| CPC B01D 53/1475 (2013.01) [B01D 53/1412 (2013.01); B01D 53/1493 (2013.01); B01D 53/18 (2013.01); B01D 53/346 (2013.01); B01D 53/62 (2013.01); B01D 53/78 (2013.01); C25B 1/04 (2013.01); C25B 1/34 (2013.01); C25B 15/081 (2021.01); B01D 2251/604 (2013.01); B01D 2252/103 (2013.01); B01D 2257/504 (2013.01); B01D 2258/0283 (2013.01)] | 12 Claims |
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1. A system comprising:
a direct air capture (DAC) subsystem, wherein the DAC subsystem comprises:
an air inlet configured to receive a flow of air comprising carbon dioxide;
a water inlet configured to receive a flow of produced water from a production system;
one or more air-water contactors configured to contact the flow of air with the flow of produced water to dissolve the carbon dioxide from the flow of air into the produced water to produce a treated air and a water output, wherein the water output comprises a carbon rich aqueous solution comprising dissolved carbon dioxide, carbonic acid, carbonate anions, bicarbonate anions, or a combination thereof;
a deaerator downstream from the one or more air-water contactors, wherein the deaerator is configured to receive the water output of the one or more air-water contactors;
a first hydroxide source configured to supply a first amount of hydroxide into the produced water, the water output, or a combination thereof to produce a flow of hydroxide rich produced water from the one or more air-water contactors; and
a second hydroxide source configured to supply a second amount of hydroxide into a bypass stream of the deaerator to produce a flow of hydroxide rich deaerated water.
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