Method of purifying an aqueous solution

Details Method of purifying an aqueous solution Method of purifying an aqueous solution

C - Chemistry, Metallurgy

01

D

C01D 3/14 (2006.01) C01B 7/14 (2006.01)

Patent

CA 2630905

Method of purifying an aqueous solution comprising iodide, calcium and magnesium ions, according to which in a first step the solution is alkalized in order to precipitate calcium and magnesium, which are separated out, and in a second step the aqueous solution from the separation is oxidized in order to oxidize the iodide ions to iodine that is removed over a basic halogenated anion exchange resin, the exchange resin being regenerated by using a portion of the aqueous solution from the separation.

La présente invention concerne une méthode de purification d'une solution aqueuse qui comprend des ions iodure, calcium et magnésium, selon laquelle, dans une première étape, la solution est basicifiée afin de faire précipiter le calcium et le magnésium, qui sont ensuite éliminés, et dans une seconde étape, la solution aqueuse après élimination est oxydée afin d'oxyder les ions iodure en iode qui est éliminé sur une résine basique échangeuse d'anions halogénés, ladite résine échangeuse étant régénérée par l'emploi d'une partie de la solution aqueuse issue de la séparation.

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