What Is CO2 Sequestration?
Sequestration means permanent storage. Carbon or CO2 sequestration means putting carbon into storage for millions of years. There are two major types of CO2 sequestration: terrestrial and geologic.
Terrestrial Storage uses land management practices (like no-till farming and wetlands and grasslands restoration)
to enhance the removal of CO2 directly from the atmosphere. This relatively passive storage mechanism is important
because it can be implemented immediately and begin to reduce atmospheric CO2 levels soon.
Permanent Geologic Storage involves capturing anthropogenic CO
2 before it enters the atmosphere and injecting it into underground
formations. Once CO
2 is injected deep underground (typically more than 3000 feet or 900 meters) it is trapped in minute pores or spaces
in the rock structure. Impermeable cap rocks above the storage zones act as seals to ensure the safe, permanent storage of CO
2.