− | [[file:GeosequestrationProcess.JPG|thumb|400px|{{figure number|1}}A simplified view of the steps involved in the geosequestration process (image courtesy of Cooperative Research Centre for Greenhouse Gas Technologies [CO2CRC]).<ref name=Kaldietal_2009>Kaldi, J. G., C. M. Gibson-Poole, and T. H. D. Payenberg, 2009, Geological input to selection and evaluation of CO<sub>2</sub> geosequestration sites, in M. Grobe, J. C. Pashin, and R. L. Dodge, eds., Carbon dioxide sequestration in geological media—State of the science: AAPG Studies in Geology 59 , p. 5–16.</ref>]] | + | [[file:GeosequestrationProcess.JPG|thumb|400px|{{figure number|1}}A simplified view of the steps involved in the geosequestration process (image courtesy of Cooperative Research Centre for Greenhouse Gas Technologies [CO2CRC]).<ref name=Kaldietal_2009>Kaldi, J. G., C. M. Gibson-Poole, and T. H. D. Payenberg, 2009, [http://archives.datapages.com/data/specpubs/study59/CHAPTER01/CHAPTER01.HTM Geological input to selection and evaluation of CO<sub>2</sub> geosequestration sites], in M. Grobe, J. C. Pashin, and R. L. Dodge, eds., Carbon dioxide sequestration in geological media—State of the science: [http://store.aapg.org/detail.aspx?id=739 AAPG Studies in Geology 59], p. 5–16.</ref>]] |
| Geosequestration comprises several steps: first, the CO<sub>2</sub> is captured at the source, which can be a power plant or other industrial facility; the captured CO<sub>2</sub> is then transported, typically via pipeline, from the source to the geological storage site; next, the CO<sub>2</sub> is injected deep underground via wells into the geological reservoir; and finally, the CO<sub>2</sub> is stored in the geological reservoir, where its movement is carefully monitored and the quantity stored is regularly verified ([[:file:GeosequestrationProcess.JPG|Figure 1]]). The capture, transport, and injection processes do require additional energy to be expended (and hence more CO<sub>2</sub> is emitted); however, the net CO<sub>2</sub> emission reduction is still a significantly large volume to make deep reductions in anthropogenic greenhouse gas emissions. For example, a power plant with CCS could reduce net CO<sub>2</sub> emissions to the atmosphere by approximately 80–90% compared to a plant without CCS ([[:file:CO2EmissionsComparison.JPG|Figure 2]]).<ref name=IPCC_2005 /> | | Geosequestration comprises several steps: first, the CO<sub>2</sub> is captured at the source, which can be a power plant or other industrial facility; the captured CO<sub>2</sub> is then transported, typically via pipeline, from the source to the geological storage site; next, the CO<sub>2</sub> is injected deep underground via wells into the geological reservoir; and finally, the CO<sub>2</sub> is stored in the geological reservoir, where its movement is carefully monitored and the quantity stored is regularly verified ([[:file:GeosequestrationProcess.JPG|Figure 1]]). The capture, transport, and injection processes do require additional energy to be expended (and hence more CO<sub>2</sub> is emitted); however, the net CO<sub>2</sub> emission reduction is still a significantly large volume to make deep reductions in anthropogenic greenhouse gas emissions. For example, a power plant with CCS could reduce net CO<sub>2</sub> emissions to the atmosphere by approximately 80–90% compared to a plant without CCS ([[:file:CO2EmissionsComparison.JPG|Figure 2]]).<ref name=IPCC_2005 /> |