A method for permanent disposal of CO{sub 2} in solid form

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We describe a method for binding the greenhouse gas carbon dioxide as magnesium carbonate, a thermodynamically stable solid, for safe and permanent disposal, and with minimal environment impact. The technique is based on extracting magnesium hydroxide from common ultramafic rock for thermal carbonation and subsequent disposition. The economics of the method appear to be promising, however, many details of the proposed process have yet to be optimized. Initial estimates indicate that binding and disposal would impose a burden of approximately 3{cents}/kWH onto the cost of electricity. This cost could be reduced significantly in the short term by entering niche markets ... continued below

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28 p.

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Butt, D.P.; Lackner, K.S. & Wendt, C.H. February 4, 1997.

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Description

We describe a method for binding the greenhouse gas carbon dioxide as magnesium carbonate, a thermodynamically stable solid, for safe and permanent disposal, and with minimal environment impact. The technique is based on extracting magnesium hydroxide from common ultramafic rock for thermal carbonation and subsequent disposition. The economics of the method appear to be promising, however, many details of the proposed process have yet to be optimized. Initial estimates indicate that binding and disposal would impose a burden of approximately 3{cents}/kWH onto the cost of electricity. This cost could be reduced significantly in the short term by entering niche markets for various technologies for efficient extraction and thermal carbonation. In this paper, we describe some of the kinetic limitations and opportunities. The proposed disposal technique may be viewed as a sort of insurance policy in case global warming, or the perception of global warming causes severe restrictions on CO{sub 2} emissions.

Physical Description

28 p.

Notes

OSTI as DE97007743

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  • 8. global warming international conference and expo, New York, NY (United States), 25-28 May 1997

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  • Other: DE97007743
  • Report No.: LA-UR--97-712
  • Report No.: CONF-970522--2
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 515991
  • Archival Resource Key: ark:/67531/metadc690831

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • February 4, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • May 20, 2016, 2:56 p.m.

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Butt, D.P.; Lackner, K.S. & Wendt, C.H. A method for permanent disposal of CO{sub 2} in solid form, article, February 4, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc690831/: accessed January 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.