Patent ID: 6605158
Filing Date: 2003-08-12
Classification: C11D,G21F

Abstract:
A method for removing radioactive contaminants from a surface comprising the steps of:a) applying to the surface an aqueous solution wherein the aqueous solution comprises a wetting agent and an active agent, said wetting agent being selected from the group consisting of methanol, ethanol, propanol, isopropanot, butanol, propargyl alcohol, tertiary butyl alcohol, pentanol, propylene glycol, polypropylene glycol, ethylene glycol, and mixtures thereof and said active agent being a complex substituted keto-amine having the formula wherein R is selected from the group consisting of abietyl, hydroabietyl, and dehydroabietyl; wherein Râ€³ is an alpha ketonyl having fewer than 10 carbon atoms; and wherein Râ€² is either H or CH2Râ€³;b) retaining the aqueous solution on the surface for a period of time to allow radioactive contaminants to migrate into the aqueous solution; and c) removing the aqueous solution containing the radioactive contaminants from the surface.