22) is extracted from seawater. In some aspects, a direct ocean capture (DOC) method includes receiving, in an interior volume of a vessel, acidified seawater that includes dissolved carbon dioxide. A carrier gas is bubbled through the acidified seawater in the interior volume of the vessel, thereby causing the carrier gas to extract a portion (e.g., at least 80%) of the carbon dioxide from the acidified seawater. A product gas that includes the extracted carbon dioxide is communicated from the interior of the vessel. The product gas may include, for example, at least 4% carbon dioxide.
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
C02F 1/20 - Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
C02F 9/00 - Multistage treatment of water, waste water or sewage
2.
Extracting Carbon Dioxide from Seawater Using Bubble Reactors
In a general aspect, carbon dioxide (CO2) is extracted from seawater. In some aspects, a direct ocean capture (DOC) method includes receiving, in an interior volume of a vessel, acidified seawater that includes dissolved carbon dioxide. A carrier gas is bubbled through the acidified seawater in the interior volume of the vessel, thereby causing the carrier gas to extract a portion (e.g., at least 80%) of the carbon dioxide from the acidified seawater. A product gas that includes the extracted carbon dioxide is communicated from the interior of the vessel. The product gas may include, for example, at least 4% carbon dioxide.
Methods, devices, and systems are disclosed that capture carbon dioxide from ambient air and/or point source emissions and produce carbon dioxide from the captured atmospheric and/or point source carbon dioxide using one or more products of the carbon capture processes. Implementations filter atmospheric and/or point source impurities during the carbon capture process and in steps for producing a CO2 stream via chemical synthesis and optionally thermal generation. The integration of CO2 removal processes and chemical synthesis of CO2 synergistically combine to reduce and/or eliminate waste streams, resulting in efficient processes with low carbon emissions and reduced waste.
B01D 15/36 - Selective adsorption, e.g. chromatography characterised by the separation mechanism involving ionic interaction, e.g. ion-exchange, ion-pair, ion-suppression or ion-exclusion
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
Methods, devices, and systems are disclosed that capture carbon dioxide from ambient air and/or point source emissions and produce carbon dioxide from the captured atmospheric and/or point source carbon dioxide using one or more products of the carbon capture processes. Implementations filter atmospheric and/or point source impurities during the carbon capture process and in steps for producing a CO2 stream via chemical synthesis and optionally thermal generation. The integration of CO2 removal processes and chemical synthesis of CO2 synergistically combine to reduce and/or eliminate waste streams, resulting in efficient processes with low carbon emissions and reduced waste.
In a general aspect, carbon dioxide is extracted from seawater using substrate-induced nucleation. In certain aspects, a method of removing carbon dioxide from seawater includes receiving seawater and processing the seawater in the reactor. The reactor includes a substrate, and the seawater includes dissolved inorganic carbon. A substrate-induced nucleation process is performed on a surface of the substrate, during which the dissolved inorganic carbon is transformed to carbonate crystal precipitates and carbon dioxide gas. The method further includes extracting at least a portion of the carbon dioxide gas from the processed seawater.
In a general aspect, carbon dioxide is extracted from seawater using substrate-induced nucleation. In certain aspects, a method of removing carbon dioxide from seawater includes receiving seawater and processing the seawater in the reactor. The reactor includes a substrate, and the seawater includes dissolved inorganic carbon. A substrate-induced nucleation process is performed on a surface of the substrate, during which the dissolved inorganic carbon is transformed to carbonate crystal precipitates and carbon dioxide gas. The method further includes extracting at least a portion of the carbon dioxide gas from the processed seawater.
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
B01D 53/78 - Liquid phase processes with gas-liquid contact
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
B01J 19/32 - Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
B01D 15/16 - Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the conditioning of the fluid carrier
In a general aspect, a composite contact composite membrane for direct removal of carbon dioxide from oceanwater is presented. In some cases, a composite membrane includes a supporting layer having a first surface and a second, opposite surface; and a carbon dioxide selective layer disposed on the first surface. The carbon dioxide selective layer is configured to contact an aqueous solution including dissolved carbon dioxide and to selectively transport the dissolved carbon dioxide from the aqueous solution through the supporting layer to the second opposite surface.
In a general aspect, a composite contact composite membrane for direct removal of carbon dioxide from oceanwater is presented. In some cases, a composite membrane includes a supporting layer having a first surface and a second, opposite surface; and a carbon dioxide selective layer disposed on the first surface. The carbon dioxide selective layer is configured to contact an aqueous solution including dissolved carbon dioxide and to selectively transport the dissolved carbon dioxide from the aqueous solution through the supporting layer to the second opposite surface.
B01D 53/22 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by diffusion
B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
A method for capturing and sequestering carbon dioxide (CO2) includes receiving and performing an electrochemical process on the input liquid including water and a salt to produce at least one hydroxide-rich stream, and then capturing CO2 from air using the hydroxide-rich stream and a passive air capture system, thereby producing a liquid carbonate solution containing air-captured CO2. Optional steps include disposing of the liquid carbonate solution, precipitating air-captured CO2 from the liquid carbonate solution as solid carbonate and/or a slurry of carbonate, and mixing the liquid carbonate solution with a hydrogen-rich stream produced by the electrochemical process to generate gaseous CO2. Various integrations and synergies among CO2 capture, renewable energy, water desalination, and metal and mineral extraction are provided.
Methods and systems integrate direct carbon capture and desalination processes to various degrees, benefiting from synergies in the combined processes. A method includes receiving an input liquid comprising a brine reject stream from a water treatment facility and pre-treating the input liquid. The pre-treatment includes one or more of filtration, a reverse osmosis, and ion exchange. The method also includes performing an electrochemical process on the input liquid to produce at least one hydroxide-rich stream and capturing CO2 from air using the hydroxide-rich stream and a passive air capture system, thereby producing a liquid carbonate solution containing air-captured CO2. In some cases byproducts and recovered water can be used by the water treatment facility and/or the carbon capture process.
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
B01D 53/73 - After-treatment of removed components
C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
C02F 1/52 - Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
C02F 1/68 - Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
C02F 1/76 - Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
C02F 9/00 - Multistage treatment of water, waste water or sewage
A method for capturing and sequestering carbon dioxide (CO2) includes receiving and performing an electrochemical process on the input liquid including water and a salt to produce at least one hydroxide-rich stream, and then capturing CO2 from air using the hydroxide-rich stream and a passive air capture system, thereby producing a liquid carbonate solution containing air-captured CO2. Optional steps include disposing of the liquid carbonate solution, precipitating air-captured CO2 from the liquid carbonate solution as solid carbonate and/or a slurry of carbonate, and mixing the liquid carbonate solution with a hydrogen-rich stream produced by the electrochemical process to generate gaseous CO2. Various integrations and synergies among CO2 capture, renewable energy, water desalination, and metal and mineral extraction are provided.
