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7604720 |
Process for the on-site production of chlorine and high strength sodium hypochlorite
The present invention relates to a novel economical on-site electrochemical based membrane cell based process with the capability of producing high strength sodium hypochlorite and/or elemental...
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7247229 |
Coatings for the inhibition of undesirable oxidation in an electrochemical cell
A process for electroplating of metal utilizing a valve metal electrode substrate containing multiple coating layers is disclosed. A top coating layer of a valve metal oxide is applied over a first...
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7244348 |
System and method for treatment of ballast water
A system and method for treating ballast water within an ocean going vessel by generating hypochlorite for treating the ballast water. The system comprises one or more hypochlorite electrolytic...
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7179363 |
Electrolytic process for generating chlorine dioxide
An electrolytic process for generating chlorine dioxide. An aqueous feed stream of an alkali metal chlorite solution is treated with chlorine gas or a mixture of hydrogen chloride and hypochlorous...
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7014770 |
Filtering method of a colloidal solution
A filtering method is directed to a wastewater of CMP process, which includes sub-micrometer particles suspended as colloid. The wastewater is filtered by a gel membrane formed on a surface of...
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6869518 |
Electrochemical generation of chlorine dioxide
A method of producing chlorine dioxide gas in an enclosed space including the steps of electrochemically generating chlorine dioxide gas in an electrochemical cell and transporting the chlorine...
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6805787 |
Method and system for generating hypochlorite
In a method for producing sodium hypochlorite, brine solution is piped from the brine tank to a first inlet in a first electrolyzer cell of an electrolyzer assembly while simultaneously piping...
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6719891 |
Point-of-use generation of chlorinated alkaline cleaning solutions by electrolysis
An on-site apparatus and method for preparing aqueous cleaning compositions, including an electrolytic cell for producing and dispensing chlorine and sodium hydroxide for use in various cleaning...
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6468412 |
Apparatus and method for venting hydrogen from an electrolytic cell
An apparatus and method for venting hydrogen from an electrolytic cell. A brine solution is supplied to an electrolytic cell where hypochlorite and hydrogen gas are produced. A non-combustible gas...
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6428677 |
Bromide removal
A chlorination system in which brine is converted to sodium hypochlorite by an electrolyser. Brine ( 1 ) fed to the electrolyser ( 3 ) is passed through a filter ( 2 ) which is capable of adsorbing...
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6333054 |
Topical, non-cytotoxic, antimicrobial hydrogel with thixotropic properties
A thixotropic, non-cytotoxic, topical hydrogel that contains a proven safe and effective, broad spectrum, antimicrobial agent based on a unique electrolytically derived sodium hypochlorite solution.
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6328875 |
Electrolytic apparatus, methods for purification of aqueous solutions and synthesis of chemicals
Electropurification of contaminated aqueous media, such as ground water and wastewater from industrial manufacturing facilities like paper mills, food processing plants and textile mills, is...
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6231747 |
Sterilizing wet wiper and apparatus for supplying sterilizing wet wipers
An absorbent base material is impregnated with electrolyzed water containing hypohalogenous acid which is obtained by supplying water containing at least halogen ions between an anode plate and...
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6207201 |
Sodium hypochlorite based disinfectant and sterilizer for medical-surgical instruments
A first embodiment of the present invention is directed to an aqueous disinfectant solution comprising an alkali metal or alkaline earth metal hypochlorite, an amount of base sufficient to raise...
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6126810 |
Generation of active chlorine in the presence of an organic load from sodium chloride in water
A recirculation system for electrochemically activated antimicrobial solutions returns antimicrobial solution which has been depleted of active antimicrobial species to a electrolytic cell for...
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6086746 |
Efficient inhibition of bacterial and algicidal activity in aqueous media
Operating efficiency of an electrobromination device providing disinfectant to an aqueous medium such as a swimming pool, spa, or water-cooled refrigeration unit is achieved by passing electric...
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5948230 |
Electrodialysis including filled cell electrodialysis (Electrodeionization)
Improved electrodialysis (ED) stacks are disclosed having one or more components selected from the group: a) cation exchange membranes having ion exchange groups predominantly sulfonic acid...
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5858201 |
Strong acid sterilizing liquid containing hypochlorous acid at a low concentration, method and apparatus for generating same, and apparatus for generating and dispensing same
A strong acid sterilizing liquid containing hypochlorous acid at a low concentration consists of electrolyzed salt water, wherein the pH of the liquid is 3 or less and the concentration of the...
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5667760 |
Methods for sweetening hydrocarbons
Sour natural gas, containing H 2 S and organic sulfide contaminants, is contacted with a sweetening composition comprising an aqueous solution of a substantially equimolar mixture of OCl and HO 2...
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5622613 |
Electrolytic method for manufacturing hypochlorite
The present invention provides a method for manufacturing hypochlorite efficiently, using an anode, which has a coating containing palladium oxide by 10 to 45 weight %, ruthenium oxide by 15 to 45...
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5616234 |
Method for producing chlorine or hypochlorite product
A process is described for the production of chlorine directly at the site where it is intended to be used and at the required rate. Hazards associated with the transport and storage of large...
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5534120 |
Membraneless water electrolyzer
A water electrolyzer for electrolyzing water to produce and recover acidic and/or alkaline water. The electrolyzer is of the membraneless laminar-flow type which is designed to electrolyze water...
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5338414 |
Electrolytic cell, electrolyzer and a method of performing electrolysis
The present invention relates to an electrolytic cell (1) comprising an anodic end wall (6) and a cathodic end wall (5) facing each other and supporting alternately arranged plate-shaped anodes (8)...
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5292410 |
Method for conversion of cellulosic agricultural wastes improving digestibility of grains for livestock feed
A method for improving the digestibility or crop residues and feed grains for livestock is disclosed in which such crop residues and grains are treated with an aqueous solution of chlorites at a pH...
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5292405 |
Electrolytic cell and method
An electrolysis cell provides a plurality of electrode stacks arranged electrically and mechanically back-to-back in a vertical orientation to develop an electrically neutral effluent. The...
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4783246 |
Bipolar rapid pass electrolytic hypochlorite generator
A hypochlorite generator is disclosed which can make use of multiple, flat, plate-like bipolar electrodes. The electrodes are housed in non-conductive casing members which can be outfitted with...
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4773975 |
Electrochemical removal of hypochlorites from chlorate cell liquors
Hypochlorite present in cell liquor or other aqueous chlorate solution is reduced electrolytically in the presence of dischromate using a high surface area cathode having a three-dimensional...
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4683039 |
Membrane pervaporation process
Chlorine dioxide is transferred by membrane pervaporation from one chamber filled with aqueous chlorine dioxide-generating reactants or other chlorine dioxide donor medium across a gas-permeable...
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4670114 |
Fine, uniform particles, and precipitation or depositing of particles from a solution
The precipitation or deposition of particles from a solution in a cell (61) which an electric field is applied between an anode (65,67,68) and a cathode (66), typically an electrolysis cell for the...
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4510026 |
Process for electrolysis of sea water
In the process of electrolysis of aqueous alkali metal halide solutions to produce hypohalite, halogen, halate and/or perhalate, the improvement comprising operating the electrolysis at least...
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4488945 |
Process for producing hypochlorite
In a process for the electrolysis of sea water to produce hypochlorite in at least one electrolysis cell equipped with anodes and cathodes forming interelectrodic spaces, the improvement comprising...
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4416744 |
Process of electrolytically producing oxyacids of chlorine
This invention relates to a process of producing oxyacids of chlorine or salts of such acids by an electrolysis of salt solutions which are contaminated with calcium and/or magnesium or of sea...
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4308124 |
Apparatus for electrolytic production of alkali metal hypohalite
A process and an apparatus for producing alkali metal hypohalite by passing an alkali metal brine solution through the anode compartment of an electrolytic cell in which the anode compartment and...
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4248690 |
Apparatus for production of sodium hypochlorite
Device or apparatus for electrolyzing natural and synthetic brines for producing hypochlorite includes an improved chassis structure supporting and cooperating with electrode plates to form a...
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4240884 |
Electrolytic production of alkali metal hypohalite
A process and an apparatus for producing alkali metal hypohalite by passing an alkali metal brine solution through the anode compartment of an electrolytic cell in which the anode compartment and...
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4238302 |
Electrolytic process of recovering oxyacids of chlorine or salts thereof
An improved process for recovering oxyacids of chlorine or salts of such acids by the electrolysis of sea water or of salt solutions contaminated by metal ions is disclosed wherein extensive...
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4218293 |
Electrochemical apparatus and process for manufacturing halates
An apparatus for the manufacture of halate, such as sodium chlorate, includes an electrolytic cell having a plurality of anodes and cathodes, clearance passageways between which have electrolyte,...
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4160716 |
Method for removing an entrained gas from a liquid medium
Disclosed is a cyclone for use in conjunction with electrolytic cells for separating a gas such as hydrogen from the electrolyte solution so as to significantly increase the efficiency of...
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4151052 |
Process for producing sodium hypochlorite
A process for producing sodium hypochlorite comprising electrolyzing an aqueous solution of sodium chloride as an electrolyte solution in a non-diaphragm electrolytic cell comprising at least one...
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4115217 |
Process for electrolytic preparation of chlorites
This invention relates to a process for the preparation of chlorite from chlorate.
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4111765 |
Silicon carbide-valve metal borides-carbon electrodes
Novel sintered electrodes consisting essentially of 40 to 90% by weight of at least one valve metal boride, 5 to 40% by weight of silicon carbide and 5 to 40% by weight of carbon useful for...
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4088550 |
Periodic removal of cathodic deposits by intermittent reversal of the polarity of the cathodes
Electrolysis of impure solutions containing hardness impurities such as calcium and magnesium causes deposits to form on the cathodes of such an electrolysis cell which rapidly reduces the...
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4085014 |
Elimination of impurities from sea water cell feed to prevent anode deposits
Electrolysis of impure saline solutions containing dissolved iron and manganese causes deposits to form on the anodes of such electrolysis cell which rapidly reduces the efficiency of the cell....
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4080278 |
Cathode for electrolytic cell
A cathode for an electrolytic cell, providing a low overvoltage on contact with the electrolyte, having at least one surface of a compound comprising (a) a metal of the group comprising nickel,...
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4046653 |
Novel electrolysis method and apparatus
A novel process for the preparation of an alkali metal halate by electrolysis of an aqueous alkali metal halide solution comprising passing an alkali metal halide solution upwardly through a...
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4009104 |
Marine sanitation method and device
Automatic marine sewage treatment through a pair of tanks with salt water based sewage fed to the first tank after removal of solids above a predetermined size. Circulation means responsive to...
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3986951 |
Chlorine-based bleachery effluent treatment
The method of treating a chlorine-based total bleachery effluent in which only a chlorine and sodium salts are used in the bleach sequence comprising the steps of adding aluminum ion to said...
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3962065 |
Chlorine gas or hypochlorite producing apparatus
Apparatus for producing a chlorine gas or a hypochlorite compound comprising a housing, a plurality of carbon electrodes arranged in series, with electrodes being spaced to form chambers between...
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3925174 |
Electrolytic method for the manufacture of hypochlorites
Hypochlorites, such as alkali metal hypochlorites, are made by electrolyzing brine in a cell having three or more compartments or zones therein, wherein anode and cathode compartments are separated...
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3915817 |
Method of maintaining cathodes of an electrolytic cell free of deposits
Cathodes of an electrolytic cell wherein a number of anodes and cathodes are positioned in spaced parallel relation in an electrolyte solution are maintained free of deposits which tend to form...
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