Methods of mercury decontamination are provided that include: contacting elemental mercury with a metal salt having a standard reduction potential sufficient to oxidize elemental mercury to an aqueous salt of mercury. In other aspects, methods of mercury decontamination are provided that include: contacting the metal surface with a solution comprising a metal salt having a standard reduction potential (E0) of greater than 0.85, thereby oxidizing a mercury contaminant to a soluble mercury salt.

Methods for the treatment of metallic particles such as heavy metal particles and objects contaminated with the metallic particles. For the treatment of objects contaminated with the metallic particles, a stabilizing composition may be applied to the object with or without a fixation agent. For the treatment of free-flowing metallic particles, an agglomeration agent may be used with or without a stabilizing agent.

Methods for the treatment of metallic particles such as heavy metal particles and objects contaminated with the metallic particles. For the treatment of objects contaminated with the metallic particles, a stabilizing composition may be applied to the object with or without a fixation agent. For the treatment of free-flowing metallic particles, an agglomeration agent may be used with or without a stabilizing agent.

Methods for the treatment of metallic particles such as heavy metal particles and objects contaminated with the metallic particles. For the treatment of objects contaminated with the metallic particles, a stabilizing composition may be applied to the object with or without a fixation agent. For the treatment of free-flowing metallic particles, an agglomeration agent may be used with or without a stabilizing agent.

Portable wet drilling waste treatment. In one example embodiment, a method for portable wet drilling waste treatment may include transporting a transportable frame, maneuvering an open end of a waste conduit, vacuuming air and the wet drilling waste, using a motor-driven vacuum, into the open end of the waste conduit, through the waste conduit, and into a cyclonic separator, separating the wet drilling waste from the air using the cyclonic separator, using a waste auger to transport the wet drilling waste, using a treatment material auger to transport a treatment material, operating the waste auger and the treatment material auger at coordinated rates to transport an effective ratio of the wet drilling waste to the treatment material, using a mixing auger to simultaneously transport the wet drilling waste and the treatment material, and operating the mixing auger at an effective rate resulting in a solidified treated material.

A treatment method for coal fly ash, and in particular sodic fly ash, comprises 1) contacting the coal fly ash with anhydrite, and 2) contacting the coal fly ash in the presence of water with at least one additive. The material obtained from the contacting steps (1) and (2) may be dried. The steps (1) and (2) may be carried simultaneously or sequentially. The additive may comprise at least one component selected from the group consisting of strontium-containing compounds, barium-containing compounds, dolomite, a dolomite derivative such as calcined or hydrated dolomite, water-soluble sources of silicate such as sodium or potassium silicate, iron-containing compounds, and any combinations thereof. A particularly preferred additive comprises sodium silicate. The method may be effective in reducing the sodium content in the fly ash (Na.sub.2O), reducing the alkalinity of the fly ash, and/or stabilizing at least one heavy metal such as selenium and/or arsenic to reduce their leachability.

One method of treating incinerated waste comprises: size separating at least some of the incinerated waste into a first undersize fraction comprising particles smaller than the first separation size and into a first oversize fraction comprising particles larger than the first separation size; size reducing at least some of the first oversize fraction; size separating at least some of the size-reduced first oversize fraction into a second undersize fraction comprising particles smaller than the second separation size and into a second oversize fraction comprising particles larger than the second separation size; combining at least some of the first undersize fraction and at least some of the second undersize fraction into a fine fraction; and extracting metal from at least some of the fine fraction. Another method of treating incinerated waste comprises extracting metal by froth flotation from at least some of the incinerated waste. Systems are also disclosed.

A treatment method for stabilizing at least a portion of at least one heavy metal contained in a sodic fly ash to reduce leachability, wherein the sodic fly ash is provided by a process whereby a sodium-based sorbent is injected in a combustion flue gas to remove pollutants therefrom. The treatment method comprises contacting the sodic fly ash with at least one water-soluble source of silicate and at least one additive comprising calcium and/or magnesium. The material obtained from the contacting step is preferably dried. The additive may be selected from the group consisting of lime kiln dust, fine limestone, quicklime, hydrated lime, dolomitic lime, dolomite, selectively calcined dolomite, hydrated dolomite, magnesium hydroxide, magnesium carbonate, magnesium oxide, and any mixture thereof. A particularly preferred additive comprises lime kiln dust and/or dolomitic lime. The heavy metal to be stabilized in the sodic fly ash may comprise selenium and/or arsenic.

The present invention is directed to a formulation and associated method for neutralizing one or more toxic chemical and/or materials including toxic industrial chemicals and toxic industrial materials, such as irritants, heavy metals, radioactive metals, acids and acid irritants, pesticides, and various agricultural chemicals, (collectively referred to as toxic chemical, materials, or simply toxins) as well as decontaminating surfaces that have come into contact with these agents. As a result, the formulation of the present invention can be used for neutralizing a broad spectrum of toxic chemicals and materials. In one embodiment, the active ingredient comprises 2, 3, butanedione monoxime (also known as diacetyl monoxime (DAM)), and alkali salts thereof such as potassium 2,3-butanedione monoxime (KBDO). The formulation also typically includes a carrier in which the active ingredient is dispersed. In one embodiment, the carrier comprises polyethylene glycol (PEG); monomethoxypolyethylene glycol (mPEG); and combinations and derivatives thereof.

The present invention is directed to a formulation and associated method for neutralizing one or more toxic chemical and/or materials including toxic industrial chemicals and toxic industrial materials, such as irritants, heavy metals, radioactive metals, acids and acid irritants, pesticides, and various agricultural chemicals, (collectively referred to as toxic chemical, materials, or simply toxins) as well as decontaminating surfaces that have come into contact with these agents. As a result, the formulation of the present invention can be used for neutralizing a broad spectrum of toxic chemicals and materials. In one embodiment, the active ingredient comprises 2,3, butanedione monoxime (also known as diacetyl monoxime (DAM)), and alkali salts thereof such as potassium 2,3-butanedione monoxime (KBDO). The formulation also typically includes a carrier in which the active ingredient is dispersed. In one embodiment, the carrier comprises polyethylene glycol (PEG); monomethoxypolyethylene glycol (mPEG); and combinations and derivatives thereof.