Geologic carbon sequestration
Geologic carbon sequestration is the process of storing carbon dioxide (CO2) in underground geological formations. The CO2 is usually pressurised until it becomes a liquid, and then injected into porous rock formations in geologic basins.
This type of carbon storage can also be part of enhanced oil recovery, known as tertiary recovery, used at the later stages of drilling to extract more from an oil well.
The same term might also be used to describe the relatively new practice of sequestering carbon mechanically in certain construction products such as concrete. This is type of sequestration is mechanical as opposed to biologic carbon sequestration which refers to the storage of atmospheric carbon in vegetation, soils, woody products, and aquatic environments.
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