Geomass mediated carbon sequestration material production methods and systems for practicing the same
Geomass mediated carbon dioxide (CO 2 ) sequestering methods and systems are provided. Aspects of the methods include contacting a gaseous source of CO 2 and an aqueous capture ammonia to produce a CO 2 sequestering product and an aqueous ammonium salt, and then contacting the aqueous ammonium salt liquid with a geomass, e.g., alkaline waste product, to regenerate the aqueous capture ammonia. Also provided are systems configured for carrying out the methods.
1. A method of sequestering CO 2 from a gaseous source of CO 2 , the method comprising:
(a) contacting an aqueous ammonia capture liquid with a gaseous source of CO 2 under conditions sufficient to produce a CO 2 sequestering carbonate and an aqueous ammonium salt; and
(b) combining the aqueous ammonium salt with a geomass to produce a regenerated aqueous ammonia capture liquid;
to sequester CO 2 from the gaseous source of CO 2 ,
wherein the method does not comprise purification of the regenerated aqueous ammonia capture liquid.
2. The method according to claim 1 , wherein step (a) comprises contacting the aqueous ammonia capture liquid with the gaseous source of CO 2 under conditions sufficient to produce an aqueous ammonium carbonate and then contacting the aqueous ammonium carbonate with a cation source to produce the CO 2 sequestering carbonate.
3. The method according to claim 1 , wherein step (a) comprises contacting the aqueous ammonia capture liquid that includes a cation source with the gaseous source of CO 2 under conditions sufficient to produce the CO 2 sequestering carbonate and the aqueous ammonium salt.
4. The method according to claim 1 , wherein the production of the CO 2 sequestering carbonate produces CO 2 gas.
5. The method according to claim 4 , wherein the produced CO 2 gas is recovered by contact with an aqueous capture ammonia liquid.
6. The method according to claim 1 , wherein the geomass comprises construction and demolition waste (C&DW).
7. The method according to claim 1 , wherein the geomass comprises coal combustion products (CCPs).
8. The method according to claim 1 , wherein the geomass comprises alkaline waste products.
9. The method according to claim 1 , wherein the gaseous source of CO 2 comprises flue gas.
10. The method according to claim 1 , wherein the method produces a CO 2 sequestering aggregate.
11. A method of sequestering CO 2 from a gaseous source of CO 2 , the method comprising:
(a) contacting an aqueous ammonia capture liquid with a gaseous source of CO 2 under conditions sufficient to produce a CO 2 sequestering carbonate and an aqueous ammonium salt; and
(b) combining the aqueous ammonium salt with a geomass to produce a regenerated aqueous ammonia capture liquid, wherein the geomass comprises construction and demolition waste (C&DW);
to sequester CO 2 from the gaseous source of CO 2 ,
wherein the method further comprises purification of the regenerated aqueous ammonia.
12. The method according to claim 11 , wherein the purification comprises stripping aqueous capture ammonia from the regenerated aqueous ammonia.
13. The method according to claim 11 , wherein step (a) comprises contacting the aqueous ammonia capture liquid with the gaseous source of CO 2 under conditions sufficient to produce an aqueous ammonium carbonate and then contacting the aqueous ammonium carbonate with a cation source to produce the CO 2 sequestering carbonate.
14. The method according to claim 11 , wherein step (a) comprises contacting the aqueous ammonia capture liquid that includes a cation source with the gaseous source of CO 2 under conditions sufficient to produce the CO 2 sequestering carbonate and the aqueous ammonium salt.
15. The method according to claim 11 , wherein the production of the CO 2 sequestering carbonate produces CO 2 gas.
16. A method of sequestering CO 2 from a gaseous source of CO 2 , the method comprising:
contacting an aqueous capture ammonia liquid with a gaseous source of CO 2 under conditions sufficient to produce an aqueous ammonium carbonate liquid;
combining a cation source with the aqueous ammonium carbonate liquid under conditions sufficient to produce a CO 2 sequestering carbonate and an ammonium salt liquid; and
combining the aqueous ammonium salt liquid with a geomass to produce a regenerated aqueous ammonia capture liquid;
to sequester CO 2 from the gaseous source of CO 2 ,
wherein the method does not comprise purification of the regenerated aqueous ammonia capture liquid.
17. The method according to claim 16 , wherein the production of the CO 2 sequestering carbonate and ammonium salt liquid produces CO 2 gas.
18. The method according to claim 17 , wherein the produced CO 2 gas is recovered by contact with an aqueous capture ammonia liquid.
19. The method according to claim 16 , wherein cation source comprises an alkaline earth metal cation.