Preprint / Version 1

Assessment of carbon capture techniques and their carbon sequestration potential, technical characteristics, and cost.


  • Connor Yu N/A



DAC, Carbon Capture, Carbon Sequestration, biochar, Enhanced Rock Weathering


The scientific community has declared a need for urgent action on climate change to limit global warming to 1.5℃. To achieve this goal, carbon capture has been identified as a potential critical method. Currently, carbon capture facilities sequester around 45 megatonnes of CO2 a year. The International Energy Agency estimates that around 1.2 gigatonnes of CO2 must be removed by the year 2030 to stabilize the rate of global warming. This review compares the technical aspects, costs, and carbon sequestration potential of three carbon capture methods: direct air capture, biochar, and enhanced rock weathering. While direct air capture is the most developed and most reliable in sequestration ability of the three, it is more expensive than enhanced rock weathering and biochar, which are cheaper but more variable in sequestration. For these reasons, DAC is the frontrunner of carbon capture and holds the most potential in helping reach the 1.2Gt Target.


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