Carbonation of metal silicates for long-term CO2 sequestration

Blencoe, James G; Palmer, Donald A; Anovitz, Lawrence M; Beard, James S

Title: Carbonation of metal silicates for long-term CO2 sequestration

Patent · Tue Mar 18 00:00:00 EDT 2014

OSTI ID:1128516

Blencoe, James G; Palmer, Donald A; Anovitz, Lawrence M; Beard, James S

In a preferred embodiment, the invention relates to a process of sequestering carbon dioxide. The process comprises the steps of: (a) reacting a metal silicate with a caustic alkali-metal hydroxide to produce a hydroxide of the metal formerly contained in the silicate; (b) reacting carbon dioxide with at least one of a caustic alkali-metal hydroxide and an alkali-metal silicate to produce at least one of an alkali-metal carbonate and an alkali-metal bicarbonate; and (c) reacting the metal hydroxide product of step (a) with at least one of the alkali-metal carbonate and the alkali-metal bicarbonate produced in step (b) to produce a carbonate of the metal formerly contained in the metal silicate of step (a).

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-00OR22725

Assignee:: UT-Battelle, LLC (Oak Ridge, TN); University of Tennessee Research Foundation (Knoxville, TN); Virginia Museum of Natural History (Martinsville, VA)

Patent Number(s):: 8,673,256

Application Number:: 13/361,215

OSTI ID:: 1128516

Country of Publication:: United States

Language:: English

References (20)

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Carbonation of metal silicates for long-term CO2 sequestration Blencoe, James G.; Palmer, Donald A.; Anovitz, Lawrence M. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8114374 US Patent Document 8,114,374	patent	February 2012
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Cited By (2)

Carbon dioxide sequestration involving two-salt-based thermolytic processes Jones, Joe David; Yablonsky, Al https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9359221 US Patent Document 9,359,221	patent	June 2016
Removing carbon dioxide from waste streams through co-generation of carbonate and/or bicarbonate minerals Jones, Joe David; St. Angelo, David https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9205375 US Patent Document 9,205,375	patent	December 2015

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