Membrane separation process

Details Membrane separation process Membrane separation process

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D21C 11/00 (2006.01) B01D 61/02 (2006.01) B01D 61/04 (2006.01) B01D 61/58 (2006.01) C01B 15/013 (2006.01) C02F 1/44 (2006.01) D21C 9/16 (2006.01)

Patent

CA 2079238

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 chemical 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.

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