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Author(s): Sheppard MC, Socolow RH
Published: December, 2007
Publisher: AIChE Journal
DOI: 10.1002/aic.11356
Tags: Terrestrial Carbon Storage
Abstract: Briefly stated, carbon capture and sequestration (CCS) will allow us to sustain many of the benefits of access to hydrocarbons even in a carbon constrained world. Even where the CO2 generated by burning hydrocarbon cannot be captured easily (as in the case of oil use for transportation), sequestration of CO2 from other sources (e.g., coal fired power stations) can help create, to some degree, the ‘‘headroom’’ needed to allow for the volumes of CO2 which escape capture. Because of the likely continuing competitive (direct) cost of hydrocarbons, and in light of the huge investment already made in infrastructure to deliver them, the combination of fossil fuel use with CCS is likely to be emphasized as a strong complement to strategies involving alternative, nonhydrocarbon sources of energy supply. Moreover, concerns about the security of supply of transportation fuels are likely to drive moves toward less conventional hydrocarbon sources (coal-to-liquids, unconventional oil and gas, etc.). However, the exploitation of heavy oil, tar sands, oil shales, and liquids derived from coal for transportation fuel comes with a significantly heavier burden of CO2 than is associated with conventional oil and gas. CCS has the potential to mitigate some of this extra CO2 burden, provided it is implemented broadly over the coming decades. Widespread use could continue beyond the end of the century.
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