Removal of metals from solution

Details Removal of metals from solution Removal of metals from solution

C - Chemistry, Metallurgy

02

F

362/40

C02F 1/42 (2006.01) B01J 20/32 (2006.01) C10G 25/02 (2006.01)

Patent

CA 1128219

4680 ABSTRACT OF THE DISCLOSURE Metals are removed from aqueous or organic solution by contacting the solution with a product, derived from an inorganic oxide containing surface hydroxyl groups, e.g., silica, containing groups of general formulae (I) and/or (II). (I) Image (II) R is a divalent radical containing up to 20 carbon atoms, R1 and R2 are halogen atoms, organic radicals containing up to 20 carbon atoms, or hydrolysis products thereof, M is a metallic or hydrogen ion and (a) is an integer corresponding to the valency of M. Suitable metals for removal include copper, silver, rhodium, lead, uranium, palladium, cobalt and mercury. The process may be used to recover wanted metals or to remove contaminants. 11.

338546

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