The present invention relates to a method of making a mercury based compound, to a mercury based compound and to methods of using the mercury based compound and to uses of the mercury based compound.

The present invention relates to a method of making a mercury based compound, to a mercury based compound and to methods of using the mercury based compound and to uses of the mercury based compound.

Disclosed is a method for stabilizing metallic mercury in the form of mercury sulfide. The method includes the following steps: a) dispersing metallic mercury in a polysulfide aqueous solution so as to convert the metallic mercury into mercury sulfide; and b) separating the mercury sulfide.

Disclosed is a method for stabilizing metallic mercury in the form of mercury sulfide. The method includes the following steps: a) dispersing metallic mercury in a polysulfide aqueous solution so as to convert the metallic mercury into mercury sulfide; and b) separating the mercury sulfide.

The invention relates to sulfonated aminomethylated chelate resins, to a method for producing same, to the use thereof for obtaining and purifying metals, in particular rare earth metals, from aqueous solutions and organic liquids, and for producing highly pure silicon.

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 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.

Reclaiming useful products for commercial use and/or to be reused in an exhaust gas clean-up system. This is accomplished by subjecting the power plant exhaust gas to the various cleaning fluids followed by reclaiming the useful products from the exiting cleaning liquid. As the exhaust gas passes through a medium of water and calcium carbonate in a wet scrubber, the exiting cleaning fluid contains various calcium salts. Likewise, as the exhaust gas passes through a medium of calcium hydroxide and water other calcium salts are produced. By passing these respective calcium salts through solid-liquid centrifuge separators and other separating stirred tanks, various useful products are reclaimed and reused in the process or commercially sold. Some useful products are carbon dioxide, calcium sulfate, calcium carbonate, and mercuric salts.

Reclaiming useful products for commercial use and/or to be reused in an exhaust gas clean-up system. This is accomplished by subjecting the power plant exhaust gas to the various cleaning fluids followed by reclaiming the useful products from the exiting cleaning liquid. As the exhaust gas passes through a medium of water and calcium carbonate in a wet scrubber, the exiting cleaning fluid contains various calcium salts. Likewise, as the exhaust gas passes through a medium of calcium hydroxide and water other calcium salts are produced. By passing these respective calcium salts through solid-liquid centrifuge separators and other separating stirred tanks, various useful products are reclaimed and reused in the process or commercially sold. Some useful products are carbon dioxide, calcium sulfate, calcium carbonate, and mercuric salts.

A treatment process of a gas containing zero-valent mercury and a mercury separation system, by which the amount of an iodine compound used can be reduced when the zero-valent mercury is separated from the gas containing the zero-valent mercury by using the iodine compound. The process has a step of oxidizing the zero-valent mercury contained in the gas with a first liquid phase containing an alkali metal iodide, thereby obtaining a second liquid phase containing a divalent mercury ion and an iodide ion; a step of separating the divalent mercury ion as mercury sulfide by adjusting the pH of the second liquid phase; and a step of circulating a third liquid phase which is obtained by separating the mercury sulfide in the mercury separation step to use the third liquid phase as the first liquid phase in the mercury oxidation step.