C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 25/234 (2006.01) B01J 49/00 (2006.01) C01B 25/222 (2006.01) C02F 1/42 (2006.01) C02F 11/00 (2006.01) C05F 1/00 (2006.01) C05F 7/00 (2006.01)
Patent
CA 2681306
Phosphorous ions are extracted (210) from solutions by adsorbing phosphorous ions in a scavenger and by releasing the phosphorous ions into an eluate during regeneration (230) of the scavenger. The regeneration (230) is performed by ammonia. Phosphate anions are precipitated (262) in form of tri-ammonium phosphate upon introduction (260) of excess amounts of ammonia. The ammonia remaining in solution after the precipitation of tri- ammonium phosphate is reused (266) for regenerating the scavenger.
L'invention concerne un procédé d'extraction (210) d'ions phosphore de solutions, qui consiste à adsorber les ions phosphore dans un entraîneur et à libérer les ions phosphore dans un éluat pendant la régénération (230) de l'entraîneur. La régénération (230) est assurée par de l'ammoniac. Les anions phosphate sont précipités (262) de manière qu'ils forment du phosphate de triammonium lors de l'introduction (260) de quantités excessives d'ammoniac. L'ammoniac restant dans la solution après la précipitation du phosphate de triammonium est réutilisé (266) pour régénérer l'entraîneur.
Easymining Sweden Ab
Marks & Clerk
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