Serpentine and single stage mineral carbonation for the storage of carbon dioxide
Abstract: Mineral carbonation is the formation of stable calcium, magnesium, and iron carbonates from the reaction between the metals in common minerals and carbon dioxide. The benign and longterm nature of this CO2 sequestration option has led to ongoing research efforts. Magnesium silicates such a...
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ftunivacaribe:oai:localhost:11619/1380 2023-05-15T15:52:46+02:00 Serpentine and single stage mineral carbonation for the storage of carbon dioxide Alexander, George Maroto Valer, Mercedes Enero - Julio http://hdl.handle.net/11619/1380 es spa Universidad Autónoma del Caribe Vol. 6 No. 1 Pág. 7-10 1692-8261 http://hdl.handle.net/11619/1380 Carbon Dioxide Sequestration Serpentine Article ftunivacaribe 2022-06-19T13:15:21Z Abstract: Mineral carbonation is the formation of stable calcium, magnesium, and iron carbonates from the reaction between the metals in common minerals and carbon dioxide. The benign and longterm nature of this CO2 sequestration option has led to ongoing research efforts. Magnesium silicates such as olivine and serpentine have been the focus of mineral carbonation research for the sequestration of CO2 for over a decade. The aqueous carbonation route has received more attention over simpler solid-gas reactions due to reaction kinetics and carbonation conversion efficiencies. However, the removal of magnesium from the magnesium silicate matrix remains as a challenge for the aqueous carbonation scheme. Strong acids such as sulfuric and hydrochloric acid have been used to improve upon the rate limiting step of magnesium removal. Although the use of an acid-accelerating medium can improve the reaction kinetics and reduce the reaction pressures and temperatures, it requires an additional step. Reagents are required to raise the pH to support carbonation, therefore imparting costs to the reaction process that, to date, are prohibitive. Our preliminary investigations have demonstrated that serpentine has the intrinsic ability to buffer against the acidic conditions resulting from the dissolution via carbonic acid, while leaching magnesium into solution for subsequent carbon storage. Article in Journal/Newspaper Carbonic acid Universidad Autónoma del Caribe (UAC): Repositorio Digital |
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Open Polar |
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Universidad Autónoma del Caribe (UAC): Repositorio Digital |
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ftunivacaribe |
language |
Spanish |
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Carbon Dioxide Sequestration Serpentine |
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Carbon Dioxide Sequestration Serpentine Alexander, George Maroto Valer, Mercedes Serpentine and single stage mineral carbonation for the storage of carbon dioxide |
topic_facet |
Carbon Dioxide Sequestration Serpentine |
description |
Abstract: Mineral carbonation is the formation of stable calcium, magnesium, and iron carbonates from the reaction between the metals in common minerals and carbon dioxide. The benign and longterm nature of this CO2 sequestration option has led to ongoing research efforts. Magnesium silicates such as olivine and serpentine have been the focus of mineral carbonation research for the sequestration of CO2 for over a decade. The aqueous carbonation route has received more attention over simpler solid-gas reactions due to reaction kinetics and carbonation conversion efficiencies. However, the removal of magnesium from the magnesium silicate matrix remains as a challenge for the aqueous carbonation scheme. Strong acids such as sulfuric and hydrochloric acid have been used to improve upon the rate limiting step of magnesium removal. Although the use of an acid-accelerating medium can improve the reaction kinetics and reduce the reaction pressures and temperatures, it requires an additional step. Reagents are required to raise the pH to support carbonation, therefore imparting costs to the reaction process that, to date, are prohibitive. Our preliminary investigations have demonstrated that serpentine has the intrinsic ability to buffer against the acidic conditions resulting from the dissolution via carbonic acid, while leaching magnesium into solution for subsequent carbon storage. |
format |
Article in Journal/Newspaper |
author |
Alexander, George Maroto Valer, Mercedes |
author_facet |
Alexander, George Maroto Valer, Mercedes |
author_sort |
Alexander, George |
title |
Serpentine and single stage mineral carbonation for the storage of carbon dioxide |
title_short |
Serpentine and single stage mineral carbonation for the storage of carbon dioxide |
title_full |
Serpentine and single stage mineral carbonation for the storage of carbon dioxide |
title_fullStr |
Serpentine and single stage mineral carbonation for the storage of carbon dioxide |
title_full_unstemmed |
Serpentine and single stage mineral carbonation for the storage of carbon dioxide |
title_sort |
serpentine and single stage mineral carbonation for the storage of carbon dioxide |
publisher |
Universidad Autónoma del Caribe |
publishDate |
|
url |
http://hdl.handle.net/11619/1380 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
Vol. 6 No. 1 Pág. 7-10 1692-8261 http://hdl.handle.net/11619/1380 |
_version_ |
1766387872303153152 |