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

Abstract

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).

Inventors:
; ; ;
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1650810
Patent Number(s):
10632418
Application Number:
15/635,950
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 06/28/2017
Country of Publication:
United States
Language:
English

Citation Formats

Blencoe, James G., Palmer, Donald A., Anovitz, Lawrence M., and Beard, James S.. Carbonation of metal silicates for long-term CO2 sequestration. United States: N. p., 2020. Web.
Blencoe, James G., Palmer, Donald A., Anovitz, Lawrence M., & Beard, James S.. Carbonation of metal silicates for long-term CO2 sequestration. United States.
Blencoe, James G., Palmer, Donald A., Anovitz, Lawrence M., and Beard, James S.. Tue . "Carbonation of metal silicates for long-term CO2 sequestration". United States. https://www.osti.gov/servlets/purl/1650810.
@article{osti_1650810,
title = {Carbonation of metal silicates for long-term CO2 sequestration},
author = {Blencoe, James G. and Palmer, Donald A. and Anovitz, Lawrence M. and Beard, James S.},
abstractNote = {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).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {4}
}

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Works referenced in this record:

Carbonation of metal silicates for long-term CO2 sequestration
patent, February 2012


Method for coproducing calcium carbonate and sodium hydroxide
patent, November 1999


Recovery of magnesium from magnesium silicates
patent, November 1978


Carbonation of metal silicates for long-term CO2 sequestration
patent, March 2014