ROCKS AND AGGREGATE, AND METHODS OF MAKING AND USING THE SAME
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Accused Products
Abstract
Compositions comprising synthetic rock, e.g., aggregate, and methods of producing and using them are provided. The rock, e.g., aggregate, contains CO2 and/or other components of an industrial waste stream. The CO2 may be in the form of divalent cation carbonates, e.g., magnesium and calcium carbonates. Aspects of the invention include contacting a CO2 containing gaseous stream with a water to dissolve CO2, and placing the water under precipitation conditions sufficient to produce a carbonate containing precipitate product, e.g., a divalent cation carbonate.
229 Citations
68 Claims
- 1. An aggregate comprising a CO2-sequestering component
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22. An aggregate comprising carbon wherein the carbon has a carbon isotopic fractionation (δ
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13C) value more negative than −
10‰
. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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13C) value more negative than −
- 37. An aggregate comprising 90-99.9% carbonate, 0.1 to 10% sulfate and/or sulfite.
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45. A method of sequestering CO2 comprising
(i) precipitating a CO2-sequestering carbonate compound composition from a divalent cation-containing water to form a precipitate; - and
(ii) producing aggregate comprising the CO2-sequestering carbonate compound composition - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
- and
- 57. A method of manufacturing aggregate comprising precipitating a carbonate compound from a divalent cation-containing water and processing the precipitate to produce an aggregate.
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68. A system for producing an aggregate, comprising
(i) an input for a divalent cation-containing water; -
(ii) a carbonate compound precipitation station that subjects the water to carbonate compound precipitation conditions and produces a precipitated carbonate compound composition; and (iii) an aggregate producer for producing aggregate from the precipitated carbonate compound composition.
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Specification