Composition and process for chromium contaminant fixation in...

Details Composition and process for chromium contaminant fixation in... Composition and process for chromium contaminant fixation in...

C - Chemistry, Metallurgy

09

K

C09K 17/40 (2006.01) B09C 1/08 (2006.01)

Patent

CA 2559331

A method and compositions using an aqueous solution of thiourea dioxide to treat a contaminated site to reduce hexavalent chromium to trivalent chromium and using a second solution of sodium hydroxide containing cationic polyacrylamide to form a relatively impermeable gel in the contaminated site thereby fixing chromium to the extent that there should be no detectable ground water contamination.

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