Three Main Approaches to CO2 Capture

There are three main approaches to CO2 capture

  1. As a pure or near pure CO2 stream, either from an existing industrial process or by reengineering a process to generate such a stream (e.g., oxyfueling power-generation plant, precombustion fuel gasification)
  2. Concentration of the discharge from an industrial process into a pure or near-pure CO2 stream (e.g., postcombustion separation from power plant or cement plant flue gases)
  3. Direct air capture into a pure CO2 stream or into chemically stable end product (e.g., mineralization of steel slag)

CO2 Capture

Pic 1. Main approaches to CO2 capture

Reference

Stephen A. Rackley. Carbon Capture and Storage. 2010. Elsevier Inc.

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