Atmospheric carbon dioxide capture system

An atmospheric CO2 capture system comprising:

• a compartment housing a solid amine-functionalized CO2 sorbent;
• a first exchange solution including a first chemical component with a selectivity towards amines;
• a second exchange solution including a second chemical component with a selectivity towards the first chemical component;
• and
• an electrochemical cell connected to the compartment,
• the system having
• a first state of sorbing CO2 from incoming air onto the solid sorbent until a saturation point is reached;
• a second state of regenerating the solid amine-functionalized CO2 sorbent by flooding the compartment with the first exchange fluid to detach CO2 from the saturated sorbent and bind the first chemical component to the solid sorbent, removing the first exchange solution from the compartment, and flooding the compartment with the second exchange solution to detach the first chemical component from the solid sorbent to bind it to the second chemical component;
• and
• a third state of regenerating the first and/or second chemical components by detaching them from each other in the electrochemical cell.

A direct air capture (DAC) system comprising:

• at least one compartment housing a solid amine-functionalized CO2 sorbent;
• at least one exchange fluid including a first chemical component with a preferential affinity towards CO2, amines, or a second chemical component;
• an electrochemical cell fluidly connected to the compartment;
• and
• one or more conduits structured to provide the chemical component in a pristine form from the electrochemical cell to the compartment.