Method for suppressing the leachability of certain metals

Details Method for suppressing the leachability of certain metals Method for suppressing the leachability of certain metals

C - Chemistry, Metallurgy

02

F

C02F 1/62 (2006.01) B09C 1/08 (2006.01) C09K 17/02 (2006.01)

Patent

CA 2532770

The interaction of Sn, Sb and Pb with tungsten in contact with an aqueous medium has a synergistic effect in which the leachability of each metal is suppressed. This means that tungsten has the ability to suppress the leachability of these same metals, in particular lead. For example, tungsten may be added to the lead-contaminated soil in order to suppress lead contamination of the ground water by forming lead tungstate which has a very low solubility.

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