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7482384 |
Iron composite particles for purifying soil or ground water, process for producing the same, purifying agent containing the same, process for producing the purifying agent and method for purifying soil or ground water
Iron composite particles for purifying soil or ground water, comprise α-Fe and magnetite, and having a ratio of a diffraction intensity D 110 of (110) plane of α-Fe to a sum of a diffraction...
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7351355 |
Purifying agent for purifying soil or ground water, process for producing the same, and method for purifying soil or ground water using the same
A purifying agent for purifying soil or ground water which comprises a water suspension containing iron composite particles comprising α-Fe and magnetite, and having an average particle diameter...
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7037946 |
Zero-valent metal emulsion for reductive dehalogenation of DNAPLs
A zero-valent metal emulsion is used to dehalogenate solvents, such as pooled dense non-aqueous phase liquids (DNAPLs), including trichloroethylene (TCE). The zero-valent metal emulsion contains...
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6926878 |
Method for removing toxic substances in water
Arsenic and TOC are removed from drinking water or wastewaters by use of finely-divided metallic iron in the presence of powered elemental sulfur or other sulfur compounds such as manganese...
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6669853 |
Composition for removing dissolved oxygen from a fluid
This invention relates to compositions, which are useful in removing dissolved oxygen from a fluid stream, preferably an aqueous stream. The compositions comprise blend of an oxime and a primary...
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6402984 |
Composition for preventing corrosion using a sulfite-based oxygen scavenger
The invention effectively prevents occurrence of corrosion in water tubes or the like of boilers. The invention provides a method for operating a boiler, including regulating a concentration of...
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6391256 |
Dissolved oxygen removal method using activated carbon fiber and apparatus thereof
A dissolved oxygen removal method using an activated carbon fiber catalyst thereof which includes the steps of a reducing agent injection step for injecting a reducing agent into the water, a...
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6350410 |
Method and composition for inhibiting biological fouling in an irrigation system
The present invention provides a method and composition for inhibiting biological fouling in an irrigation system. According to the invention, an effective amount of active zinc is added to...
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6221262 |
Ballast water de-toxification treatment system for ships
Method for reducing the number of viable organisms present in ship ballast water wherein the ballast water is treated so as to reduce the concentration of dissolved oxygen and/or carbon dioxide to...
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6136219 |
Composition for water clarification
The composition for clarifying a body of water comprises at least an anionic polyacrylamide, aluminum chloral hydrate or aluminum oxide and citric acid combined in amounts sufficient to produce a...
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6080332 |
Procedure for the anti-scaler production for coating the polymerizing reactor and respective resultant product
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6056875 |
Shower filter media
A filtering material for filtering hot water in a shower utilizes ceramic-type calcium sulfite beads, made from a ceramic binder and calcium sulfite, and a copper-zinc media, with the ceramic-type...
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5965094 |
Polymerization process with anti-scaling agents
According to the invention, there are provided a novel process for preparing an anti-scaling coating on the walls of a polymerization vessel by using aromatic compounds reacted with sodium...
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5597510 |
Coagulants containing basic aluminum polychloride or polychlorosulfatean iron compound, and an alkali or alkyline earth metall halide
Coagulant compositions, advantageously solvent (water) solution thereof, well suited for the treatment/purification of impure aqueous media, e.g., surface waters, wastewaters, effluents, etc., via...
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5512200 |
Low pH Acidic Compositions
Low pH acidic compositions for uses related generally to chemical, pharmaceutical and cosmetic agents and more particularly, but not limited to, used as bactericides, fungicides, germicides and...
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5397499 |
Alkali-ionization and oxidation inhibiting composition
The present invention relates to a material for the purification of fluids. More particularly, the present invention relates to a material for flocculating and separating organic substances or...
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5147604 |
Dioxo-aromatic compounds as oxygen scavengers
A method is disclosed for reducing the oxygen content of water using a hydrazine-free dioxo aromatic compound or organically-substituted derivative thereof.
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5082599 |
2-methyl- and 2-hydroxymethyl-serine-N,N-diacetic acid and derivatives thereof
2-Methyl- and 2-hydroxymethyl-serine-N,N-diacetic acid and derivatives thereof of the general formula I ##STR1## in which X denotes hydrogen, alkali metal or ammonium which may or may not be...
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4929364 |
Amine/gallic acid blends as oxygen scavengers
An aqueous concentrate useful for treating boiler waters to scavenge oxygen therefrom which contains at least 0.3% by weight of either gallic acid or propyl gallate. This aqueous concentrate has a...
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4895703 |
Trihydroxybenzene boiler corrosion inhibitor compositions and method
A method for inhibiting corrosion due to dissolved oxygen wherein trihydroxybenzene compounds, alone or in combination with conventional oxygen scavengers, preferably hydroquinone, are added to...
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4891141 |
Oxygen scavenger for boiler water and method of use
An oxygen scavenger for boiler water includes ascorbic acid neutralized with diethylaminoethanol. The diethylaminoethanol provides condensate treatment for the long and short steam lines and...
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4874541 |
All-in-one boiler water treatment composition
An all in one boiler water treatment composition includes an oxygen scavenging system, an alkalinity control agent such as sodium carbonate, diethylaminoethanol as a condensate treatment, a polymer...
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4851130 |
Oxygen removal with carbon catalyzed erythorbate or ascorbate
When an aqueous system containing dissolved oxygen and erythorbate or ascorbate is passed through an activated carbon bed, the oxygen is removed at ambient temperatures. This method of oxygen...
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4765921 |
Acid composition with high concentrations of active materials for the treatment of water and/or cleaning installations containing same
Acid compositions with high concentrations of active ingredients intended for the treatment of industrial or domestic waters and for cleaning the corresponding industrial or sanitary installations,...
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4731124 |
Application technique for the descaling of surfaces
A method of applying a descaling reagent comprising a one-electron reducing agent which is a low oxidation state transition metal ion in combination with a complexing agent to a surface to be...
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4681737 |
Stabilized sodium erythorbate boiler corrosion inhibitor compositions and methods
A method of inhibiting corrosion due to dissolved oxygen is disclosed, whereby chelant-stabilized sodium erythorbate, alone or in combination with conventional corrosion inhibitors, is added to...
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4681697 |
Process for producing solid aluminum chloride compositions
A process for producing a solid, cold-water soluble, sulfate containing aluminum chloride composition suitable for use as a waste water clarifying agent comprising introducing alkali aluminate,...
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4676910 |
Means of controlling precipitation of Na.sub.2 SO.sub.4 from solutions of NaHSO.sub.3 oxygen scavengers
Concentrated solutions of sodium sulfite and related compounds can be inhibited against sodium sulfate precipitation by substituting potassium for a portion of the sodium contained in such...
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4626411 |
Composition and method for deoxygenation
A composition containing a hydroxylamine compound; a quinone, a dihydroxybenzene, a diaminobenzene, or an aminohydroxybenzene compound; and a neutralizing amine is an excellent oxygen scavenger and...
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4549968 |
Method of utilizing improved stability oxygen scavenger compositions
Stable oxygen scavenger compositions adapted for storage without resulting in substantial sludge formation and oxygen scavenging methods of using the compositions are disclosed. The compositions...
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4487708 |
Hydroquinone oxygen scavenger for use in aqueous mediums
An improved oxygen scavenger for aqueous mediums is disclosed which comprises hydrazine-free solution of hydroquinone and mu-amine.
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4479917 |
Use of aminoguanidine compounds as oxygen-scavenging and corrosion-inhibiting agents
An oxygen-scavenging and corrosion-inhibiting agent for fluidic systems comprising an aminoguanidine compound selected from the formula: ##STR1## or a salt thereof, wherein R is selected from H or...
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4477364 |
Acidic glass cleaning composition
An acidic glass cleaning composition for removal of residue, deposits and impurities from glassware is provided, the improved acidic glass cleaning composition comprising from about 1 to about 15...
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4477285 |
Method for treating an oxidizable surface
A composition for use in treating surfaces susceptible of oxidation is disclosed herein which comprises the combination of a particulate abrasive material and a particulate, ascorbic-type reducing...
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4439339 |
Descaler composition and method
An aqueous acidizer composition and method of utilizing same in the removal of scale from fresh water production equipment such as desalinators or evaporators (watermakers) and distillation units...
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4435303 |
Descaling composition
The present invention is directed to a composition which includes an anionic fatty alcohol metal sulfate surfactant, a nonionic substituted poly (ethylene oxide) surfactant, an ethanolamine, zinc...
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4311599 |
Reduced methylene blue for oxygen removal
An improved method for scavenging dissolved oxygen from alkaline waters which comprises treating said waters with at least 10 ppm of methylene blue in its reduced or leuco base form.
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4289645 |
Hydroquinone and mu-amine compositions
An improved oxygen scavenger for aqueous mediums is disclosed which comprises hydrazine-free solution of hydroquinone and mu-amine. Representative examples of mu-amines include:...
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4282111 |
Hydroquinone as an oxygen scavenger in an aqueous medium
A method is disclosed for reducing the oxygen content of water using a hydrazine-free aqueous solution of hydroquinone.
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4279767 |
Use of improved hydroquinone oxygen scavenger in aqueous mediums
An improved oxygen scavenger for aqueous mediums is disclosed which comprises hydrazine-free solution of hydroquinone and mu-amine.
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4278635 |
Method for deoxygenation of water
A method for boiler water treatment to retard corrosion due to dissolved oxygen. Hydroquinone and certain related compounds are highly effective oxygen scavengers for use in boiler water and...
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4207201 |
Process for the manufacture of an aqueous iron (III)-chloride-sulfate solution
The application is concerned with a process for the manufacture of an aqueous iron (III)-chloride-sulfate solution by the oxidation of iron (II) sulfate with chlorine in aqueous solution.
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4082683 |
Cleaning of hard surfaces
An improved dithionite composition suitable for preparing stock solutions comprising a dithionite, e.g., sodium dithionite, and at least 5% by weight of a water-soluble sulphite, e.g., sodium...
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4019859 |
Triethylene tetramine stabilization of cobalt catalyzed sulfite solutions and use thereof in controlling oxygen corrosion in boiler water systems
A method of stabilizing aqueous solutions containing alkali metal sulfite or bisulfite and a catalyst therefor by incorporating in said solutions a stabilizing amount of triethylene tetramine. The...
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3983048 |
Composition for accelerating oxygen removal comprised of a mixture of aqueous hydrazine and an aryl amine compound
The rapid removal of dissolved oxygen from aqueous solutions is accomplished by the use of a composition comprised of a mixture of an aqueous solution of hydrazine and a catalytic proportion of an...
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3974039 |
Addition of finely divided BaSO.sub.4 particles to sea water for removal of scale components
A process of reclaiming drinking and industrial water from sea water, accing to which the sea water to be processed is subjected to a pretreatment, comprising filtering, acidifying and degassing...
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3957673 |
Scale inhibitor compositions for application onto metal substrates to be heated, and the method therefor
A scale inhibitor composition comprising Cr 2 O 3 , reducing agent, refractory or clay, SiO 2 and water glass, and a method of inhibiting the formation of scale on the surfaces of metal...
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3931038 |
Scale and corrosion inhibition for cooling water systems
A corrosion and scale inhibiting composition and process useful in recirculating cooling water systems consisting essentially of the following components calculated as weight percent: TBL ...
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3764548 |
OXYGEN SCAVENGER AND USE THEREOF
An oxygen scavenger composition characterized by (1) a catalyst comprising an anthraquinone disulfonic acid or salt thereof and a vanadate salt such as sodium vanadate and (2) a reducing agent such...
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3448119 |
PRODUCING TETRAMETHYLISOINDOLENINE BY HEATING ACETONYLACETONE IN AQUEOUS AMMONIUM SALT
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