Concentrate method of ion-exchanging aluminosilicates and...

Details Concentrate method of ion-exchanging aluminosilicates and... Concentrate method of ion-exchanging aluminosilicates and...

B - Operations, Transporting

01

J

B01J 20/02 (2006.01) B09C 1/00 (2006.01)

Patent

CA 2645207

It has been found that phosphorous-containing and oxyanion compounds can be removed efficiently and economically by adsorption with cation-exchanged aluminosilicates that are ion-exchanged in a concentrated aluminosilicate composition containing the aluminosilicate, the exchange cations, and only about 15% to about 50% by weight water, based on the total weight of the aluminosilicate and water. Further, the ion-exchange process described herein has been found to be effective, in addition to those complexing or ion- exchange elements described in the Douglas '383 patent, when complexed or ion-exchanged with one or more elements of Group VIII (Fe, Co, Mi, Ru, Rh, Pd, Re, Os, Ir), Group IB (Cn, Ag, Au), and Group IEB (Zn, Cl, Hg).

L'invention concerne l'élimination de composés d'oxyanion et de composés contenant du phosphore de manière efficace et économique par adsorption avec des aluminosilicates à échange de cations, dont les ions sont échangés dans une composition concentrée d'aluminosilicate contenant l'aluminosilicate, les cations d'échange et seulement d'environ 15 % à environ 50 % en poids d'eau, par rapport au poids total de l'aluminosilicate et de l'eau. Le procédé d'échange ionique ci-décrit est également efficace, en plus des éléments d'échange ionique ou complexants décrits dans le brevet Douglas '383, lors d'une complexation ou d'un échange ionique avec un ou plusieurs éléments du groupe VIII (Fe, Co, Mi, Ru, Rh, Pd, Re, Os, Ir), du groupe IB (Cn, Ag, Au) et du groupe IEB (Zn, Cl, Hg).

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