Extraction of alkaline earth metal hydroxides from produced oilfield brine
US12391567B1 · kind B1 · utility
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Key dates
| Filing date | Jul 1, 2024 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Jul 1, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Method of producing hydroxides for use in carbon dioxide mineralization, the method including adding a first amount of sodium hydroxide to a produced oilfield brine to precipitate Mg(OH)2, adding a second amount of sodium hydroxide to precipitate Ca(OH)2, filtering the precipitates, and adding an amount of the filtered precipitates to an aqueous carbon dioxide solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.