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Essay On Co2 Sequestration

1460 Words6 Pages

The increase in the concentration of carbon dioxide (CO2) in the atmosphere as a result of anthropogenic activities has led to global warming. In the last two centuries, the slight increase in average annual temperature was observed. Therefore, researchers predict significant climate change by end of this century, if present scenario continues (IPCC, 2014). Subsurface CO2 sequestration is one of the various options for reducing the CO2 concentration in the atmosphere resulted from anthropogenic activities. CO2 sequestration potentially provides around 1/4 of the required mitigation to global emissions which can delay the global warming to an acceptable extent (Da silva and Ranjith, 2011). Subsurface sequestration captures CO2 at the point of its emission and injects large amounts of it deep into subsurface formations where it can be stored permanently (Bachu et al., 2005).
If successfully conducted, CO2 may be safely sequestrated in depleted (or active) saline aquifers, un-minable coal beds, oil and gas reservoirs. International energy agency (IEA) estimated global geological sequestration (storage) potential of 400-10000 Gt for saline formations and 900 Gt for depleted oil/gas fields (IEA Energy …show more content…

However, in practice it is common for the stream to contain impurities such as N2, Ar, O2, etc, as the CO2 is supplied from industrial sources, Companies prefer to refrain from any extra expenditure, since CO2 sequestration is a non-profit operation. Removal of impurities exerts extra financial pressure on industrial firm which in turn reduces the feasibility of CO2 sequestration projects. Therefore it is necessary to study feasibility of injection of CO2+impurities into the geological formations. Furthermore, there is a lack of data in the realm of injection of CO2 and impurities for sequestration purposes particularly on the solubility

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