CO2 sequestration by magnesite mineralisation through interaction of Mg-brine and CO2: integrated laboratory experiments and computerised geochemical modelling

Several Carbon Capture and Storage (CCS) techniques have been studied including injections of carbon dioxide (CO 2 ) into the mature and/or depleted hydrocarbon reservoirs and deep saline aquifers. This work aims to test storing CO 2 into the magnesium-rich evaporite strata and also into the stratig...

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Bibliographic Details
Published inInternational journal of environmental studies Vol. 77; no. 3; pp. 492 - 509
Main Authors Klunk, Marcos Antônio, Shah, Zeban, Caetano, Nattan Roberto, Conceição, Rommulo Vieira, Wander, Paulo Roberto, Dasgupta, Sudipta, Das, Mohuli
Format Journal Article
LanguageEnglish
Published New York Routledge 03.05.2020
Gordon and Breach Science Publishers
Subjects
Aquifers
bischofite
Brines
Carbon dioxide
Carbon sequestration
Carbonation
Computer simulation
Crystallization
Environmental science
Environmental studies
Experiments
geochemical modelling
Geochemistry
Geology
Laboratories
Magnesite
Magnesium
Magnesium carbonate
Mineral carbonation
Mineralization
Model testing
Saline water
Strata
Stratigraphy
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Summary:Several Carbon Capture and Storage (CCS) techniques have been studied including injections of carbon dioxide (CO 2 ) into the mature and/or depleted hydrocarbon reservoirs and deep saline aquifers. This work aims to test storing CO 2 into the magnesium-rich evaporite strata and also into the stratigraphic intervals containing Mg-rich brines. The test simulates Mg-carbonation of the synthetic solution obtained from the Mg-evaporite mineral, bischofite - both experimentally in the laboratory condition and also through computerised geochemical simulation. The laboratory experiments, which resulted in the crystallisation of anhydrous magnesite, were analysed. The TOUGHREACT TM , Geochemist's Workbench TM (GWB) and PHREEQC TM software simulated the experiments as computerised geochemical model and tested the results for natural geological conditions. The geochemical simulations successfully demonstrate the immense CCS potential for the Mg-evaporite (as well as the sedimentary strata charged with Mg-evaporitic brine) at their subsurface geological occurrences at elevated pressure-temperature and high salinity.
ISSN:0020-7233
1029-0400
DOI:10.1080/00207233.2019.1675295