Calera Corporation

Paulo J M Monteiro

Brent Richard Constantz

Katharine Geramita

Kasra Farsad

Miguel Fernandez

Karin Yaccato

Sidney Omelon

Kyle Self

Irvin Chen

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.

Methods and systems for utilizing waste sources of metal oxides

Provided are compositions, methods and systems including cementitious compositions and reinforcing materials wherein the cementitious composition comprises a metastable component.

Cement and concrete with reinforced material

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El Cerrito, CA, United States of America

Paulo J M Monteiro