ABSTRACT

Carbon Capture and Sequestration (CCS): A Primer [July 16, 2013]   [open pdf - 1MB]

"Carbon capture and sequestration (or storage)--known as CCS--is a physical process that involves capturing manmade carbon dioxide (CO2) at its source and storing it before its release to the atmosphere. CCS could reduce the amount of CO2 emitted to the atmosphere despite the continued use of fossil fuels. An integrated CCS system would include three main steps: (1) capturing CO2 and separating it from other gases; (2) purifying, compressing, and transporting the captured CO2 to the sequestration site; and (3) injecting the CO2 in subsurface geological reservoirs or storing it in the oceans. As a measure for mitigating global climate change, CCS has attracted congressional interest and support because several projects in the United States and abroad--typically associated with oil and gas production--are successfully capturing, injecting, and storing CO2 underground, albeit at relatively small scales. The oil and gas industry in the United States injects nearly 50 million metric tons of CO2 underground each year to help recover oil and gas resources (a process known as enhanced oil recovery, or EOR). Potentially, much larger amounts of CO2 produced from electricity generation--approximately 2.1 billion metric tons per year, about 40% of the total CO2 emitted in the United States from fossil fuels (see Table 1)--could be targeted for large-scale CCS."

Report Number:
CRS Report for Congress, R42532
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Publisher:
Date:
2013-07-16
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Copyright:
Public Domain
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Via E-mail
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application/pdf
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