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AssigneeCalera Corporation
InventorsBrent Constantz, Paulo J. M. Monteiro, Sidney Omelon, Miguel Fernandez, Kasra Farsad, Katharine Geramita, Karin Yaccato
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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.
A method comprising:
Dependencies are inferred from the claim text.