A process for the recovery of iodine from aqueous solutions...

Details A process for the recovery of iodine from aqueous solutions... A process for the recovery of iodine from aqueous solutions...

C - Chemistry, Metallurgy

01

B

C01B 7/14 (2006.01) A61K 49/04 (2006.01) B01D 61/04 (2006.01)

Patent

CA 2351636

A process for the recovery of iodine from mother liquors or wastes containing iodinated organic compounds, by mineralisation of organic iodine and subsequent transformation of the formed iodide into elementary iodine, characterized in that the aqueous solution is concentrated to a suitable volume before the mineralisation step, under atmospheric pressure and at the boiling temperature, and said solution is purified by nanofiltration.

L'invention porte sur un procédé de récupération de l'iode à partir de liqueurs mères ou de déchets contenant des composés organiques iodés, et cela, par minéralisation de l'iode organique et par transformation ultérieure de l'iode obtenue en iode élémentaire. Ce procédé se caractérise en ce que la solution aqueuse est concentrée à un volume approprié avant l'étape de minéralisation, sous pression atmosphérique et à température d'ébullition, puis est purifiée par nanofiltration.

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