System and method of carbon capture and sequestration, environmental remediation, and metals recovery
AssigneeExpansion Energy, LLC
InventorDavid Vandor
Life of this patent
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Abstract
Systems and methods of capturing and sequestering carbon dioxide, comprising mixing a substantially non-aqueous solvent and an alkali such that the solvent and alkali form a solvent suspension, mixing water and a flue gas containing carbon dioxide with the solvent suspension such that a reaction occurs, the reaction resulting in the formation of a carbonate, water and heat. Methods and processes of environmental remediation and recovering metals from waste streams are also provided.
Claims20
An environmental remediation process, comprising:
- mixing a substantially non-aqueous solvent and an alkaline feedstock from a feedstock source such that the solvent and alkaline feedstock form a solvent suspension, the alkaline feedstock having a pH at or above about 5.6;
- mixing water and carbon dioxide with the solvent suspension in a reaction vessel such that a reaction occurs, the reaction resulting in the rapid formation of a carbonate, water and heat, the resulting carbonate being substantially non-aqueous;
- the resulting carbonate precipitating out of solution, requiring no further chemical processing steps, falling toward the bottom of the reaction vessel, and accumulating at the bottom of the reaction vessel together with some substantially non-aqueous solvent.
A method of recovering metals from waste, comprising:
- mixing a substantially non-aqueous solvent and a waste stream containing an enriched metal in the form of a salt or a mineral such that the solvent and waste stream form a solvent suspension;
- mixing water and carbon dioxide with the solvent suspension in a reaction vessel such that a reaction occurs, the reaction resulting in a composition comprising a carbonate, one or more metal species, water and heat, the resulting carbonate being substantially non-aqueous;
- the resulting carbonate precipitating out of solution, requiring no further chemical processing steps, falling toward the bottom of the reaction vessel, and accumulating at the bottom of the reaction vessel together with some substantially non-aqueous solvent;
- the resulting metal species being suitable for production of refined metal, refined metal species or controlled hazardous waste disposal.
An environmental remediation method comprising:
- mixing a substantially non-aqueous solvent and a waste stream such that a solvent suspension is formed, the waste stream containing an alkaline feedstock and a concentrated metal in the form of a salt or a mineral;
- mixing water and carbon dioxide with the solvent suspension in a reaction vessel such that a reaction occurs, the reaction resulting in a composition comprising a carbonate, one or more metal species, water and heat, the resulting carbonate being substantially non-aqueous;
- the resulting carbonate precipitating out of solution;
- the resulting metal species being suitable for production of refined metal, refined metal species or controlled hazardous waste disposal.
Dependencies are inferred from the claim text.