Origen Power Process: Carbon Negative Electricity Generation
The fuel cell uses natural gas to generate electricity and breaks limestone (CaCO3) down into lime (CaO) and pure carbon dioxide (CO2).
All of the CO2 is generated at over 99% purity.
The CO2 can be used directly or geologically sequestered,
and the lime created in the process absorbs CO2 from the air to re-form CaCO3:
Carbon Negative Electricity Generation
See Tim Kruger's Ted Talk on the Origen Power Process.