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US 6,186,939 B1Granted
Method for stabilizing heavy metal in a material or waste
OwnerKeith E. Forresterinventor
Life of this patent
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Abstract
Heavy metal bearing materials during production, processing and/or handling, and/or in landfills, storage or retention areas are stabilized prior to the generation of management as a waste by applying heavy metal stabilizing agents into the product stream thus avoiding complex and costly processing, permitting and treatment of waste under hazardous waste regulations.
Claims8
A method for stabilizing a heavy metal in a heavy metal containing paint to reduce leaching of the heavy metal therefrom when said paint is generated into paint waste and is exposed to natural or induced leaching conditions, comprising:
- applying a stabilizing agent onto a surface having painted thereon a heavy metal containing paint to produce a treated paint, wherein the stabilizing agent binds to the heavy metal to form a heavy metal complex when exposed to natural or induced leaching conditions;
- and
- generating the treated paint by into paint waste in which the heavy metal is complexed to the stabilizing agent when exposed to natural or induced leaching conditions, wherein leaching of the heavy metal from the paint waste is reduced.
Dependencies are inferred from the claim text.