Abstract: In an aspect, a system comprises a water stream in fluid communication with an electrolyzer; the electrolyzer comprising an anode and a cathode side chamber; a deep space oxygen radiator in fluid communication with the anode side chamber of the electrolyzer; a cryogenic heat exchanger comprising an oxygen storage tank in fluid communication with the deep space oxygen radiator; an electrochemical hydrogen compressor in fluid communication with the cathode side chamber; a hydrogen storage tank in fluid communication with the electrochemical hydrogen compressor via a cooled hydrogen stream; wherein at least a portion of the cooled hydrogen stream is in a first fluid communication with an expansion valve and the cryogenic heat exchanger; wherein the hydrogen storage tank is in a second fluid communication with the electrochemical hydrogen compressor via a warmed hydrogen stream; and wherein the cryogenic heat exchanger is in fluid communication with the warmed hydrogen stream.

Abstract: Provided are flow batteries that include a fluidic train within a dynamic fluidic network system which fluidic train is convertible between a first state and a second state, the first state the first state placing a main electrolyte source and a dynamic fluidic network, outside the fluidic train and an electrode region, into fluid communication with the electrode region and the second state placing the main electrolyte source and the dynamic fluidic network, outside the fluidic train and the electrode region, into fluid isolation from the electrode region and placing the electrode region into fluid communication with a sampling segment. Also provided are methods of operating flow batteries.

Abstract: A electrochemical direct heat to electricity converter having a low temperature membrane electrode assembly array and a high temperature membrane electrode assembly array is provided. Additional cells are provided in the low temperature membrane electrode assembly array, which causes an additional amount of the working fluid, namely hydrogen, to be pumped to the high pressure side of the converter. The additional pumped hydrogen compensates for the molecular hydrogen diffusion that occurs through the membranes of the membrane electrode assembly arrays. The MEA cells may be actuated independently by a controller to compensate for hydrogen diffusion.

Abstract: Provided is a battery pack including a busbar connection state protection circuit that detects an opening of a busbar when the busbar that connects between unit batteries is opened by damage and prevents a problem in that a reverse voltage generated when the busbar is damaged damages a battery management board. Provided is also a method for detecting whether or not a busbar is opened using the battery pack, capable of easily detecting whether or not the busbar is opened using the battery pack.

Abstract: An electrolyzing system is provided for producing higher quantities of electrolyzed waters within prescribed pH ranges for optimum usage and which can be operated for producing greater quantities of alkaline electrolyzed water than acidic electrolyzed water consistent with a users requirements. The system includes an electrolytic cartridge having cathode and anode cells each comprising a pair of electrodes disposed in laterally spaced coplanar relation to each other, with a respective ion permeable membrane in spaced relation to the pairs of electrodes. The cells are separated with a common separator plate that maintains the ion permeable membranes in parallel relation with the respective electrodes and which facilitates the communication of brine solution from a brine bath to both cells. The cells further can be operate with staggered input currents and the redirection of electrolyzed water between the cells for optimum control of pH levels of the resulting products.

Abstract: The present disclosure provides a system and a method for producing deuterium depleted water. The system includes a chlor-alkali electrolysis cell, a compressor, a cooling water scrubber tower, a hydrogen combustor, a boiler, a cooling condensation apparatus, a crude deuterium depleted water storage tank, a water purification apparatus and a water filling machinery.

Abstract: There are provided processes for preparing lithium hydroxide. The processes comprise submitting an aqueous composition comprising lithium sulfate and/or lithium bisulfate to a first electromembrane process that comprises a two-compartment membrane process under suitable conditions for conversion of the lithium sulfate and/or lithium bisulfate to lithium hydroxide, and obtaining a first lithium-reduced aqueous stream and a first lithium hydroxide-enriched aqueous stream; and submitting the first lithium-reduced aqueous stream to a second electromembrane process that comprises a three-compartment membrane process under suitable conditions to prepare at least a further portion of lithium hydroxide and obtaining a second lithium-reduced aqueous stream and a second lithium-hydroxide enriched aqueous stream. There are also provided systems for preparing lithium hydroxide.

Abstract: The present invention relates to a highly efficient sodium hypochlorite generation apparatus capable of decreasing disinfection by-products, which is a chlorine disinfection device for on-site generation and produces sodium hypochlorite solution by electrolyzing sodium chloride aqueous solution on site, thereby requiring no additional liquefied chlorine storage equipment or disaster prevention equipment and securing flexibility of installation and operation while not being regulated by a high-pressure gas safety control act.

Abstract: The recycling hydrogen generator comprises a chlorine filtration and safety feature system wherein alternative size and type housing compartments, anodes, cathodes and an attached vibration system recycle or remix electrolyte residue for use as new electrolyte and permit the free passage of hydrogen into the external storage tank with electric cut-off switch safety feature for control of the rate and amount of hydrogen produced for individual and home use, and wherein the breakable window safety feature instantly remixes said dangerous chlorine gases with said liquid electrolytic residue in case accident endangers the said housing.

Abstract: A method for purification of carbon dioxide from a mixture of gases is disclosed. The method generally includes steps (A) and (B). Step (A) may bubble the gases into a solution of an electrolyte and a catalyst in an electrochemical cell. The electrochemical cell may include an anode in a first cell compartment and a cathode in a second cell compartment. The cathode generally reduces the carbon dioxide into one or more compounds. The anode may oxidize at least one of the compounds into the carbon dioxide. Step (B) may separate the carbon dioxide from the solution.

Abstract: An electrolyzing system for electrolyzing a brine solution of water and an alkali salt to produce acidic electrolyzed water and alkaline electrolyzed water is provided. The system includes an internal chamber for receiving the brine solution and two electrolyzer cells immersed in a brine bath. Each electrolyzer cell includes an electrode, at least one ion permeable membrane supported relative to the electrode to define a space communicating between a fresh water supply and a chemical outlet into which brine enters only through the membrane. One of the electrodes is coupled to a positive charging electrical supply and the other to a negative charging electrical supply.

Abstract: An energy management system includes a control unit and an electrolysis system having an alkaline electrolysis unit and a PEM electrolysis unit. The control unit controls the electrolysis units independently of one another in such a way that a performance adjustment of an overall performance of the electrolysis system is particularly dynamic.

Abstract: Process for preparing an alkali metal from a salt of the alkali metal which is soluble in a solvent, including a first electrolysis, a concentration, and a second electrolysis. The first electrolysis produces a product mixture. This product mixture is then concentrated to give a largely solvent-free alkali metal (poly)sulfide melt. A second electrolysis at a temperature above the melting point of the alkali metal is then performed in a second electrolysis cell comprising an anode space and a cathode space, separated by a solid electrolyte which conducts alkali metal cations. The alkali metal (poly)sulfide melt from the concentration step is fed to the anode space. Sulfur is removed from the anode space and liquid alkali metal is removed from the cathode space.

Abstract: The present invention provides a method for the treatment of nitrogen-rich effluent and production of struvite comprising introducing the effluent in an electrolytic system and performing a first electrolytic treatment to the effluent in a first electrolytic reactor in order to organic matter that impact on nucleation of struvite, followed by a second electrolytic treatment in a second electrolytic reactor, thereby injecting Mg ions which react with NH4+ and orthophosphates from the effluent to form a struvite precipitate.

Abstract: An apparatus for removing sulfur from a hydrocarbon feed includes a cell having two compartments and a membrane separating the compartments, wherein one compartment is communicated with a hydrogen source and the other compartment is communicated with the hydrocarbon feed to be treated, wherein the membrane comprises a palladium membrane which is modified to have an additional amount of a mix of palladium and other metals (Ni, Ag, Co and Au) between about 4.62*10?3 and 1.62*10?2 g/cm2; and a power source connected across the hydrogen source compartment to generate a current across same, whereby atomic hydrogen is formed from the hydrogen source at a surface of the membrane and diffuses across the membrane to react with the hydrocarbon feed. A process using this apparatus is also provided.

Abstract: A membrane-based electrochemical cell produces a first anolyte solution and a membrane-less electrochemical cell produces a bleach solution such as from a brine solution. The first anolyte solution and bleach solution are combined to form a modified anolyte solution. A dual electrochemical cell device includes two segments, one having a membrane-based electrochemical cell and the other having a membrane-less electrochemical cell, separated by a partition, and secured together into a single, unitary structure.

Abstract: A membrane-based electrochemical cell produces a first anolyte solution and a membrane-less electrochemical cell processes the first anolyte solution to produce a modified anolyte solution.

Abstract: The present disclosure is a method and system for production of carboxylic based chemicals, including carboxylic acids and salts. A method for producing at oxalic acid may include receiving an anolyte feed at an anolyte region of an electrochemical cell including an anode and receiving a catholyte feed including carbon dioxide and an alkali metal hydroxide at a catholyte region of the electrochemical cell including a cathode. Method may include applying an electrical potential between the anode and cathode sufficient to reduce the carbon dioxide to at least one reduction product and converting the at least one reduction product and the alkali metal hydroxide to an alkali metal oxalate via a thermal reactor. The method may further include receiving the alkali metal oxalate at an electrochemical acidification electrolyzer and converting the alkali metal oxalate to oxalic acid at the electrochemical acidification electrolyzer.

Abstract: A method for producing hydrogen from organic material. Organic material and hydrogen-producing microorganisms are provided in a completely mixed bioreactor for breaking down the organic material into H2, CO2, fatty acids, and alcohols. H2, CO2, and a first liquid effluent are recovered from the completely mixed bioreactor. The first liquid effluent includes hydrogen-producing microorganisms, fatty acids, and alcohols. The first liquid effluent is provided into a gravity settler for separating the first liquid effluent into a concentrated biomass (including hydrogen-producing microorganisms) and a second liquid effluent (including at least a portion of the fatty acids and the alcohols). The concentrated biomass is provided into the completely mixed bioreactor. An input voltage is applied to at least one of the completely mixed bioreactor and the gravity settler for facilitating an electrohydrogenesis process therein.

Abstract: The subject of the invention is a method for reduction of the CO2 content of flue and atmospheric gases and equipment for application of the method. The characteristic of the solution according to the invention is, that “hydroxide” ionized water containing (OH?) ions of alkaline characteristics is used as reaction medium for binding carbon dioxide (CO2) gas, and carbon dioxide (CO2) gas gets into reaction with alkaline ionized water, and during the reaction from the carbon dioxide (CO2) gas and water, carbonate ion (CO32?) and hydrogencarbonate/bicarbonate (2HCO3?) are formed, and they leave for the outside atmosphere and/or outside water with the bound CO2 content in stable gas or liquid form.

Abstract: The present disclosure is a method and system for production of carboxylic based chemicals, including carboxylic acids and salts. A method for producing at oxalic acid may include receiving an anolyte feed at an anolyte region of an electrochemical cell including an anode and receiving a catholyte feed including carbon dioxide and an alkali metal hydroxide at a catholyte region of the electrochemical cell including a cathode. Method may include applying an electrical potential between the anode and cathode sufficient to reduce the carbon dioxide to at least one reduction product and converting the at least one reduction product and the alkali metal hydroxide to an alkali metal oxalate via a thermal reactor. The method may further include receiving the alkali metal oxalate at an electrochemical acidification electrolyzer and converting the alkali metal oxalate to oxalic acid at the electrochemical acidification electrolyzer.

Abstract: A production apparatus is provided for producing a near field optical head that includes, during its production process, a substrate, at least one protuberance extending from a surface of the substrate, an electrically conductive shielding film covering the protuberance and the substrate, and a parent film, as a mother material for an air bearing, covering the shielding film. The production apparatus has an etchant for etching the parent film and a container for storing the etchant and for containing the substrate, the shielding film, and the parent film so that the substrate, the shielding film, and the parent film are immersed in the etchant. At least one electrode is fixedly mounted in the container so as to be immersed in the etchant. A measuring device measures an electrical characteristic between the electrode and the shielding film.

Abstract: A method for producing fertilizers comprising feeding gaseous reactants comprising at least one nitrogen source and a source of hydrogen selected from the group consisting of a hydrogen-containing salt, a hydrogen-containing compound, and a hydrogen-containing gas to a reactor, the reactor including at least one reaction chamber, at least one anode, at least one cathode, and at least one electrolyte between each at least one anode and each at least one cathode, providing electricity to drive anodic and cathodic reactions, and producing a fertilizer having nitrogen by providing a nitrogen source of the at least one nitrogen source and at least one carbon source to the at least one cathode and a nitrogen source of the at least one nitrogen source to the at least one anode.

Abstract: In a method for reduction of a solid feedstock, such as a solid metal compound, in an electrolytic apparatus a portion of the feedstock is arranged in each of two or more electrolytic cells (50, 60, 70, 80). A molten salt is provided as an electrolyte in each cell. The molten salt is circulated from a molten salt reservoir (10) such that salt flows through each of the cells. Feedstock is reduced in each cell by applying a potential across electrodes in each cell, the potential being sufficient to cause reduction of the feedstock. The invention also provides an apparatus for implementing the method.

Abstract: A method of taking inoperative pot online using fuse in an aluminium manufacturing plant operating on electrolysis process is disclosed. The manufacturing plant comprises of plurality of electrolysis cells or pots connected in series. Some of the pots are kept off line during start up of the plant by shorting the risers of the non running pots to the cathode bus bar (31) by shorted joints (II). The method comprises, connecting fuse assemblies in parallel with the shorted joints; inserting insulating insert plates between the risers and the short circuit bus bars and securing the insulating insert plates to isolate the short circuit bus bars from the risers (14) such that the total rated current passes through the fuse assemblies. The fuse elements in the fuse assemblies melt within about 8 to 10 minutes, completely isolating the short circuit bus bars from the risers such that the risers now feed the current to the anode assemblies of the non running pot.

Abstract: A process for treating hydrocarbon feeds includes the steps of providing a hydrocarbon feed containing sulfur and/or metalloporphyrins; providing a cell having two compartments and a membrane separating the compartments; flowing a hydrogen source through one compartment; flowing the hydrocarbon feed through the other compartment; applying a current across the hydrogen source compartment whereby hydrogen diffuses through the membrane from the hydrogen source to the hydrocarbon feed, whereby the hydrogen reacts with sulfur and/or metalloporphyrins to form H2S and convert such metalloporphyrins into dissolved metals and a free metal porphyrin, and produce a treated hydrocarbon.

Abstract: High concentrations of hypochlorous acid can be produced from, most typically, brine using an system of simple design with minimum residual salt production, reduced power consumption, and at high operating efficiencies. This is accomplished by separating the system into two operations, each of which is preferably optimized. This process employs at least two electrochemical cells, the first of which has no separator between the anode and cathode and generates a high-strength hypochlorite solution. The hypochlorite is then diluted to a desired chlorine concentration and/or pH and fed into the anode compartment of a second electrochemical cell wherein the electrodes are separated by a barrier, such as, for example, a membrane or diaphragm. The separated cell produces a solution containing predominantly hypochlorous acid.

Abstract: There is disclosed an electrochemical conversion system (40) for energy management which includes multi-electrochemical cells. The system 40 includes a conduit system (41), an electrical system (42), first electrochemical cell (43), a second electrochemical cell (44), a third electrochemical cell (45), a first recuperative heat exchanger (RHX) (46), and a second recuperative heat exchanger (47). The conduit system, electrical system (42), heat exchangers, and electrochemical cells are all constructed and function in the same manner as previously described. The system (40) also includes an additional, second recuperative heat exchanger (47) (RHX) to thermally isolate the third electrochemical cell from the other two. As shown, the electrochemical cells are electrically and pneumatically connected in series so that the electrical current flow and the proton flow through the electrochemical cells are balanced.

Abstract: Method and apparatus for a low maintenance, high reliability on-site electrolytic generator incorporating automatic cell monitoring for contaminant film buildup, as well as automatically removing or cleaning the contaminant film. This method and apparatus preferably does not require human intervention to clean.

Abstract: A hydrogen generation apparatus is constituted of a treated-substance container, which has a hydrogen discharge port for activating a treated substance; and at least one plate-form activation structural body, which is provided within the treated-substance container vertically thereto. The plate-form activation structural body is a structural body that arranges particles composed of any of a single constituent element, which is selected from a group comprising silicon, titanium, nickel, and samarium, and fluorocarbon at positions that amplify unique wave energy in each the element and the fluorocarbon, and which structural body has an energy concentration field between the particles within the treated-substance container, wherein gases containing hydrogen are generated by any of the treated substance within the treated-substance container staying in and passing through the energy concentration field. The hydrogen generation apparatus can generate hydrogen with less energy and achieve space saving.

Abstract: A method of electrolytic synthesis comprises applying a potential between a first electrode and a second electrode. The first electrode is in contact with a first fluid stream in a channel, the second electrode is in contact with a second fluid stream in the channel, and the first steam and the second stream are in parallel laminar flow in the channel.

Abstract: Disclosed are methods and systems for generating hydrogen gas at pressures high enough to fill a hydrogen storage cylinder for stationary and transportation applications. The hydrogen output of an electrochemical hydrogen gas generating device is integrated with an electrochemical hydrogen compressor operating in a high-differential-pressure mode. The compressor brings the hydrogen produced by the gas generating device to the high pressure required to fill the storage cylinder.

Abstract: A method and apparatus for the electrochemical treatment of an aqueous solution in an electrolytic cell is described. Output solution having a predetermined level of available free chlorine is produced by applying a substantially constant current across the cell between an anode and a cathode while passing a substantially constant throughput of chloride ions through the cell.

Abstract: A system for generating and consuming borohydride ions comprising two electrochemical cells. At least one of the cells is configured for installation on a vehicle that is propelled by electricity.

Abstract: An exemplary embodiment of the regenerative electrochemical cell system comprises: a fuel cell module comprising a fuel cell oxygen inlet in fluid communication a water storage device, and a fuel cell hydrogen inlet in fluid communication with both an oxygen source and with a gaseous portion of an water phase separation device; an electrolysis module comprising an electrolysis water inlet in fluid communication with the water storage device via a fuel cell oxygen outlet, and an electrolysis water outlet in fluid communication with the fuel cell hydrogen.

Abstract: An electrochemical deposition system comprising a fixture adapted to selectively grasp and release an electrochemical process cell is provided. The system may include a lift/lower mechanism coupled to the fixture and adapted to automatically stop lowering the fixture at a process cell elevation, a rotation mechanism coupled to the fixture and adapted to automatically stop rotating the fixture when aligned with a process cell location and when aligned with a process cell exchange location. The fixture adapted to selectively grasp and release an object to be lifted may include a cam/follower coupling between a rotatable portion of the fixture and a gripping portion of the fixture. To grasp a process cell with the fixture, the rotating portion of the fixture may be rotated so as to retract the gripping portion of the fixture causing the gripping portion to close around the process cell.

Abstract: This invention discloses regeneration methods to remove carbon monoxide (CO) from reformate fuel using an adsorption and electro-catalytic oxidation (ECO) approach. One method of the invention comprises a first ECO cell and a second ECO cell, and the other method comprises a first ECO cell and a first charge storage device. Both methods eliminate the requirement of an external power supply that leads to higher cost, additional power consumption and more processor complexity for the CO removal processor.

Abstract: In one embodiment, the present invention relates to a method of making a catalytic film comprising: applying an electric current to an electrochemical cell comprising an anode, a cathode and a solution comprising a film forming compound and a nitrate ion source thereby forming the catalytic film.

Abstract: The present invention relates to an apparatus and a process for regenerating a used etchant solution, which solution contains a metal in divalent form. The apparatus includes a tank which is originally supplied with the etchant solution; a first electrolytic cell for converting solution from the tank to a solution containing a high fraction of a monovalent form of the metal; and a second electrolytic tank for plating metal from the solution containing a high fraction of the monovalent form of the metal. The details of the process of the present invention are set forth in the disclosure.

Abstract: An improved process is described for the recovery of copper from an aqueous feed solution using solvent extraction and electrowinning in which the electrowinning is conducted in a first step wherein the electrolyte is flowing perpendicular to the cathode surface without auxiliary mixing of the electrolyte between electrodes, and a second step wherein the electrolyte is flowing parallel to the cathode surface. In a second embodiment, solvent extraction of copper and solvent extraction of acid are conducted in alternate steps to allow more complete recovery of copper.