Patent application number | Description | Published |
20080233484 | Battery with Gelled Electrolyte - An electric device comprises a gelled acid electrolyte in complex with a lanthanide that forms a redox pair with a second element. Preferred electric devices include batteries, and especially primary batteries, while preferred acid electrolytes have a sulfonic acid group. Contemplated lanthanides especially include cerium, and preferred second elements particularly include zinc. Alternatively, contemplated electric devices may comprise a gelled electrolyte in which with a lanthanide forms a redox pair with zinc. | 09-25-2008 |
20090008333 | Perchlorate Destruction - Perchlorate is removed and effectively destroyed in devices and methods that employ a eluting solvent in which the anion of an acid solubilizes Ti (III), which may be electrochemically generated or added in situ. Using such solvents, destruction of perchlorate is unexpectedly and several orders of magnitude faster than using solvents without solubilizing acids. In most preferred aspects, the solubilizing acid is methane sulfonic acid and/or sulfamic acid, and Ti (III) is electrochemically generated. Perchlorate destruction will then result in formation of Ti (IV), which may be present in the eluent in a subsequent elution. | 01-08-2009 |
20090014337 | Electrochemical Nitrate Destruction - Devices and methods are presented for removal and destruction of nitrate from water using an ion exchange medium from which the nitrate is eluted using brine, and in which the so generated eluent is sequentially reduced and oxidized in distinct compartments to form nitrogen from nitrate and ammonia, respectively. In especially preferred devices and methods, the reduced and oxidized eluent is re-reduced to electrochemically destroy hypohalites formed during oxidation. Among other advantages, contemplated devices and methods allow nitrate destruction with minimal concomitant production of nitrite and hypohalites. | 01-15-2009 |
20090159459 | Electrochemical Recovery of Arsenic - Contemplated devices and methods for arsenic recovery employ a two-step process in which an arsenite and arsenate-containing solution is first subjected to a non-electrochemical reduction that reduces arsenate and arsenite. The arsenate-depleted arsenite-containing solution is the subjected to electrochemical reduction at alkaline pH using a cathode with a high-surface carbon portion. Most preferably, the treated solution is then used as eluent for an adsorbent that removed arsenate and arsenite from a water supply. | 06-25-2009 |
20100089763 | Devices and methods of copper recovery - Contemplated configurations and methods allow for effective removal of copper from aqueous media by selectively concentrating copper in a first stage, wherein competing metal ions are subjected to a redox reaction to thereby increase selective concentration. Copper is then plated in a flow through electrode from a relatively concentrated copper solution that is depleted from competing non-copper metals. In preferred aspects, the first stage provides a copper-depleted effluent that includes zinc and/or manganese for further recovery. | 04-15-2010 |
20110200508 | PROCESSES FOR PREPARING HIGHLY PURE LITHIUM CARBONATE AND OTHER HIGHLY PURE LITHIUM CONTAINING COMPOUNDS - The invention generally relates to methods of selectively removing lithium from various liquids, methods of producing high purity lithium carbonate, methods of producing high purity lithium hydroxide, and methods of regenerating resin. | 08-18-2011 |
20110274968 | TITANIUM COMPOSITE ELECTRODES AND METHODS THEREFORE - The present invention provides composite electrodes that comprise a titanium metal filler and a polymeric material. Advantageously the composite electrodes of the present invention do not suffer from the problems of carbon degradation, are thermally stable, are easily shaped, which demonstrate high power densities and which are relatively inexpensive to produce. | 11-10-2011 |
20120100056 | PROCESSES FOR PREPARING HIGHLY PURE LITHIUM CARBONATE AND OTHER HIGHLY PURE LITHIUM CONTAINING COMPOUNDS - The invention generally relates to methods of selectively removing lithium from various liquids, methods of producing high purity lithium carbonate, methods of producing high purity lithium hydroxide, and methods of regenerating resin. | 04-26-2012 |
20120107210 | PROCESSES FOR PREPARING HIGHLY PURE LITHIUM CARBONATE AND OTHER HIGHLY PURE LITHIUM CONTAINING COMPOUNDS - The invention generally relates to methods of selectively removing lithium from various liquids, methods of producing high purity lithium carbonate, methods of producing high purity lithium hydroxide, and methods of regenerating resin. | 05-03-2012 |
20130108781 | Methods for the Production of Cathode and Anode Powder Precursors | 05-02-2013 |
20130209336 | SELECTIVE RECOVERY OF MANGANESE, LEAD AND ZINC - This invention relates to a method for the selective recovery of manganese and zinc from brines that includes the steps of contacting a brine with an ionic liquid in order to selectively extract manganese and zinc from the brine into the ionic liquid; and treating the ionic liquid containing extracted manganese and zinc with an aqueous solution to selectively precipitate manganese, producing a manganese depleted, zinc rich ionic liquid. The method can further include the steps of treating the manganese depleted, zinc rich ionic liquid with an aqueous solution to selectively precipitate zinc. | 08-15-2013 |
20130236378 | Selective Recovery of Manganese and Zinc From Geothermal Brines - This invention relates to a method for the selective recovery of manganese and zinc from geothermal brines that includes the steps of removing silica and iron from the brine, oxidizing the manganese and zinc to form precipitates thereof, recovering the manganese and zinc precipitates, solubilizing the manganese and zinc precipitates, purifying the manganese and zinc, and forming a manganese precipitate, and recovering the zinc by electrochemical means. | 09-12-2013 |
20140037521 | Processes for Preparing Highly Pure Lithium Carbonate and Other Highly Pure Lithium Containing Compounds - The invention generally relates to methods of selectively removing lithium from various liquids, methods of producing high purity lithium carbonate, methods of producing high purity lithium hydroxide, and methods of regenerating resin. | 02-06-2014 |
20140054233 | Selective Removal of Silica from Silica Containing Brines - This invention relates to a method for selective removal of silica and silicon containing compounds from solutions that include silica and silicon containing compounds, including geothermal brines. | 02-27-2014 |
20140102946 | Lithium Extraction Composition and Method of Preparation Thereof - This invention relates to a particulate extraction material for the extraction of lithium from a geothermal brine or lithium containing solution. The particulate material includes an inorganic or polymer based substrate that includes a lithium aluminum intercalate layer applied to the exterior of the substrate, wherein the lithium aluminum intercalate layer is operable to capture lithium ions from solution. | 04-17-2014 |
20140165563 | Treated Brine Compositions With Reduced Concentrations of Potassium, Rubidium, and Cesium - This invention relates to treated geothermal brine compositions containing reduced concentrations of silica, iron, and potassium compared to the untreated brines. Exemplary compositions of the treated brine contain a concentration of silica ranging from about 0 mg/kg to about 15 mg/kg, a concentration of iron ranging from about 0 mg/kg to about 10 mg/kg, and a concentration of potassium ranging from about 300 mg/kg to about 8500 mg/kg. Other exemplary compositions of the treated brines also contain reduced concentrations of elements like rubidium, cesium, and lithium. | 06-19-2014 |
20140170041 | Methods for Removing Potassium, Rubidium, and Cesium, Selectively or in Combination, From Brines and Resulting Compositions Thereof - The invention generally relates to methods of removing potassium, rubidium, and/or cesium, selectively or in combination, from brines using tetrafluoroborates. Also disclosed are methods of producing potassium, rubidium, and/or cesium chlorides using ionic liquids and exchange media. This invention also generally relates to treated geothermal brine compositions containing reduced concentrations of silica, iron, and potassium compared to the untreated brines. Exemplary compositions of the treated brine contain a concentration of silica ranging from about 0 mg/kg to about 15 mg/kg, a concentration of iron ranging from about 0 mg/kg to about 10 mg/kg, and a concentration of potassium ranging from about 300 mg/kg to about 8500 mg/kg. Other exemplary compositions of the treated brines also contain reduced concentrations of elements like rubidium, cesium, and lithium. | 06-19-2014 |
20140174745 | Treated Geothermal Brine Compositions With Reduced Concentrations of Silica, Iron, and Zinc - This invention relates to treated geothermal brine compositions containing reduced concentrations of iron, silica, and zinc compared to the untreated brines. Exemplary compositions contain concentration of zinc ranges from 0 to 300 mg/kg, concentration of silica ranges from 0 to 30 mg/kg, concentration of iron ranges from 0 to 300 mg/kg. Exemplary compositions also contain reduced concentrations of elements like lithium, manganese, arsenic, barium, and lead. Exemplary compositions include Salton Sea brines containing a concentration of zinc less than 10 mg/kg, a concentration of silica ranging from less than 10 mg/kg, and a concentration of iron less than 10 mg/kg. | 06-26-2014 |
20140187452 | Treated Geothermal Brine Compositions With Reduced Concentrations of Silica, Iron and Manganese - This invention relates to treated geothermal brine compositions containing reduced concentrations of iron, silica, and manganese compared to the untreated brines. Exemplary compositions contain a concentration of manganese less than 10 mg/kg, a concentration of silica ranging from less than 10 mg/kg, and a concentration of iron less than 10 mg/kg, and the treated geothermal brine is derived from a Salton Sea geothermal reservoir. | 07-03-2014 |
20140231041 | Treated Geothermal Brine Compositions With Reduced Concentrations of Iron and Silica - This invention relates to treated geothermal brine compositions containing reduced concentrations of iron and silica compared to the untreated brines. Exemplary compositions of the treated brine contain concentration of silica ranging from 0 to 80 mg/kg and concentration of iron ranging from 0 to 300 mg/kg. Exemplary compositions of the reduced silica and iron brines also contain reduced concentrations of elements like arsenic, barium, lead, and lithium. | 08-21-2014 |
20140239221 | Treated Geothermal Brine Compositions With Reduced Concentrations of Silica, Iron and Lithium - This invention relates to treated geothermal brine compositions containing reduced concentrations of lithium, iron and silica compared to the untreated brines. Exemplary compositions contain concentration of lithium ranges from 0 to 200 mg/kg, concentration of silica ranges from 0 to 30 mg/kg, concentration of iron ranges from 0 to 300 mg/kg. Exemplary compositions also contain reduced concentrations of elements like arsenic, barium, and lead. | 08-28-2014 |
20140239224 | Sorbent for Lithium Extraction - This invention relates to a method for preparing a lithium aluminate intercalate (LAI) matrix solid and methods for the selective extraction and recovery of lithium from lithium containing solutions, including brines. The method for preparing the LAI matrix solid includes reacting aluminum hydroxide and a lithium salt for form the lithium aluminate intercalate, which can then be mixed with up to about 25% by weight of a polymer to form the LAI matrix. | 08-28-2014 |
20140301922 | Preparation of Lithium Carbonate From Lithium Chloride Containing Brines - This invention relates to a method for the preparation of lithium carbonate from lithium chloride containing brines. The method can include a silica removal step, capturing lithium chloride, recovering lithium chloride, supplying lithium chloride to an electrochemical cell and producing lithium hydroxide, contacting the lithium hydroxide with carbon dioxide to produce lithium carbonate. | 10-09-2014 |
20140366535 | PROCESS FOR PRODUCING GEOTHERMAL POWER, SELECTIVE REMOVAL OF SILICA AND IRON FROM BRINES, AND IMPROVED INJECTIVITY OF TREATED BRINES - This invention relates to a method for producing geothermal power using geothermal brines while producing a reduced silica and iron brine having improved injectivity. The resulting compositions include a composition with reduced silica, iron, and lithium having reduced quantity of total suspended solids. | 12-18-2014 |
20150090457 | Selective Removal of Silica From Silica Containing Brines - This invention relates to a method for selective removal of silica and silicon containing compounds from solutions that include silica and silicon containing compounds, including geothermal brines. | 04-02-2015 |
20150132202 | Porous Activated Alumina Based Sorbent for Lithium Extraction - This invention relates to a method for preparing a lithium activated alumina intercalate solid by contacting a three-dimensional activated alumina with a lithium salt under conditions sufficient to infuse lithium salts into activated alumina for the selective extraction and recovery of lithium from lithium containing solutions, including brines. | 05-14-2015 |
20150152309 | Treated Geothermal Brine Compositions With Reduced Concentrations of Silica, Iron and Lithium - This invention relates to treated geothermal brine compositions containing reduced concentrations of lithium, iron and silica compared to the untreated brines. Exemplary compositions contain concentration of lithium ranges from 0 to 200 mg/kg, concentration of silica ranges from 0 to 30 mg/kg, concentration of iron ranges from 0 to 300 mg/kg. Exemplary compositions also contain reduced concentrations of elements like arsenic, barium, and lead. | 06-04-2015 |
20150259215 | Preparation Of Lithium Carbonate From Lithium Chloride Containing Brines - This invention relates to a method for the preparation of lithium carbonate from lithium chloride containing brines. The method can include a silica removal step, capturing lithium chloride, recovering lithium chloride, supplying lithium chloride to an electrochemical cell and producing lithium hydroxide, contacting the lithium hydroxide with carbon dioxide to produce lithium carbonate. | 09-17-2015 |