Mineralogical and chemical changes induced by experiments of interaction between supercritical CO2 and plutonic mafic rocks. A case study in Portugal.
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/34308 https://doi.org/10.5194/egusphere-egu22-5158 |
Resumo: | The focus of this research is a qualitative study of mineralogical and chemical changes in plutonic mafic rock samples after exposure to a CO2-rich brine, under supercritical conditions (SC), to clarify the behavior of brine and rock in the initial stages of mineral carbonation. The studied rock consists of a gabbro-anorthosite from the Odivelas massif, in southern Portugal. The sample was exposed to a SC CO2-rich brine (P≈8 MPa, T≈40◦C) for runs of 0, 30 and 90 days. Experiments were conducted in batch mode, ie. with no CO2 flow, and with a proportion of CO2 to brine of 0.226 for 30 days and 0.033 for 90 days. In addition, numerical modeling was applied to complement the experimental observations, reproducing the experimental observations and simulate the chemical behavior for longer times. The chemical analysis of the brine, before and after, the experiment, shows: (i) increase of magnesium (Mg2+), calcium (Ca2+) and silica (SiO2) for the 30 and 90 days runs and (ii) decrease of pH (8.1 to 6.1 and 8.1 to 6.3, respectively). Experimental and numerical results indicate that the rock sample suffered a slight dissolution process with mineralogical/textural readjustments on the external area of the specimens studied. This is thought to mimic the initial dissolution process under early-stage mineral carbonation. After 90 days, apart from halite, there are no significant new mineral phases. However, the elemental association in the EDS maps of carbon and magnesium dissociated from silicon suggests the residual crystallization of magnesite. |
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Mineralogical and chemical changes induced by experiments of interaction between supercritical CO2 and plutonic mafic rocks. A case study in Portugal.Mineral carbonationGabbrosPortugalCO2 storageThe focus of this research is a qualitative study of mineralogical and chemical changes in plutonic mafic rock samples after exposure to a CO2-rich brine, under supercritical conditions (SC), to clarify the behavior of brine and rock in the initial stages of mineral carbonation. The studied rock consists of a gabbro-anorthosite from the Odivelas massif, in southern Portugal. The sample was exposed to a SC CO2-rich brine (P≈8 MPa, T≈40◦C) for runs of 0, 30 and 90 days. Experiments were conducted in batch mode, ie. with no CO2 flow, and with a proportion of CO2 to brine of 0.226 for 30 days and 0.033 for 90 days. In addition, numerical modeling was applied to complement the experimental observations, reproducing the experimental observations and simulate the chemical behavior for longer times. The chemical analysis of the brine, before and after, the experiment, shows: (i) increase of magnesium (Mg2+), calcium (Ca2+) and silica (SiO2) for the 30 and 90 days runs and (ii) decrease of pH (8.1 to 6.1 and 8.1 to 6.3, respectively). Experimental and numerical results indicate that the rock sample suffered a slight dissolution process with mineralogical/textural readjustments on the external area of the specimens studied. This is thought to mimic the initial dissolution process under early-stage mineral carbonation. After 90 days, apart from halite, there are no significant new mineral phases. However, the elemental association in the EDS maps of carbon and magnesium dissociated from silicon suggests the residual crystallization of magnesite.European Geosciences Union2023-02-14T11:39:41Z2023-02-142022-04-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/34308http://hdl.handle.net/10174/34308https://doi.org/10.5194/egusphere-egu22-5158porMoita, P., Berrezueta, E., Abdoulghafour, H., Beltrame, M., Mirão, J., Ribeiro, C., . . . Carneiro, J. (2022). Mineralogical and chemical changes induced by experiments of interaction between supercritical CO2 and plutonic mafic rocks. A case study in Portugal. Paper presented at the EGU General Assembly 2022,, Vienna, Austria.ndndndndndndndndjcarneiro@uevora.ptMoita, PatriciaBerrezueta, EdgarAbdoulghafour, HalidiBeltrame, MassimoMirão, JoséRibeiro, CarlosBarrulas, PedroPedro, JorgeCarneiro, Júlioinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:36:58Zoai:dspace.uevora.pt:10174/34308Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:23:00.218781Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Mineralogical and chemical changes induced by experiments of interaction between supercritical CO2 and plutonic mafic rocks. A case study in Portugal. |
title |
Mineralogical and chemical changes induced by experiments of interaction between supercritical CO2 and plutonic mafic rocks. A case study in Portugal. |
spellingShingle |
Mineralogical and chemical changes induced by experiments of interaction between supercritical CO2 and plutonic mafic rocks. A case study in Portugal. Moita, Patricia Mineral carbonation Gabbros Portugal CO2 storage |
title_short |
Mineralogical and chemical changes induced by experiments of interaction between supercritical CO2 and plutonic mafic rocks. A case study in Portugal. |
title_full |
Mineralogical and chemical changes induced by experiments of interaction between supercritical CO2 and plutonic mafic rocks. A case study in Portugal. |
title_fullStr |
Mineralogical and chemical changes induced by experiments of interaction between supercritical CO2 and plutonic mafic rocks. A case study in Portugal. |
title_full_unstemmed |
Mineralogical and chemical changes induced by experiments of interaction between supercritical CO2 and plutonic mafic rocks. A case study in Portugal. |
title_sort |
Mineralogical and chemical changes induced by experiments of interaction between supercritical CO2 and plutonic mafic rocks. A case study in Portugal. |
author |
Moita, Patricia |
author_facet |
Moita, Patricia Berrezueta, Edgar Abdoulghafour, Halidi Beltrame, Massimo Mirão, José Ribeiro, Carlos Barrulas, Pedro Pedro, Jorge Carneiro, Júlio |
author_role |
author |
author2 |
Berrezueta, Edgar Abdoulghafour, Halidi Beltrame, Massimo Mirão, José Ribeiro, Carlos Barrulas, Pedro Pedro, Jorge Carneiro, Júlio |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Moita, Patricia Berrezueta, Edgar Abdoulghafour, Halidi Beltrame, Massimo Mirão, José Ribeiro, Carlos Barrulas, Pedro Pedro, Jorge Carneiro, Júlio |
dc.subject.por.fl_str_mv |
Mineral carbonation Gabbros Portugal CO2 storage |
topic |
Mineral carbonation Gabbros Portugal CO2 storage |
description |
The focus of this research is a qualitative study of mineralogical and chemical changes in plutonic mafic rock samples after exposure to a CO2-rich brine, under supercritical conditions (SC), to clarify the behavior of brine and rock in the initial stages of mineral carbonation. The studied rock consists of a gabbro-anorthosite from the Odivelas massif, in southern Portugal. The sample was exposed to a SC CO2-rich brine (P≈8 MPa, T≈40◦C) for runs of 0, 30 and 90 days. Experiments were conducted in batch mode, ie. with no CO2 flow, and with a proportion of CO2 to brine of 0.226 for 30 days and 0.033 for 90 days. In addition, numerical modeling was applied to complement the experimental observations, reproducing the experimental observations and simulate the chemical behavior for longer times. The chemical analysis of the brine, before and after, the experiment, shows: (i) increase of magnesium (Mg2+), calcium (Ca2+) and silica (SiO2) for the 30 and 90 days runs and (ii) decrease of pH (8.1 to 6.1 and 8.1 to 6.3, respectively). Experimental and numerical results indicate that the rock sample suffered a slight dissolution process with mineralogical/textural readjustments on the external area of the specimens studied. This is thought to mimic the initial dissolution process under early-stage mineral carbonation. After 90 days, apart from halite, there are no significant new mineral phases. However, the elemental association in the EDS maps of carbon and magnesium dissociated from silicon suggests the residual crystallization of magnesite. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-01T00:00:00Z 2023-02-14T11:39:41Z 2023-02-14 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/34308 http://hdl.handle.net/10174/34308 https://doi.org/10.5194/egusphere-egu22-5158 |
url |
http://hdl.handle.net/10174/34308 https://doi.org/10.5194/egusphere-egu22-5158 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Moita, P., Berrezueta, E., Abdoulghafour, H., Beltrame, M., Mirão, J., Ribeiro, C., . . . Carneiro, J. (2022). Mineralogical and chemical changes induced by experiments of interaction between supercritical CO2 and plutonic mafic rocks. A case study in Portugal. Paper presented at the EGU General Assembly 2022,, Vienna, Austria. nd nd nd nd nd nd nd nd jcarneiro@uevora.pt |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
European Geosciences Union |
publisher.none.fl_str_mv |
European Geosciences Union |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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