Carbon dioxide chemical sequestration from industrial emissions by carbonation
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United States of America Patent
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Dec 11, 2018
Grant Date -
Nov 17, 2016
app pub date -
Jul 28, 2016
filing date -
Mar 7, 2012
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Abstract
Techniques are described for chemical sequestration of carbon dioxide and production of precipitated magnesium carbonate. The process can include contacting carbon dioxide from industrial emissions with water and magnesium-containing particulate material, such as serpentinite, which is thermally pre-treated and has a particle size of at most 75 microns. The process can also include separation of the loaded aqueous stream from the solids, followed by precipitation of magnesium carbonate material that includes carbon and oxygen from industrial emissions and magnesium from serpentinite or chrysotile mining residue, for example.
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