Carbon capture technology

Fossil fuels make up two-thirds of the global energy mix and would still make up almost half by midcentury - even under scenarios where annual emissions are kept at the same level as today. That is why many experts say developing carbon capture technologies is critical in the fight against climate change.

Statoil of Norway is already pumping under the seabed significant quantities of unwanted carbon dioxide from a natural gas field. Sonatrach, the Algerian natural gas and oil company, has a similar project to store unwanted carbon dioxide at its In Salah field. In Canada, EnCana, an energy company, injects unwanted carbon dioxide piped from a coal gasification plant in the United States into its Weyburn, Saskatchewan, field to make it easier to recover hard-to- reach oil.

These and other experiments show that carbon dioxide can be trapped underground with little or no leakage. But commercial-scale facilities to capture and bury the carbon emitted by utilities and installations like refineries still do not exist. Two high-profile projects - one in Scotland led by the British oil company BP, and another in Illinois led by a consortium called FutureGen that includes the coal giant Xstrata - were dealt setbacks over the past year because of ballooning costs and shortfalls in public funding.

Source: IHT, 23/07/08