公开(公告)号：US20250066214A1

公开(公告)日：2025-02-27

申请号：US18821772

申请日：2024-08-30

Applicant: CarbonBuilt

Inventor： Iman MEHDIPOUR

IPC: C01F11/18

Abstract: The disclosure herein sets forth processes and compositions for producing carbonated materials comprising calcium carbonates through a mechanochemical process. The present disclosure concerns the production of calcium carbonate by sequestrating CO2. Certain processes herein include providing alkaline-rich mineral materials that include carbonatable solid wastes such as lime kiln dust, cement kiln dust, and coal combustion residues, and simultaneously fractioning the alkaline-rich mineral materials, while contacting the alkaline-rich mineral materials with a CO2-containing gas in carbonation reactor at low temperature and ambient pressure. In some embodiments, the alkaline-rich mineral materials are partially carbonated before being used in the processes disclosed herein. After contacting the alkaline-rich mineral materials with a CO2-containing gas in carbonation reactor at low temperature and ambient pressure, solid calcium carbonate is produced. In aqueous reactors, the solid calcium carbonate is filtered from a solution in which it precipitated, and the remaining solution includes hydroxide as well as alkaline metal ions. The solution filtered from the solid calcium carbonate can be sequentially contacted with a CO2-containing gas stream to precipitate additional calcium carbonate. The carbonated materials formed from these processes can be used in the form of a slurry, as a moist powder, as a dried powder, as a reactive filler or as a supplementary cementitious material in a mixture that is used to make concrete.

公开(公告)号：US20250042758A1

公开(公告)日：2025-02-06

申请号：US18718609

申请日：2022-12-14

Applicant: THE UNIVERSITY OF BRITISH COLUMBIA

Inventor： Curtis BERLINGUETTE ,  Zishuai ZHANG

IPC: C01F11/18 ,  B01D53/14 ,  B01D53/62 ,  B01D53/78 ,  C09D5/16 ,  C09D127/18 ,  C09K9/00

Abstract: Particles of a carbonate compound, such as calcium carbonate, in an amorphous form may be precipitated from solution, freeze dried and compressed to form transparent or translucent objects. The objects may, for example comprise blocks, bricks or other shapes that may be used in construction of buildings. Advantageously the carbonate compound may incorporate carbonate ions obtained by capture of carbon dioxide from an atmosphere of air, flue gas, exhaust gas or the like. Captured carbon may be sequestered in the objects indefinitely.

公开(公告)号：US20250019254A1

公开(公告)日：2025-01-16

申请号：US18768572

申请日：2024-07-10

Applicant: Ripcord Energy Solutions, LLC

Inventor： Linda Esther Schweitzer ,  Bobby Burkes, Sr.

IPC: C01F11/18 ,  B01D19/00

Abstract: Methods of precipitating carbon dioxide stripped from natural gas or a post-combustion source are disclosed herein. The methods include provision of an aqueous spent caustic solution comprising carbon dioxide and adding a source of calcium ions to precipitate calcium carbonate and form a brine solution. The source of calcium ions is primarily calcium chloride and has calcium hydroxide as less than 1% wt/wt of the source of calcium ions. The method can include collecting the calcium carbonate precipitate, washing the calcium carbonate precipitate, and drying the calcium carbonate precipitate.

公开(公告)号：US20250011950A1

公开(公告)日：2025-01-09

申请号：US18890870

申请日：2024-09-20

Applicant: Mangrove Water Technologies LTD.

Inventor： Saad Dara ,  Benjamin Zahiri

IPC: C25B9/23 ,  B01D61/46 ,  B01D69/02 ,  C01D15/02 ,  C01D15/04 ,  C01D15/08 ,  C01F5/24 ,  C01F11/18 ,  C02F1/461 ,  C02F1/469 ,  C02F101/10 ,  C02F103/08 ,  C02F103/10 ,  C25B1/16 ,  C25B9/19 ,  C25B9/21 ,  C25B11/032 ,  C25B11/046 ,  C25B11/048 ,  C25B11/052 ,  C25B11/053 ,  C25B13/00 ,  C25C1/02 ,  C25C7/02 ,  C25C7/04

Abstract: In this disclosure, a process of recycling acid, base and the salt reagents required in the Li recovery process is introduced. A membrane electrolysis cell which incorporates an oxygen depolarized cathode is implemented to generate the required chemicals onsite. The system can utilize a portion of the salar brine or other lithium-containing brine or solid waste to generate hydrochloric or sulfuric acid, sodium hydroxide and carbonate salts. Simultaneous generation of acid and base allows for taking advantage of both chemicals during the conventional Li recovery from brines and mineral rocks. The desalinated water can also be used for the washing steps on the recovery process or returned into the evaporation ponds. The method also can be used for the direct conversion of lithium salts to the high value LiOH product. The method does not produce any solid effluent which makes it easy-to-adopt for use in existing industrial Li recovery plants.

公开(公告)号：US20250011949A1

公开(公告)日：2025-01-09

申请号：US18890121

申请日：2024-09-19

Applicant: Mangrove Water Technologies LTD.

Inventor： Saad Dara ,  Benjamin Zahiri

IPC: C25B9/23 ,  B01D61/46 ,  B01D69/02 ,  C01D15/02 ,  C01D15/04 ,  C01D15/08 ,  C01F5/24 ,  C01F11/18 ,  C02F1/461 ,  C02F1/469 ,  C02F101/10 ,  C02F103/08 ,  C02F103/10 ,  C25B1/16 ,  C25B9/19 ,  C25B9/21 ,  C25B11/032 ,  C25B11/046 ,  C25B11/048 ,  C25B11/052 ,  C25B11/053 ,  C25B13/00 ,  C25C1/02 ,  C25C7/02 ,  C25C7/04

Abstract: In this disclosure, a process of recycling acid, base and the salt reagents required in the Li recovery process is introduced. A membrane electrolysis cell which incorporates an oxygen depolarized cathode is implemented to generate the required chemicals onsite. The system can utilize a portion of the salar brine or other lithium-containing brine or solid waste to generate hydrochloric or sulfuric acid, sodium hydroxide and carbonate salts. Simultaneous generation of acid and base allows for taking advantage of both chemicals during the conventional Li recovery from brines and mineral rocks. The desalinated water can also be used for the washing steps on the recovery process or returned into the evaporation ponds. The method also can be used for the direct conversion of lithium salts to the high value LiOH product. The method does not produce any solid effluent which makes it easy-to-adopt for use in existing industrial Li recovery plants.

公开(公告)号：US12172955B2

公开(公告)日：2024-12-24

申请号：US18611240

申请日：2024-03-20

Applicant: INNOVATOR ENERGY, LLC

Inventor： Ethan Novek

IPC: C07C51/02 ,  C01F11/02 ,  C01F11/04 ,  C01F11/06 ,  C01F11/18 ,  C04B2/00 ,  C07C51/47

Abstract: The present application pertains to processes producing oxides using a weak acid intermediate. In one embodiment a material comprising calcium carbonate is reacted with a solution comprising aqueous carboxylic acid to form a gas comprising carbon dioxide and a solution comprising aqueous calcium carboxylate. The solution comprising aqueous calcium carboxylate is reacted with sodium sulfate to form a solution comprising aqueous sodium carboxylate and a solid comprising calcium sulfate. The solution comprising aqueous sodium carboxylate is reacted with sulfur dioxide to form sodium sulfite and an aqueous carboxylic acid. The sodium sulfite is separated from said aqueous carboxylic acid and reacted to form a solid comprising calcium sulfite which is decomposed to form calcium oxide and sulfur dioxide.

公开(公告)号：US12172904B2

公开(公告)日：2024-12-24

申请号：US18075929

申请日：2022-12-06

Applicant: Arelac, Inc.

Inventor： Michael Joseph Weiss ,  Ryan J Gilliam

IPC: C01F11/18

Abstract: Provided herein are methods and systems to form calcium carbonate comprising vaterite, comprising dissolving lime in an aqueous base solution under one or more precipitation conditions to produce a precipitation material comprising calcium carbonate and a supernatant solution, wherein the calcium carbonate comprises vaterite.

公开(公告)号：US20240409427A1

公开(公告)日：2024-12-12

申请号：US18736950

申请日：2024-06-07

Applicant: Worcester Polytechnic Institute

Inventor： Andrew R. Teixeira ,  Michael T. Timko ,  David Kenney

IPC: C01F11/18

Abstract: A recycling and waste management process receives municipal solid waste (MSW) with substantial organic content to form a self-sustaining Hydrothermal Mineralization (HTM) process based on Supercritical Water Oxidation (SCWO) to receive supercritical steam and carbon dioxide with potential for electrical generation before forming calcium carbonate suitable for concrete production. Hydrothermal mineralization (HTM) provides a rapid elimination of organic wastes while simultaneously producing a non-emissive and thermally stable cement additive to act as a carbon sink. Hydrothermal mineralization (HTM) provides a rapid disposal pathway for organic wastes, a green source of electricity and a final product that can be coupled with traditional and alternative cement productions to reduce carbon footprints of cement production.

公开(公告)号：US20240391770A1

公开(公告)日：2024-11-28

申请号：US18694810

申请日：2022-09-26

Applicant: Blue Planet Systems Corporation

Inventor： Kyle Self ,  Jacob Schneider ,  Brent R. Constantz

IPC: C01B3/52 ,  B01D53/047 ,  B01D53/14 ,  B01D53/18 ,  B01D53/62 ,  C01B3/12 ,  C01B3/36 ,  C01B3/56 ,  C01F11/18 ,  C04B14/28

Abstract: Methods of separating CO2 from a hydrogen synthesis product stream to produce a CO2 depleted hydrogen stream are provided. Aspects of the methods include combining the hydrogen synthesis product stream with a capture liquid and a cation source in a manner sufficient to produce a CO2 sequestering solid and separate CO2 from the hydrogen synthesis product stream to produce the CO2 depleted hydrogen stream. Also provided are systems for practicing the methods.

公开(公告)号：US12146130B2

公开(公告)日：2024-11-19

申请号：US16890290

申请日：2020-06-02

Applicant: Blue Planet Systems Corporation

Inventor： Brent R. Constantz ,  Mark Bewernitz ,  Jacob Schneider ,  Chris Camire

IPC: C04B28/00 ,  B01D53/18 ,  B01D53/62 ,  B01D53/78 ,  C01B32/60 ,  C01F5/00 ,  C01F5/24 ,  C01F11/18 ,  C04B22/10 ,  C04B28/04 ,  C12M1/00 ,  C12M1/40

Abstract: Aspects of the invention include methods of removing carbon dioxide (CO2) from a CO2 containing gas. In some instances, the methods include contacting CO2 containing gas with a bicarbonate buffered aqueous medium under conditions sufficient to produce a bicarbonate rich product. Where desired, the resultant bicarbonate rich product or a component thereof may then be stored or further processed, e.g., combined with a divalent alkaline earth metal cation, under conditions sufficient to produce a solid carbonate composition. Aspects of the invention further include systems for practicing the methods, as well as products produced by the methods.