METHOD FOR PURIFYING AQUEOUS HYDROGEN PEROXIDE CONTAINING IMPURITIES

PROBLEM TO BE SOLVED: To provide a method for purifying a hydrogen peroxide aq. solution containing impurities. SOLUTION: This method for purifying the hydrogen peroxide solution containing the impurities, a part of which is in ionic state, is by passing the aq. solution through at least one kind of...

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Bibliographic Details
Main Authors DEMAY DIDIER, DEVOS CHRISTINE
Format Patent
LanguageEnglish
Published 09.05.2000
Edition7
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To provide a method for purifying a hydrogen peroxide aq. solution containing impurities. SOLUTION: This method for purifying the hydrogen peroxide solution containing the impurities, a part of which is in ionic state, is by passing the aq. solution through at least one kind of a 1st anion type resin to remove an anionic impurity and next, through a cation type 2nd resin to remove at least a part of a cationic impurity or vice-versa to purify. At least a 1st bed and a 2nd bed of the anion type 1st resin are arranged in parallel and the aq. solution is sent alternately to the 1st bed or the 2nd bed and the switch from 1st bed to the 2nd bed (or vice-versa) is executed when the 1st bed is at least partially saturated with at least one kind of anion constituting the anionic impurity.
Bibliography:Application Number: JP19990294418