Perchlorate removal from concentrated salt solutions using amphoteric ion-exchange resins

A process for reducing the concentration of perchlorate in an aqueous concentrated multi-component salt solution comprising treating the salt solution with an amphoteric ion-exchange resin to provide an adsorbed perchlorate and multi anion-containing resin and a perchlorate depleted solution; and re...

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Hauptverfasser: VAN HEEK RONALD P, DRACKETT THOMAS S, MOK FELIX M. F, THIBAULT GILBERT
Format: Patent
Sprache:eng
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Zusammenfassung:A process for reducing the concentration of perchlorate in an aqueous concentrated multi-component salt solution comprising treating the salt solution with an amphoteric ion-exchange resin to provide an adsorbed perchlorate and multi anion-containing resin and a perchlorate depleted solution; and removing the perchlorate depleted solution. The multi-anion are selected from chloride, chlorate, perchlorate, sulphate, and dichromate, present in electrolytic processes for the production of sodium chlorate.