Alkali enrichment mediated CO
Methods of sequestering CO 2 from a gaseous source of CO 2 are provided. Aspects of the methods include employing an alkali enrichment protocol, such as a membrane mediated alkali enrichment protocol, in a CO 2 sequestration protocol. Also provided are systems for practicing the methods.
1 . A system for sequestering CO 2 from a gaseous source of CO 2 , the system comprising:
a membrane mediated alkali enrichment module comprising a membrane and configured to balance charges with ion flow through the membrane;
a CO 2 gas/liquid contactor module; and
a carbonate production module.
2 . The system according to claim 1 , wherein the alkali enrichment module is a membrane mediated alkali enrichment module.
3 . The system according to claim 1 , wherein the CO 2 gas/liquid contactor module comprises a hollow fiber membrane.
4 . The system according to claim 1 , wherein the carbonate production module is configured to produce a carbonate slurry.
5 . The system according to claim 1 , wherein the carbonate production module is configured to produce a non-slurry carbonate solid.
6 . The system according to claim 1 , wherein the system is operatively coupled to sources of first and second distinct liquids.
7 . The system according to claim 1 , wherein the system is operatively coupled to the gaseous source of CO 2 .
8 . The system according to claim 1 , wherein the gaseous source of CO 2 is a multi-component gaseous stream.
9 . The system according to claim 8 , wherein the gaseous source of CO 2 is a flue gas.
10 . The system according to claim 1 , wherein at least two of:
the alkali enrichment module;
the CO 2 gas/liquid contactor module; and
the carbonate production module
are configured to operate at the same operating pressure.
11 . The system according to claim 1 , wherein all of:
the alkali enrichment module;
the CO 2 gas/liquid contactor module; and
the carbonate production module
are configured to operate at the same operating pressure.
12 . The system according to claim 10 , wherein the operating pressure ranges from 1 to 10 ATM.
13 . The system according to claim 1 , wherein the system is configured to recycle a gas or liquid among at least two of:
the alkali enrichment module;
the CO 2 gas/liquid contactor module; and
the carbonate production module.
14 . The system according to claim 1 , wherein the system is configured to process industrial scale volumes of input gases and liquids.