Carbon Sequestration.ppt

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1、Carbon Sequestration,Anjani Kumar CPSP218L Dudash,http:/ Carbon,Chemical element Forms four covalent chemical bonds Comes from latin carbo coal 4th most abundant element on earth Present in all life forms Part of hydrocarbons, which include petrochemicals and fossil fuels,Background-Carbon Cycle,Bac

2、kground-Global Warming,Burning fossil fuels releases greenhouse gases,http:/www.nysforum.org/documents/html/2007/execcommittee/may/enterprisepowerconsumptionreduction_files/images/image6.png,Problem-How to prevent/slow release of CO2 into atmosphere?,Deforestation is responsible for 20% of the world

3、s annual CO2 emissions In 2006, U.S. carbon dioxide emissions from fossil fuel combustion -6.5 billion tonsDeforestation accounts for 25% of emissions of greenhouse gases; Transport and industry account for 14 per cent each.,S,http:/meic.org/images/energy-images/carbon-sequestration/energy-4.jpg/ima

4、ge,Terrestrial Sequestration,Terrestrial carbon sequestration is CO2 from the atmosphere is absorbed by trees, plants and crops through photosynthesis, and stored as carbon in biomass and soils. There are also carbon sinks, which are forests, croplands, and grazing lands. Oceans are the largest carb

5、on sink on Earth 1/3 of human generated emissions are entering the oceanAgriculture and deforestation releases CO2 into the atmosphere and a carbon sink occurs when carbon sequestration is greater than carbon released over time.,Geologic Sequestration,Geologic sequestration of CO2 through well injec

6、tion. Problem of well contamination Water sources could be contaminated as a result Enhanced oil recovery: pumping CO2 into the reservoir “pushes” the oil out U.S is the leader: 32 million tons/year of CO2 use for this purposeEPA announced in October 2007 geologic sequestration projects in the summe

7、r of 2008. Deep saline formations could hold up to 500 billion tonnes of CO2 in the U.S.A. Most are near point sources of CO2 emission.,Carbon Capture and Storage (C.C.S),Carbon Capture and Storage (CCS): Carbon dioxide is captured at its source, including power plants, industrial processes and then

8、 stored in reservoirs closed to the atmosphere. i.e, depleted oil and gas reservoirs, unmineable coal seams, deep saline formations, deep ocean. Scrubbers at Industrial factories are another example.,http:/uspowerpartners.org/Topics/SECTION5_HEAD-CarbonSequestration.htm,Action Plan,Plant trees aroun

9、d campus, in a forestation initiative. Maintain carbon storage in existing trees/plants.Utilize biodiesel or ethanol instead of fossil fuels, such as coal and oil, which generate large quantities of CO2.,Action plan (continued),Long Term Forest Agreement UMD signed a Long Term Protection Forest Cons

10、ervation Easement with the Maryland Department of Natural Resources in April 2001. Currently, the easement includes 70.56 acres of forest. Campus Tree Inventory More 8000 trees and 1400 acres have been tagged in order to keep track of tree number and type to maximize carbon sequestration. The campus

11、 Tree Radar Unit (TRU) can determine root and truck integrity in a non-invasive manner causing no damage to the trees. Data can be used to guide decisions regarding tree removal and care.,Summary,Carbon Sequestration Mitigating contribution of greenhouse gases to global warming Three types: CCS, Geo

12、logic, and Terrestrial Best option in the time being Action Plan:ForestationUtilizing clean fuels,Literature Cited,R. Lal. “Soil Carbon Sequestration Impacts on Global Climate Change and Food Security.” Science 304 (5677), 1623. DOI: 10.1126/science.1097396. Accessed 11 June 2004. U.S D.O.E. “Carbon

13、 Sequestration.” http:/www.energy.gov/sciencetech/carbonsequestration.htm EPA. “Carbon Sequestration in Agriculture and Forestry.” http:/www.epa.gov/sequestration/faq.html. Accessed 22nd February, 2010 http:/uspowerpartners.org/Topics/SECTION5_HEAD-CarbonSequestration.htm http:/www.epa.gov/ogwdw000/

14、uic/wells_sequestration.html Nilsson et al. “The carbon sequestration potential of a global afforestation program.” Climactic Change. 30.3. Accessed 21st February, 2010. http:/www.fossil.energy.gov/programs/sequestration/geologic/ Howden, Daniel. “Deforestation: The hidden cause of global warming.”

15、17 May 2007. http:/www.independent.co.uk/environment/climate-change/deforestation-the-hidden-cause-of-global-warming-448734.htmlIPCC. “A More Detailed Analysis of the Carbon Budget and its Change during the Past 20 Years.” 2001. http:/www.grida.no/publications/other/ipcc_sr/?src=/climate/ipcc/land_use/019.htm “Campus Sustainability.” http:/www.sustainability.umd.edu/content/campus/forestation.php,