Removal of heavy metals, especially lead, from aqueous...

Details Removal of heavy metals, especially lead, from aqueous... Removal of heavy metals, especially lead, from aqueous...

C - Chemistry, Metallurgy

02

F

C02F 1/58 (2006.01) B01D 15/04 (2006.01) B01J 39/14 (2006.01) C01B 33/20 (2006.01)

Patent

CA 2097728

A process for the removal of heavy metals such as lead, cadmium, zinc, chromium, arsenic and mercury from aqueous so- lutions containing one or more of said metals as well as competing ions such as calcium and/or magnesium by contacting said aqueous solution with amorphous titanium or tin silicates is disclosed. Said amorphous titanium and tin silicates are character- ized by a silicon-to-titanium or tin molar ratio of from 1:4 to 1.9:1 and a cumulative desorption pore volume ranging from about 0.03 to about 0.25 cubic contimeters per gram.

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