Aqueous oxidative scrubber systems for removal of mercury
AssigneeThe United States of America as represented by the Secretary of the Army
InventorJohn A. Starkovich
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Abstract
A scrubber system for removal and recovery of mercury from plated solid substrates comprising a solution of an alkali metal and ammonium dichromate or chromate salts and nitric acid, said salts and acid being in a weight ratio of about 0.2 to 200. A process for removing mercury from cartridge casings and live ammunition utilizing the oxidative scrubber system is also disclosed.
Claims10
A process for removing mercury from plated solid substrates comprising the steps of contacting said solid substrate with an aqueous solution of an oxidative salt and nitric acid in a ratio by weight of from about 1.4 to about 4 for a period sufficient to remove mercury from said substrate, and then removing the solid substrate from the solution, said oxidative salt being selected from the group consisting of alkali metal and ammonium chromate and alkali metal and ammonium dichromate.
Dependencies are inferred from the claim text.