Abstract: This invention provides an optimal method for stabilization of heavy metal bearing paint residue subject to acid and water leaching tests or leach conditions by addition of environmental safe, worker safe, and multi-media compatible stabilizing agents to the blast media, thus allowing for paint residue stabilization outside of or within an OSHA containment building or collection device, such that leaching of heavy metals such as lead are inhibited to desired levels. The resultant stabilized paint residue and spent blast media mixture is suitable for on-site reuse, off-site reuse, or disposal as RCRA non-hazardous waste.

Abstract: This invention provides a method for heavy metal solubility reduction in waste and material by maximization of water hydration, minimization of surface area and mass, maximization of atmospheric carbonation, optimization of pH environment and optimization of stabilizing agents, such that leaching of heavy metals is inhibited to desired levels. The resultant waste or material after sequenced optimized solubility reduction would be suitable for disposal as RCRA non-hazardous waste or reuse in the environment.

Abstract: This invention provides a method for stabilization and treatment of heavy metal bearing materials and wastes subject to acid leaching tests or leach conditions and odor limits by addition of acid semi-soluble DiCalcium Phosphate DiHydrate such that the leaching potential is inhibited to desired levels and odors are reduced to desired levels and the material or waste is free flowing, more permeable, less weight and permits immediate handling and disposal or reuse. The resultant material or waste after stabilization is deemed suitable for on-site reuse, off-site reuse or disposal as RCRA non-hazardous waste.

Abstract: This invention provides a method for reducing the level of 1.0 Normal HCL soluble heavy metals within the human stomach acid environment by oral ingestion of stabilizing agents such that the heavy metal solubility is reduced and subsequent heavy metal transfer to the blood stream is reduced to acceptable levels or eliminated.

Abstract: This invention provides a method for optimal low cost stabilization of incinerator ash subject to acid and water leaching tests or leach conditions by addition of pH increasing agents, such that leaching of lead and cadmium is inhibited to desired levels. The resultant ash after stabilization is suitable for disposal as RCRA non-hazardous waste.

Abstract: This invention provides a method for optimal stabilization of incinerator ash subject to acid and water leaching tests or leach conditions by addition of a combined acidulation and stabilization agent, such that the acidulated and stabilized ash requires TCLP Fluid #1 and the leaching of lead and cadmium is controlled to desired levels. The resultant ash after stabilization is suitable for disposal as RCRA non-hazardous waste.

Abstract: This invention provides a method for stabilization of incinerator ash subject to acid and water leaching tests or leach conditions by adjustment of the facility acid gas scrubber excess lime and optional addition of stabilization agents, such that leaching of lead and cadmium are inhibited to desired levels. The resultant ash after stabilization is suitable for disposal as RCRA non-hazardous waste.

Abstract: This invention provides a method for chemical stabilization of combined Pb and As bearing materials, contaminated soils 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. The resultant material or waste after stabilization is deemed suitable for on-site reuse, off-site reuse or disposal as RCRA non-hazardous waste.

Abstract: This invention provides a method for stabilization of hexavalent chromium and trivalent chromium bearing wastes, materials, and contaminated soils subject to acid and water leaching tests or leach conditions by addition of water solution, hexavalent chromium reducing agent, precipitating and pH increase agent, and chromium reversion control and stabilizing agents such that leaching of chromium is inhibited to desired levels and resists reversion to hexavalent chromium form over time. The resultant material, contaminated soil and/or waste after stabilization and reversion control is deemed suitable for on-site reuse, off-site reuse or disposal as RCRA non-hazardous waste.

Abstract: The invention pertains to a method for reducing the leaching of heavy metals from air particulate emissions. The method includes contacting the heavy metal particulate with a water and complexing agent which converts the molecular form of the particulate to a less soluble and less bioavailable form prior to collection and release to the environment. This method eliminates the need to remove or treat soils and environments exposed to particulate deposition and greatly reduces the environmental and health risks associated with the deposition of heavy metal particulate in the open environment as well as at controlled discharge areas.

Abstract: This invention provides a method for stabilization and treatment of heavy metal bearing materials and wastes subject to acid leaching tests or leach conditions and odor limits by addition of acid semi-soluble DiCalcium Phosphate DiHydrate such that the leaching potential is inhibited to desired levels and odors are reduced to desired levels and the material or waste is free flowing, more permeable, less weight and permits immediate handling and disposal or reuse. The resultant material or waste after stabilization is deemed suitable for on-site reuse, off-site reuse or disposal as RCRA non-hazardous waste.

Abstract: This invention provides a method for stabilization of heavy metal bearing materials and wastes subject to acid leaching tests or leach conditions by addition of acid semi-soluble DiCalcium Phosphate DiHydrate such that the leaching potential is inhibited to desired levels and the material or waste is free flowing, more permeable, less weight and permits immediate handling and disposal or reuse. The resultant material or waste after stabilization is deemed suitable for on-site reuse, off-site reuse or disposal as RCRA non-hazardous waste.

Abstract: This invention provides a method for stabilization of lead smelter slag and matte subject to acid and water leaching tests or leach conditions by addition of stabilizing agents into the smelter feed such that leaching of lead is inhibited to desired levels. The resultant waste after stabilization is deemed suitable for on-site reuse, off-site reuse or disposal as RCRA non-hazardous waste.

Abstract: The invention pertains to a method for reducing the leaching of heavy metals from air, water and wastewater particulate emissions. The method includes contacting the heavy metal particulate with a complexing agent which converts the molecular form of the particulate to a less soluble and less bioavailable form prior to collection and release to the environment. This method eliminates the need to remove or treat soils and environments exposed to particulate deposition and greatly reduces the environmental and health risks associated with the deposition of heavy metal particulate in the open environment as well as at controlled discharge areas.

Abstract: This invention provides a method for chemical stabilization of combined heavy metal 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. The resultant material or waste after stabilization is deemed suitable for on-site reuse, off-site reuse or disposal as RCRA non-hazardous waste.

Abstract: This invention provides a method for chemical stabilization of heavy metal bearing materials and wastes while minimizing fluoride solubility 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. The resultant material or waste after stabilization is deemed suitable for on-site reuse, off-site reuse or disposal as non-hazardous waste.

Abstract: This invention provides a method for chemical stabilization of selenium bearing materials and wastes subject to acid and water leaching tests or leach conditions by addition of water and selenium stabilizing agents such that the leaching potential is inhibited to desired levels. The resultant material or waste after stabilization is deemed suitable for on-site reuse, off-site reuse or disposal as RCRA non-hazardous waste.

Abstract: This invention provides a method for chemical stabilization of selenium bearing materials and wastes subject to acid and water leaching tests or leach conditions by addition of selenium stabilizing agents such that the leaching potential is inhibited to desired levels. The resultant material or waste after stabilization is deemed suitable for on-site reuse, off-site reuse or disposal as RCRA non-hazardous waste.

Abstract: The invention pertains to a method for reducing the leaching of heavy metals from air, water and wastewater particulate emissions. The method includes contacting the heavy metal particulate with a complexing agent which converts the molecular form of the particulate to a less soluble and less bioavailable form prior to release to the environment. This method eliminates the need to remove or treat soils and environments exposed to particulate deposition and greatly reduces the environmental and health risks associated with the deposition of heavy metal particulate in the open environment as well as at controlled discharge areas.

Abstract: Heavy metal bearing products during production, processing and/or handling, and/or in landfills, storage or retention areas are stabilized prior to the generation or management as a waste by applying heavy metal stabilizing agents into the product stream thus avoiding complex and costly processing and treatment of waste under hazardous waste regulations.