Sequestration and Storage of CO2 for Climate Recovery

Katoch, Surjit Singh; Bhat, I. K.
March 2009
Proceedings of World Academy of Science: Engineering & Technolog;Mar2009, Vol. 51, p18
Academic Journal
Atmospheric concentrations of CO2 and other greenhouse gases have risen appreciably in the last 100 years, with human activity known to be a major source. Several strategies are possible to be adopted to reduce CO2 emissions. People can improve the overall efficiency of their energy use by extracting more useful heat and work in the supply and conversion of energy and by reducing their consumption of energy and energy intensive services. Another strategy is to reduce the carbon intensity of energy system by using fossil fuels with a lower C/H elemental ratio and by switching to non-fossil energy sources, such as nuclear and various renewables. A third reduction option is to prevent CO2 emissions from entering the atmosphere through capture and then storage or recycle. Removal can be achieved by extraction of CO2 from the atmosphere by manipulating natural phenomena. The present study reviews the various methods of CO2 capturing, storage, and sequestration. Developing confidence in methods of sequestering CO2 in geological formations requires an improved understanding of the long-term sealing capacity of both the new and historical wellbore systems designed to prevent fluids from escaping the sequestration reservoir. Carbon capture and storage has been expected to be one of effective options for climate change mitigation. Research, development, and demonstration of the geological storage of CO2 are presently being conducted in the world.


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