Direct Air Capture (DAC) Carbon Dioxide (CO2) Sequestration Methods and Systems

摘要

Methods of sequestering carbon dioxide (CO₂) are provided. Aspects of the methods include contacting an aqueous capture liquid, such as an aqueous capture ammonia, with a direct air capture (DAC) generated gaseous source of CO₂ under conditions sufficient to produce an aqueous carbonate liquid, such as an aqueous ammonium carbonate. The aqueous carbonate liquid is then combined with a cation source under conditions sufficient to produce a solid CO₂ sequestering carbonate. Also provided are systems configured for carrying out the methods.