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An assessment of options for CO2 removal from the atmosphere.
- Source :
- Energy Procedia; Mar2011, Vol. 4, p2877-2884, 8p
- Publication Year :
- 2011
-
Abstract
- Abstract: Recent work examining likely changes in global temperatures as a result of carbon dioxide (CO<subscript>2</subscript>) emissions has suggested that cumulative CO<subscript>2</subscript> emissions (i.e. total emissions over an extended period of time) could be more significant than the differences between particular emissions pathway (e.g. with different timing of emissions or peak emissions rate) in determining how the global climate might change in response to CO<subscript>2</subscript> emissions. This suggests that effective measures to mitigate the risk of dangerous climate change will need to limit cumulative emissions of CO<subscript>2</subscript>. Further, if cumulative CO<subscript>2</subscript> emissions overshoot acceptable limits, it will become necessary to remove CO<subscript>2</subscript> from the air–so-called ‘negative emissions’. Technologies that effect ‘negative emissions’ could also be used to offset additional anthropogenic emissions from sectors where greenhouse gas emissions are difficult or impossible to reduce beyond certain, still relatively high, limits. If the prevailing carbon price for marginal abatement options rises significantly from current levels (e.g. of order up to $200/t CO<subscript>2</subscript> has been suggested by some) then a relatively wide range of options for removing CO<subscript>2</subscript> from the air may become cost-effective. Additionally, some options for removing CO<subscript>2</subscript> from the air are likely to have much lower abatement costs. This paper summarises results from research conducted to compare and contrast various options for capturing CO<subscript>2</subscript> from the air, with a particular focus on establishing the potential of these options to have a significant impact in reducing CO<subscript>2</subscript> emissions and, if so, over what timescales. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 18766102
- Volume :
- 4
- Database :
- Supplemental Index
- Journal :
- Energy Procedia
- Publication Type :
- Academic Journal
- Accession number :
- 59802696
- Full Text :
- https://doi.org/10.1016/j.egypro.2011.02.194