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If you choose to follow any links to the complete text of articles listed below, you will be leaving the Strategian Web site. If you wish to return to this page from the Web page you are sent to, please use the Back option of your browser. Thomas Gentzis Subsurface Sequestration of Carbon Dioxide -- An Overview from an Alberta (Canada) Perspective. (... a very interesting article that gives a useful overview of the magnitude and consequences [like global warming and climate change] of the build-up of greenhouse gases in Earth's atmosphere. The author writes excluding water vapour, CO2 [carbon dioxide] from combustion of fossil fuels is the largest single source of anthropogenic [human-produced] GHG [greenhouse gas] emissions, accounting for about 80% in the United States and 87% in Canada during the past 50 years. The author discusses the use of various kinds of sinks for providing long-term storage or sequestration of carbon dioxide to prevent its release into the atmosphere. This could result in the reduction of the concentration of carbon dioxide in the atmosphere without having to reduce or, at least, without having to reduce as much the current use of fossil fuels like oil, gas, and coal in vehicles, factories, power generating plants, etc. A variety of carbon dioxide sinks are available such as ocean disposal, sequestration in trees and soils, storage in deep aquifers beneath the surface of the Earth, and underground storage in depleted oil and gas reservoirs. This latter variety of sink has been used for some time by industry to help recover any oil left in a reservoir after most of the oil has been removed by other methods [this is called enhanced oil recovery or EOR]. The author discusses sequestering carbon dioxide in deep coalbeds in some detail explaining how the CO2 can be used to assist in recovering methane gas [a concept called enhanced gas recovery or EGR] from deep coalbeds that are not being mined. This can be an attractive option because coal seams can easily contain up to five times the amount of gas contained in a conventional gas reservoir of comparable size. This methane gas can then be used to fuel power plants and/or for other purposes. From the perspective of Alberta, Canada [using estimates of recoverable coalbed methane resources and the total carbon dioxide storage capacity of Alberta coalbeds], the author states all of Alberta's annual CO2 emissions could be sequestered in the coalbeds for a period of several centuries--from the text of the article) International Journal of Coal Geology Volume 43, Numbers 1-4 (May 2000): 287-305. **An abstract of this article is currently available through the Web site of International Journal of Coal Geology** How to find the above journals, magazines, and other publications? See Step 3: Locate of the Information Strategy for details. Questions about any or all of the above? Please let me know. |
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