroxide.