Porous iron oxide and method for producing the same and...

Details Porous iron oxide and method for producing the same and... Porous iron oxide and method for producing the same and...

C - Chemistry, Metallurgy

01

G

C01G 49/02 (2006.01) B01J 20/06 (2006.01) C02F 1/28 (2006.01)

Patent

CA 2682725

A recovery agent for recovering arsenic, fluorine, lead, and selenium from a solution containing environmentally hazardous substances including arsenic and fluorine. A porous iron oxide having a particle diameter of 10-100 µm and a specific surface area as determined by the three-point BET method of 50 m2/g or larger is introduced into a solution containing the environmentally hazardous substances. Alternatively, a solution containing the environmentally hazardous substances is passed through a column packed with the porous iron oxide. Thus, the environmentally hazardous substances are recovered from the solution.

L'invention porte sur un agent de récupération permettant de récupérer l'arsenic, le fluor, le plomb et le sélénium dans une solution contenant des substances dangereuses pour l'environnement, y compris l'arsenic et le fluor. Un oxyde de fer poreux ayant un diamètre particulaire allant de 10 à 100 µm et une aire de surface spécifique telle que déterminée par la méthode BET à trois points de 50 m~/g ou plus est introduit dans une solution contenant les substances dangereuses pour l'environnement. En variante, une solution contenant les substances dangereuses pour l'environnement est passée à travers une colonne remplie d'oxyde de fer poreux. Ainsi, les substances dangereuses pour l'environnement contenues dans la solution sont récupérées.

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