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5601722 |
Method for the preparation of an ion exchanger for cesium ions and method for the regeneration thereof
Proposed is a method for the preparation of an efficient ion exchanger useful for separation and recovery of cesium ions from an aqueous solution such as strongly acidic waste solutions containing...
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5597489 |
Method for removing contaminants from water
Contaminants in ground water, waste water and industrial effluents are removed using a contaminant removing media packed in a radial flow column. The radial flow column includes a fluid chamber...
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5595665 |
Process vessel head flush apparatus
A head flush apparatus for a pressure vessel uses an equalization chamber that channels the fluid generated by the head flush into a low volume chamber and withdraws fluid from the pressure vessel...
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5582737 |
Ion exchange and regeneration process for separation and removal of iron (III) ions from aqueous sulfuric acid metal ion-containing solutions
An ion exchange separation, recovery and regeneration process for the control of iron has been developed to replace the conventional bleed stream process used in copper electrowinning. The process...
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5578218 |
Brine treatment method
In a brine treatment method of removing sulfate ions from sulfate-ion contained brine, sulfate-ion contained brine is brought into dispersive contact with granular ion exchange resin carrying...
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5578217 |
Use a solvent impregnated crosslinked matrix for metal recovery
A composition comprising a crosslinked, highly porous body derived from a water-soluble hydrogel polymer, said porous body being characterized in that it has an open-celled three-dimensional...
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5547583 |
Method for separating contaminants from solution employing an organic-stabilized metal-hydroxy gel
Metals and organics are extracted from solution by co-precipitating them with a gel comprising aluminum hydroxide and a complexing agent such as EDTA. After the gel is processed to remove the...
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5544072 |
Method for regeneration of a water softener
A demand initiated method for regenerating a water softener which operates the softener ion exchange bed over a capacity range in which the resin is most efficiently restored by exposure to brine....
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5538645 |
Process for the removal of species containing metallic ions from effluents
A process for the removal of species containing metallic ions from effluents by yeast cell walls. The yeasts used are selected from Saccharomyces cerevisae, Saccharomyces uvarum and Saccharomyces...
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5538644 |
Apparatus and method for maintaining a stable bath for an autodeposition composition by periodically separating particular metal ions from the composition
An apparatus and method is provided for automated periodic removal of metal ions and contaminants from a chemical bath comprising a latex solution containing charged latex particles and having an...
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5536415 |
Removal of sulfate ions from saline solutions comprised thereof
Contaminating amounts of sulfate ions are removed from aqueous saline solutions comprised thereof by (i) contacting such saline solution with a zirconium compound, at an acidic pH, (ii) separating...
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5525237 |
Process for removing free and dissolved CO.sub.2 from aqueous solutions
The present invention provides a process and a system for removing inorganic carbon in the form of free and dissolved CO 2 from aqueous solutions. The process and the system contemplate the use of...
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5518626 |
Process employing thermally sterilizable aqueous polishing agents
The present invention provides a system and a process for removing contaminants such as CO 2 and mobile cations and anions from aqueous solutions. The system and the process contemplate the use of...
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5507951 |
Method for treating hexamine waste water
The present invention provides a method for treating hexamine waste water. The method includes subjecting the waste water to conditions sufficient to remove volatile constituents, passing the waste...
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5486292 |
Adsorbent biocatalyst porous beads
Highly porous, adsorbent biocatalyst beads of synthetic organic polymer have powdered activated carbon dispersed throughout the polymer and a biocatalyst, such as bacteria, located within...
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5484620 |
Method of manufacturing stabilizing and/or filtering aids for use in the processing of liquids, especially beverages
With the method of processing liquids, fine to very fine organic and/or inorganic granular particles are used, whereby pursuant to the invention the particles are mixed and compressed together in a...
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5451309 |
Ion exchange resin regeneration apparatus
An ion exchange resin regeneration apparatus. A nine compartment module has two end anode electrode compartments and a center cathode electrode compartment. These three compartments contain a...
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5451268 |
Process for the removal of sulfur from silver
A method of removing sulfur from a fluid including the steps of forming a container with a silver-containing mesh therein, passing the fluid into the container such that the fluid contacts at least...
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5451323 |
Method for recovering and reproducing tinning liquid
A method of recovering and reproducing a tinning liquid containing Fe ions and other detrimental cations by the steps of removing cations from the tinning liquid by passing the tinning liquid or a...
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5445742 |
Process for purifying halosilanes
A process for purifying halosilanes consisting of contacting a mixture comprising a halosilane and a hydrocarbon with an adsorbent selective for the hydrocarbon, thereby reducing the hydrocarbon...
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5443740 |
Process for the conditioning of ion exchange resins
For the conditioning of ion exchange resins, pure water is recirculated over a bed of the resin to be purified or of the resins to be purified. The pure water has a residual salt content of less...
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5443650 |
Process for softening a sugar-containing aquesous solution, such as sugar juice or molasses
The invention relates to a process for softening an aqueous sugar juice containing sugars and Ca 2 + and/or Mg 2 + ions, such as a sugar factory molasses by means of a cation exchange resin, in...
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5441689 |
Process of making regenerated cellulose articles
Aqueous solutions of an amine N-oxide such as N-methyl morpholine N-oxide used in the manufacture of regenerated cellulose can be purified by passage through a strongly basic anion-exchange resin....
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5429747 |
Method for treatment and decolorization of waste water from cosmetic manufacturing processes
The invention is a method for the treatment and decolorization of waste water incident to the manufacturing of cosmetic products that contains dyestuffs, fatty organic chemicals and other organic...
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5427689 |
Separation of polar substances from hydrocarbons
A process for separating polar substances (preferably water, alcohols, ethers, aldehydes, nitriles) from hydrocarbon fluids employs a sorbent comprising aluminum borate and zirconium borate....
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5423965 |
Process and device for demineralizing aqueous solutions using ion exchangers
An electrolytic process and apparatus are disclosed for regenerating separate bed ion exchange resins used to demineralize aqueous solutions, preferably softened water, without the use of...
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5395533 |
Method of removing particles having a size less than 10 μm from an aqueous solution
Provided is a method of removing particles having a size of less than 10 μm from an aqueous solution. The pH of the aqueous solution is first adjusted to be less than 9 and then the aqueous...
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5391300 |
Method for the removal of halogenated organic compounds from an environment
Polychlorinated biphenyl compounds are sorbed from aqueous solutions and mixtures by a variety of organic polymeric materials. The contaminant can be desorbed for further processing and destruction.
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5389261 |
Condensate polisher regenerant system
High pressure boiler condensate returns are polished and softened with a macroreticular cation exchange resin, and the resin is regenerated with a readily ionizable organic acid salt of a...
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5382366 |
Retardation installation with compressed air-diaphragm pump and stroke count device
In a retardation installation having a container holding the adsorber material capable of accepting acid, in particular adsorber resin, and a feed for a watery acid-salt-solution, for example from...
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5378370 |
Water treatment tank
A water treatment tank for use in a water treatment or softening system is disclosed which is operative in a treatment mode to receive untreated water through an inlet port and to pass treated...
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5368818 |
Monitoring and control system for selective regeneration of alkanolamine from cation ion exchange resin with sodium hydroxide
A cation exchange resin is regenerated to remove alkanolamine and alkali metal cations from the resin by eluting the resin with alkali metal hydroxide to selectively displace alkanolamine from the...
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5364527 |
Apparatus and process for treating water
An apparatus for removing cations/anions from liquids including a container provided with an anode mounted centrally in the container, a cathode surrounding the anode and a layer of ion exchange...
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5356611 |
Method of recovering iodine
A method for recovering iodine from a composition containing iodine and/or iodide in which any iodine present is first reduced to iodide, the iodide is then separated from solution by selective...
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5352345 |
Ion exchange resin regenerant waste recovery and recycling via bipolar membranes
The present invention provides an improved process for the regeneration of ion exchange gels and resins. Exhausted regenerating solutions from a either a cationic or anionic exchange column are...
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5336704 |
Process for insolubilizing absorbed metal ions
Metal cations absorbed within a hydrogel chelation polymer are insolubilized for safe disposal by treating the polymer with a precipitative anion such as carbonate, aluminate, hydroxide, phosphate,...
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5334316 |
Process of using polytetraalkylammonium and polytrialkylamine-containing ligands bonded to inorganic supports for removing and concentrating desired ions from solutions
A method for the removal and concentration of desired ions from a source solution which may contain larger concentrations of other ions including H + comprises bringing the source solution into...
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5316679 |
Elution of antimony from solid phases using concentrated sulfuric acid containing dilute hydrochloric acid
A method for the removal of antimony ions from solid phases which have an affinity for antimony ions comprises contacting the antimony containing solid phase with an aqueous eluent solution...
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5306399 |
Electrochemical exchange anions in decontamination solutions
Spent nuclear reactor coolant system decontamination solutions are first processed to remove the radioactive burden and to separate metallic impurities using cation exchange resins. The...
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5300230 |
Comprehensive water treatment system
A method is disclosed for the cyclic regeneration of a water softening system having a plurality of parallel water treatment units, N, each containing a water softening treatment bed which requires...
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5296204 |
Thallium extraction process
The invention relates to a process for extracting thallium present especially in aqueous wastes of industrial origin. The process, which makes it possible to extract and recover thallium from a...
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5294652 |
Process for recovering silver from photographic chemical effluent
A process for absorbing silver from photographic hypo solutions involves passing the hypo solution through a bed consisting of a multitude of a sponge product confined within a vessel. The sponge...
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5290458 |
Granular media regeneration process
Regeneration of a granular media is produced by mechanically forming a slurry of the media in a liquid and separation of the liquid from the granular media by rapidly rotating a separator element...
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5286464 |
Silica gel ion exchange resins for the selective removal of lead and cadmium ions from aqueous liquids
Lead and cadmium ions are selectively removed and reclaimed from aqueous liquids containing the ions of these metals using an ion exchange resin which comprises a modified silica gel.
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5281338 |
Method of decolorizing water
A method of decolorising water colored by humic or fulvic acid, such as moorland runoff water, which method comprises bringing the water into contact with chitin or alginic acid as adsorbent. The...
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5273660 |
Aminoalkylphosphonic acid containing ligands attached to solid supports for removal of metal ions
A method for the removal and concentration of desired ions such as Sb 3 +, Zr 4 +, Zn 2 +, Pu 4 +, Hf 4 +, Cu 2 +, Ni 2 +, Fe 3 +, Cd 2 +, Ag + , and Hg 2 + from a multiple ion source solution...
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5264132 |
Method of removing alkaline materials from waste water
Disclosed is a method for removing ammonia, organic amines and alkaline impurities from waste water which comprises using a partially spent ion exchange resin which no longer meets the purity...
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5264133 |
Removal of selenium from aqueous media
A process for the removal of soluble selenium from aqueous media comprising contacting the aqueous media with a porous support material having exchanged thereon metal ions selected from transition...
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5258123 |
Process for dewatering an aqueous solution containing solids using water-absorbent substances
A process for dewatering an aqueous fluid containing solids using water-absorbent substances is disclosed. A water-absorbent substance and a body to which the solids will adhere are added to the...
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5252221 |
Method for purifying blood plasma
A method for purifying blood plasma by treating said blood plasma with powdery or granular active carbon whereby the purification is carried out continuously by leading the blood plasma, having a...
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