Keith, David W., Geoffrey Holmes, David St. Angelo, and Kenton Heidel. "A Process for Capturing CO2 from the Atmosphere." Joule 2.8 (August 2018): 1573-1594.

Abstract

We describe a process for capturing CO2 from the atmosphere in an industrial plant. The design captures ~1 Mt-CO2/year in a continuous process using an aqueous KOH sorbent coupled to a calcium caustic recovery loop. We describe the design rationale, summarize performance of the major unit operations, and provide a capital cost breakdown developed with an independent consulting engineering firm. We report results from a pilot plant that provides data on performance of the major unit operations. We summarize the energy and material balance computed using an Aspen process simulation.