Carbon dioxide removal (CDR) options - WITNESS

Carbon capture

Carbon capture models include

• Direct air capture
  • Amine scrubbing
  • Calcium potassium scrubbing
• Flue gas capture
  • Calcium looping
  • Chilled amonia
  • CO2 membranes
  • Mono ethanol amine
  • Piperazine
  • Pressure swing adsorbsion

Carbon storage

Carbon storage models include

• Biomass burying and fossilization
• Deep ocean injection
• Deep saline formation
• Depleted oil or gas refill
• Enhanced oil recovery
• Geologic mineralization
• Pure carbon solid storage
• Reforestation

All these models implement directly the chemical reaction equation (consuming proportionate inputs and generating proportionate outputs to the chemical equation coefficients), computing the heat/energy/resources needed for the reaction to happen, as well as the byproducts generated. They all have defined capex/opex/efficiency costing defined to handle how investment convert into actual CCUS capability.

Model Documentation - WITNESS
Corresponding documentation
AIM-Hub BLUES C3IAM COFFEE-TEA DNE21+ GCAM GRACE IFs POLES PROMETHEUS WITCH WITNESS
Previous versions
No previous version available
Model information
Model link	https://www.witness4climate.org/world-environmental-impact-and-economics-scenarios/
Institution	Open-Source for Climate (OS-C), N/A, https://os-climate.org/transition-analysis/., Linux Foundation (LF), N/A, https://www.linuxfoundation.org/.
Solution concept	Systems dynamics based approach
Solution method	OptimizationSimulation-based optimization
Anticipation