Method for stabilization of arsenic bearing waste or material
OwnerKeith Forresterinventor
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Abstract
This invention provides a method for stabilization of arsenic bearing materials and wastes subject to acid and water leaching tests or leach conditions by addition of stabilizing agents such that the leaching potential is inhibited to desired levels and the material or waste is free flowing. The resultant material or waste after stabilization is deemed suitable for on-site reuse, off-site reuse or disposal as RCRA non-hazardous waste.
Claims8
A method of reducing the solubility of arsenic bearing material or waste, comprising contacting arsenic bearing material or waste with at least one stabilizing agent in an amount effective in reducing the leaching of combined heavy metals from the material or waste to a level no more than non-hazardous levels as determined in an EPA TCLP test, performed on the stabilized material or waste, as set forth in the Federal Register, vol. 55, no. 126, pp. 26985-26998 (Jun. 29, 1990).
A method of reducing the solubility of arsenic bearing material or waste, comprising contacting arsenic bearing material or waste with at least one stabilizing agent in an amount effective in reducing the leaching of combined heavy metals from the material or waste to a level no more than non-hazardous levels as determined in SPLP, United Kingdom DI, Japan DI or Swiss sequential water leach test, performed on the stabilized material or waste.
Dependencies are inferred from the claim text.