The disclosed invention relates to a method of disposing of mercury-containing wastewater containing mercury-complexing materials, comprising the steps of treating wastewater containing mercury ions with a strong oxidizing agent in a reaction chamber (2) to produce pretreated wastewater by removing an effluent stream of pretreated wastewater from the reaction chamber (2); and passing the effluent stream of pretreated wastewater through a column (6) packed with a mercury-selective adsorbent material to produce an effluent stream of wastewater having a reduced mercury content The adsorbent material is a porous resin having immobilized mercury-selective chelating groups bound thereto A particularly preferred adsorbent material is a crosslinked styrene-divinylbenzene copolymer having immobilized dithiocarbamate groups bound thereto

Combined oxidation and chelating adsorption system for removal of mercury from water

Metal ions may be scavenged from solution by means of a complexing agent comprising an inorganic substrate, such as a clay mineral, with covalent organic molecules, such as onium compounds, chemically bonded to the substrate, the covalent organic molecules containing free coordinating groups. The complexing agents are particularly useful in scavenging environmentally harmful metal ions such as mercury from industrial effluents.

Recovery of metals

A method is presented for recovering mercury from mercury-containing liquids in which the liquids are contacted with particles of metallic silver. The method produces highly purified liquids which may be employed in applications having a low mercury tolerance such as the production of food or drug products.

Process for removal and recovery of mercury from liquids

Composite articles are useful for separating mercury from fluids. The composite articles can be porous supports comprising an inert substrate having immobilized thereon finely divided gold optionally in combination with a tin salt coating. The porous support can be a particulate or porous fibrous webs. Alternatively, the composite articles can comprise a porous fibrous membrane having enmeshed therein the aforementioned porous supports which can be in particulate or fibrous forms. The method for separating elemental, ionic, or organic mercury in fluids comprises the step of contacting and passing a fluid containing mercury through a support comprising a porous, high surface area, inert substrate on which is immobilized finely divided elemental gold at a controlled rate for a time sufficient for the mercury to sorb to the elemental gold and to provide an immobilized gold-mercury amalgam on the support. If a tin salt also is immobilized on the inert substrate, mercury-tin salt can also be formed. In a further, and optional, step, elemental mercury can be removed from the support and optionally can be quantified.

Method for separating mercury from fluids using composite articles

An adsorption system, such as a composite drier-bed, having at least two distinct adsorption regions for simultaneously drying and removing metallic/inorganic and organic forms of mercury from a fluid including a container having an entrance area and an exit area; a distinct first region located within said container and proximal to said entrance area of a porous substrate having elemental silver associated therewith; and a distinct second region adjacent thereto of a porous substrate having elemental gold associated therewith. The first region substantially removes water and metallic forms of mercury and the second region substantially removes organic forms of mercury and residual water from said fluid. A method of removing both metallic and organic mercury simultaneously with water as well as a means for regenerating the drier-bed is also disclosed.

Method for simultaneously drying and removing metallic and organic mercury from fluids

1. A METHOD OF COLLECTING A LIQUID METAL SELECTED FROM THE GOUP CONSISTING OF MERCYRY, GALLIUM, ROSE''S METAL, AND WOOD''S METAL WHICH COMPRISES CONTACTING SAID LIQUID METAL WITH A SOLID, ABSORBENT CARRIER IMPREGNATED WITH A WATER-SOLUBLE SALT OF A METAL MORE NOBLE THAN SAID LIQUID METAL UNTIL SAID LIQUID METAL REACTS WITH SAID SALT OF THE MORE NOBLE METAL TO FORM A SALT OF SAID LIQUID METAL, AND THE FORMED SALT IS ABSORBED BY SAID CARRIER.

Sorption agent for nonsolid metals

Aus einer impraegnierten traegersubtanz bestehendes mittel zur sorption von fluessigen metallen und von metalldaempfen sowie verfahren zur rueckgewinnung der metalle und der impraegnierung

Hetz Wolfgang Dr

Papers

Sorption agent for nonsolid metals

Aus einer impraegnierten traegersubtanz bestehendes mittel zur sorption von fluessigen metallen und von metalldaempfen sowie verfahren zur rueckgewinnung der metalle und der impraegnierung