Systems and methods for capturing carbon dioxide and regenerating a capture solution

An electrochemical system for generating reduced products from carbon dioxide from a dilute gas source, the electrochemical system comprising:

• a CO2 capture subsystem configured to generate a carbonate-rich capture solution;
• a carbonate separation subsystem fluidly coupled to the CO2 capture subsystem and operable to receive the carbonate-rich capture solution, the carbonate separation subsystem comprising a crystallizer configured to form a crystalline carbonate hydrate at least in part from the carbonate-rich capture solution;
• and
• a products generation subsystem that is fluidly coupled to the CO2 capture subsystem, and is fluidly coupled to the carbonate separation subsystem via the crystallizer, the products generation subsystem comprising:
• a dissolving tank fluidly coupled to the crystallizer, the dissolving tank configured to dissolve the crystalline carbonate hydrate;
• and
• a CO2 electroreduction unit fluidly coupled to the dissolving tank, the CO2 electroreduction unit comprising one or more bipolar membranes and a catalyst configured to yield one or more reduced products.