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| Number | Title | Issue Date |
| 7494583 | Electrode with surface comprising oxides of titanium and bismuth and water purification process using this electrode An electrode having a valve metal substrate and an electrocatalytic surface composition comprising titanium dioxide doped with bismuth is provided, and an electrolytic water purification process utilizing this electrode, wherein organic substances dissolved or dispe... | 02/24/2009 |
| 7378005 | Electrode for electrolysis and method of manufacturing electrode for electrolysis An object is to provide an electrode for electrolysis which is preferable in generation of ozone water usable in cleaning and sterilizing of water and sewage, or cleaning in a semiconductor device manufacturing process by an electrolysis process, and a method of man... | 05/27/2008 |
| 7326330 | Method and apparatus for scale and biofilm control Method and apparatus for electrolytically controlling the formation of scale and biofilm in water purification and other systems. An anode is deposited on or disposed on or adjacent to a surface, such as that of a quartz UV tube, providing a low pH environment which... | 02/05/2008 |
| 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 coating layer of an electrochemically active coating. The electrode ... | 07/24/2007 |
| 7241373 | Nitrogen treating method There is provided a nitrogen treating method capable of treating nitrogen compounds efficiently. The method is a nitrogen treating method of treating nitrogen compounds in for-treatment water by electrolysis and performs a first treating step of producing ammonia fr... | 07/10/2007 |
| 7156962 | Electrolyzing electrode and production method therefor and electrolysis method using electrolyzing electrode and electrolysis solution producing device There are provided an electrode for electrolysis which takes into consideration safety to human bodies and environmental pollution upon disposal of the electrode, produces ozone with high efficiency and has excellent durability, a production process of the electrode... | 01/02/2007 |
| 6821403 | Method and device for cleaning and disinfecting treatment of water Method for cleaning and disinfecting treatment of water, during which the water is exposed to at least one electric field, whereby the electric field is a low-current field with pulsating direct voltage. Device for realization of the method which includes a source o... | 11/23/2004 |
| 6811660 | Apparatus for purifying water containing dissolved organic matters and trace harmful substances Various kinds of wastewater and water such as methane fermentation digestion liquids, domestic wastewater, sewage, service water, culture pond water, wastewater defined by an active sludge law and wastewater from food industries are decomposed, cleaned and treated w... | 11/02/2004 |
| 6802956 | Electrolytic treatment of aqueous media A variety of pollutants and other contaminants may be removed from a variety of aqueous media using electrolytic treatments. The treatment includes inserting an anode and a cathode into the medium undergoing treatment, and applying a high current and voltage to the ... | 10/12/2004 |
| 6673229 | Electrochemical apparatus and process for purification of fluids The invention relates to an apparatus for purifying fluids comprising at least one electrochemical cell having a cathode (3), an anode (5) and an electrolyte (7), said cathode (3) comprising a metal complex, ML, where M represents a metal and L represents... | 01/06/2004 |
| 6547951 | Method and apparatus for treatment of organic matter-containing wastewater Disclosed is a novel method for treatment of wastewater containing organic contaminant materials by oxidatively decomposing the contaminant materials by a radical reaction involving hydroxyl radicals. The method comprises passing the wastewater through a ... | 04/15/2003 |
| 6531050 | Water purification process A process for removing nitrate ions from an aqueous solution thereof which comprises passing the solution through an electrochemical cell comprising at least one anode and at least one cathode and passing a current therebetween, wherein the cathode surfac... | 03/11/2003 |
| 6517699 | Method for producing polysulfides by means of electrolytic oxidation The present invention has an object to obtain a cooking liquor containing polysulfide-sulfur at a high concentration by minimizing by-production of thiosulfate ions. The present invention is a method for producing polysulfides, which comprises introducing... | 02/11/2003 |
| 6280637 | Treatment of liquid waste An electrocatalytic process for treating liquid waste material containing at least one environment-polluting substance, comprising causing the liquid waste material to be treated to pass between and to contact at least one pair of spaced apart electrodes,... | 08/28/2001 |
| 6238546 | Electrochemical treatment of effluent water An apparatus (200) for the treatment of effluent including a chamber (210) having an inlet (212) and an outlet (252), a plurality of plate-type electrodes (211) extending vertically in the chamber (210), and an electrical supply connected to the plurality... | 05/29/2001 |
| 6235189 | Method of supplying dissolved carbon dioxide to plants in an aqueous medium The invention provides a method of supplying dissolved carbon dioxide to plants in an aqueous medium characterized by electrolyzing the water in the aqueous medium by electrodes disposed in the aqueous medium and supplied with electric current. At least o... | 05/22/2001 |
| 6224744 | Electrolytic purification of contaminated waters by using oxygen diffusion cathodes The process comprises the oxidation, in an electrolytic cell provided with at least one anodes of pollutants which contaminate wastewaters, and is characterized in that oxygen is diffused in the electrolytic cell cathode or cathodes subjected to a voltage... | 05/01/2001 |
| 6207033 | Process and apparatus for regeneration of chromium plating bath A process for the regeneration of a plating bath comprising trivalent chromium involves the use of platinum anode and a copper cathode wherein the anode to cathode ratio is greater than 2:1 upon passage of a charge having a current density of at least 10 ... | 03/27/2001 |
| 6207060 | Method for treating water to be provided to an animal The inventive method assures the retention of calcium in drinking water provided to an animal by suppling water to a water feed line which is connected to a drinking device, oxidizing the water to retain calcium in the water in solution, ionizing the wate... | 03/27/2001 |
| 6204428 | Electrochemical membrane incinerator Electrochemical incineration of p-benzoquinone was evaluated as a model for the mineralization of carbon in toxic aromatic compounds. A Ti or Pt anode was coated with a film of the oxides of Ti, Ru, Sn and Sb. This quaternary metal oxide film was stable; ... | 03/20/2001 |
| 6190531 | Concentration and removal of tritium and/or deuterium from water contaminated with tritium and/or deuterium Concentration of tritium and/or deuterium that is a contaminant in H2 O, followed by separation of the concentrate from the H2 O. Employed are certain metal oxo complexes, preferably with a metal from Group VIII. For instance, [Ru | 02/20/2001 |
| 6017430 | Cathode for use in electrolytic cell A cathode wherein the electrocatalytically-active outer layer is of substantially uniform thickness and has contours which are at least substantially the same as the contours of the substrate immediately underlying it. The electrode may be prepared by dep... | 01/25/2000 |
| 5954939 | Electrolyzing apparatus and electrolyzing method for electrolyzing flowing water containing chlorine ions An electrolyzing apparatus for flowing water containing chlorine ions has an electrolytic cell provided with at least one pair of electrodes, a passage formed between the electrodes, an inlet port and an outlet port communicating the passage, and a power ... | 09/21/1999 |
| 5897765 | Electrochemical treatment method and device for softening water A method and a device for electrochemically treating water to reduce its degree of hardness, wherein the water to be treated is electrolyzed between an anode (5) and a cathode (7, 7') connected to the positive (B) and negative (A) terminals respectively o... | 04/27/1999 |
| 5858203 | Method and device for treating a contaminated slurry The invention relates to a method for treating a contaminated slurry comprising subjecting the slurry to a treatment wherein contamination is transferred from a substantially solid phase of the slurry to a substantially liquid phase of the slurry.... | 01/12/1999 |
| 5725751 | Process for the electro-oxidation of photographic solutions The invention concerns a process and a device for the treatment by electrolysis of used photographic solutions containing developers in an electrolytic cell comprising at least one platinum anode. The invention enables the corrosion of the platinum anode ... | 03/10/1998 |
| 5662789 | Removal of organics from aqueous solutions A process is described for electrochemically "collecting" certain organic compounds from aqueous solutions in an immobilized and concentrated manner conducive to subsequent destruction. The method is applicable for organic compounds amenable to electroche... | 09/02/1997 |
| 5653861 | Electrochemical process The invention relates to a method of producing pulp comprising a step of forming green liquor containing alkali metal sulfide and alkali metal carbonate. The method further comprises a step of electrochemically treating the green liquor to oxidize at leas... | 08/05/1997 |
| 5624545 | Production of polysulphide by electrolysis of white liquor containing sulphide Sulphide-containing white liquor is treated in a continuously operating electrolytic cell having separate anode and cathode compartments separated by a partially permeable barrier. White liquor is introduced into the anode compartment of the cell, and an ... | 04/29/1997 |
| 5587064 | Waste water purification process and apparatus For the purification of heavy metal-containing wastewater, a process according to the invention deposits heavy metal deposits on a cathode or cathodes which are mechanically removed. For this purpose the invention provides an apparatus having a device for... | 12/24/1996 |
| 5510009 | Electrolyzed water producing method and apparatus In a batch type electrolyzed water producing method, a first run of electrolysis is carried out, and electrolyzed water is discharged. Thereafter, before a next run of electrolysis is carried out, the polarity of a DC power source connected to the electro... | 04/23/1996 |
| 5480563 | Method for removing electrostatic charge from high resistivity liquid There are provided a method and an apparatus for removing electrostatic charges from high resistivity liquid. An insulating film is formed on the surface of a conductive element which is in contact with the high resistivity liquid wherein the insulating f... | 01/02/1996 |
| 5399247 | Method of electrolysis employing a doped diamond anode to oxidize solutes in wastewater A method of treating a solute in a liquid solution in order to render the solution more acceptable for discharge into the environment, comprises electrolyzing the solution with an anode comprising electrically conductive crystalline doped diamond to there... | 03/21/1995 |
| 5395492 | Apparatus for the sterilization of water An apparatus for sterilizing water by anodic oxidation. A reactor contains a plurality of anodes (3) and cathodes (4) arranged as parallel plates within the reactor. The anodes and cathodes are arranged in series within four modules (2). Each module inclu... | 03/07/1995 |
| 5368703 | Method for arsenic removal from wastewater A process and apparatus for removing arsenic from aqueous media is described. The process in general utilizes ferrous ion provided by an electrochemical cell which is added to the aqueous media in a first step, followed by mild oxidizing conditions genera... | 11/29/1994 |
| 5364509 | Wastewater treatment Wastewater, particularly black and gray water, produced in macerating human waste, is now treated to provide reduced total suspended solids. The wastewater includes a liquid media comprising salt-containing substance such as brine or seawater. The wastewa... | 11/15/1994 |
| 5364508 | Electrochemical method and device for generating hydroxyl free radicals and oxidizing chemical substances dissolved in water This invention provides electrochemical methods for producing hydroxyl free radicals and decomposing by oxidation chemical substances dissolved in water. It utilizes a novel electrode which is capable of operation at sufficiently positive anodic potential... | 11/15/1994 |
| 5360522 | Biocatalyst-immobilized electrode and method for treatment of water by use of the electrode An electrode consists of a cathode matrix material and a biocatalyst immobilized on the matrix material. A water under treatment is treated by disposing the electrode as a cathode and an anode opposed thereto in the water, and applying an electric current... | 11/01/1994 |
| 5250162 | Method of reducing Ti(IV) to Ti(III) in acid solution A method of reducing Ti(IV) to Ti(III) in which the Ti(IV) in acid solution is fed to an electrochemical cell having a semi-hydrophobic gas diffusion anode to which hydrogen gas is supplied. A current is passed through the cell to effect the electrochemic... | 10/05/1993 |
| 5217587 | Electrodes An electrode used in electrochemical deionization comprises a current feeder disposed asymmetrically in an ion exchange material bonded into a coherant structure i.e. more of the ion exchange material adheres to one side of the current feeder than to the ... | 06/08/1993 |
