CO2 SINK
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 * WIDER ISSUES  *


Sustainability

Approximately one third of all CO2 emissions due to human activity come from fossil fuels used for generating electricity, with each power plant capable of emitting several million tons of CO2 annually. A variety of other industrial processes also emit large amounts of CO2 , for example oil refineries, cement works, and iron and steel production. These emissions could be reduced substantially, without major changes to the basic process, by capturing and storing the CO2 . There are many ways in which CO2 emissions can be reduced, such as increasing the efficiency of power plant or by using natural gas instead of coal as a fuel. However, most scenarios suggest that these steps alone will not achieve the required reductions in CO2 emissions. The capture and storage of CO2 from fossil fuel combustion could play an important part in solving this problem. In the long-term, the world's energy system may have to be based on non-fossil energy sources. Decarbonising the use of fossil fuels, by capture and storage of CO2, would help the transition to a future carbon-free energy system.

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