Patent application number | Description | Published |
20090169452 | METHODS OF SEQUESTERING CO2 - Methods of sequestering carbon dioxide (CO | 07-02-2009 |
20090301352 | PRODUCTION OF CARBONATE-CONTAINING COMPOSITIONS FROM MATERIAL COMPRISING METAL SILICATES - Provided are methods for producing carbonate-containing compositions comprising silicon-based material (e.g., pozzolanic material) from a source of carbon dioxide, a divalent cation-containing solution, and a source of proton-removing agents. In such methods, divalent cations of the divalent cation-containing solution are provided by digestion of material comprising metal silicates. Also provided are methods for producing carbonate-containing compositions comprising little or no silicon-based material. In such methods, silicon-based material (e.g., silica, unreacted or undigested silicates, aluminosilicates, etc.) may be separated and processed separately from carbonate-containing compositions. Silicon-based material and carbonate-containing material may be blended at a later stage to produce a pozzolanic material, which may be further processed and blended with, for example, Portland cement. | 12-10-2009 |
20100000444 | METHODS AND SYSTEMS FOR UTILIZING WASTE SOURCES OF METAL OXIDES - Methods are provided for producing a composition comprising carbonates, wherein the methods comprise utilizing waste sources of metal oxides. An aqueous solution of divalent cations, some or all of which are derived from a waste source of metal oxides, may be contacted with CO2 and subjected to precipitation conditions to provide compositions comprising carbonates. In some embodiments, a combustion ash is the waste source of metal oxides for the aqueous solution containing divalent cations. In some embodiments, a combustion ash is used to provide a source of proton-removing agents, divalent cations, silica, metal oxides, or other desired constituents or a combination thereof. | 01-07-2010 |
20100077922 | COMPOSITIONS AND METHODS USING SUBSTANCES CONTAINING CARBON - Methods of characterizing and producing compositions with negative δ | 04-01-2010 |
20100135865 | ELECTROCHEMICAL METHODS OF SEQUESTERING CO2 - Methods of sequestering carbon dioxide (CO | 06-03-2010 |
20100150802 | PROCESSING CO2 UTILIZING A RECIRCULATING SOLUTION - In some embodiments, the invention provides, a method comprising a) contacting a solution with an industrial source of carbon dioxide to produce a CO | 06-17-2010 |
20100239467 | METHODS AND SYSTEMS FOR UTILIZING WASTE SOURCES OF METAL OXIDES - Methods are provided for producing a composition comprising carbonates, wherein the methods comprise utilizing waste sources of metal oxides. An aqueous solution of divalent cations, some or all of which are derived from a waste source of metal oxides, may be contacted with CO | 09-23-2010 |
20100258035 | COMPOSITIONS AND METHODS USING SUBSTANCES CONTAINING CARBON - Methods of characterizing and producing compositions with negative δ | 10-14-2010 |
20100313794 | PRODUCTION OF CARBONATE-CONTAINING COMPOSITIONS FROM MATERIAL COMPRISING METAL SILICATES - Provided are methods for producing carbonate-containing compositions comprising silicon-based material (e.g., pozzolanic material) from a source of carbon dioxide, a divalent cation-containing solution, and a source of proton-removing agents. In such methods, divalent cations of the divalent cation-containing solution are provided by digestion of material comprising metal silicates. Also provided are methods for producing carbonate-containing compositions comprising little or no silicon-based material. In such methods, silicon-based material (e.g., silica, unreacted or undigested silicates, aluminosilicates, etc.) may be separated and processed separately from carbonate-containing compositions. Silicon-based material and carbonate-containing material may be blended at a later stage to produce a pozzolanic material, which may be further processed and blended with, for example, Portland cement. | 12-16-2010 |