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oa Carbon capture and storage: The way ahead
- Source: Sustainable Technologies, Systems & Policies, Volume 2012, Issue Carbon Capture and Storage Workshop, Texas A&M University in Qatar, Dec 2012, 9
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- 01 November 2012
- 17 November 2012
- 17 December 2012
Abstract
The paper gives a general introduction and overview of Carbon Capture and Storage (CCS) with an emphasis on the capture of CO 2 and other greenhouse gases from the waste gas streams of power plants and industrial processes. This stage accounts for about 80% of the overall cost of the CCS process so is the area where efficiency and cost improvements will have the greatest future impact. The major drivers for continuing to use fossil fuels for most of this century are first considered and the need to implement CCS as one of many measures to mitigate carbon emissions. Current targets will require a commercial CCS capacity to remove about 10Gte CO 2 pa by 2050. The overall features of CCS processes are described – capture, compression and transport, sub-surface storage – covering the main capture options and the three main types of storage site (deep saline aquifers, depleted oil and gas reservoirs and unmineable coal seams). The current status of large-scale CCS demonstration projects is reviewed. The main classes of carbon capture technologies are then described, both those currently capable of large-scale deployment and those in development for the future. Finally the main challenges facing CCS, to make it a globally-deployed commercially viable technology, are summarised and suggestions made for future developments in the clean recovery and use of fossil fuels which combine CCS with sub-surface processing.