CCS is not new. On a smaller scale, it is used in other industrial processes and carbon dioxide (CO2) has been injected into oil reserves to increase oil recovery for more than 30 years. Over the past 20 years, considerable research and development efforts have been devoted to the long-term, geological storage of CO2.
Once injected, CO2 will be trapped in tiny pores within the storage rock far below the earth’s surface and it will be separated from usable groundwater by thick, impermeable barriers of dense rock.
Projects in Saskatchewan and Norway have safely stored 15 megatonnes of CO2 in depleted oil fields and deep, underwater, saline formations without leakage.
Just like natural gas is today, CO2 can be transported long distances at low-cost. Extensive CO2 pipeline networks have been safely in use in the United States for more than 25 years.
© 2009 TransAlta.