Leaching optimization of mining wastes with lizardite and brucite contents for use in indirect mineral carbonation through the pH swing method

Detalhes bibliográficos
Autor(a) principal: Arce, Gretta L.A.F. [UNESP]
Data de Publicação: 2017
Outros Autores: Soares Neto, Turibio G., Ávila, I. [UNESP], Luna, Carlos M.R. [UNESP], Carvalho, João A. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.jclepro.2016.09.204
http://hdl.handle.net/11449/173757
Resumo: This study investigated the leaching process in order to maximize Mg and Fe extraction and to produce amorphous silica (SiO2) with high purity. For this, a mining waste identified as S-GO was employed; which is a serpentinite rock with high lizardite 1T and native brucite contents. A Taguchi Experiment Design was used in order to assess the parameters that influence the leaching process such as: granulometry, hydrochloric acid concentration (HCl), leaching temperature, and mass/volume ratio. Furthermore, thermogravimetric analysis (TGA) was done to understand the interrelation between the mineral structure and leaching performance. Results show that lizardite 1T-bearing serpentinite presents a low content of tetrahedral Al3+ and high octahedral Fe3+ contents on S-GO. Native brucite delayed the formation of a hydrated silica layer and improved dissolution of serpentines. For this, Mg and Fe extractions are efficient, reaching 88 ± 2% of Mg and Fe extracted during the first 30 min of reaction, under mild process conditions: stoichiometric mass/volume ratio, 1M HCl concentration, pressure of 1 bar, temperature of 100 °C, and 300 μm particle size. On the other hand, an excess of acid improves Mg and Fe extraction by only 10 ± 5% for S-GO. Such characteristics reduce energetic penalties and costs involved on indirect mineral carbonation processes by the pH swing method.
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spelling Leaching optimization of mining wastes with lizardite and brucite contents for use in indirect mineral carbonation through the pH swing methodBruciteIronLeachingLizarditeMineral carbonationMining wasteThis study investigated the leaching process in order to maximize Mg and Fe extraction and to produce amorphous silica (SiO2) with high purity. For this, a mining waste identified as S-GO was employed; which is a serpentinite rock with high lizardite 1T and native brucite contents. A Taguchi Experiment Design was used in order to assess the parameters that influence the leaching process such as: granulometry, hydrochloric acid concentration (HCl), leaching temperature, and mass/volume ratio. Furthermore, thermogravimetric analysis (TGA) was done to understand the interrelation between the mineral structure and leaching performance. Results show that lizardite 1T-bearing serpentinite presents a low content of tetrahedral Al3+ and high octahedral Fe3+ contents on S-GO. Native brucite delayed the formation of a hydrated silica layer and improved dissolution of serpentines. For this, Mg and Fe extractions are efficient, reaching 88 ± 2% of Mg and Fe extracted during the first 30 min of reaction, under mild process conditions: stoichiometric mass/volume ratio, 1M HCl concentration, pressure of 1 bar, temperature of 100 °C, and 300 μm particle size. On the other hand, an excess of acid improves Mg and Fe extraction by only 10 ± 5% for S-GO. Such characteristics reduce energetic penalties and costs involved on indirect mineral carbonation processes by the pH swing method.INPE – National Institute for Space Research Combustion and Propulsion Associated Laboratory, Rodovía Presidente Dutra, km 40UNESP – Univ Estadual Paulista Guaratinguetá Engineering Campus Department of Energy Combustion and Carbon Capture Laboratory (LC3), Av. Dr. Ariberto Pereira da Cunha, 333UNESP – Univ Estadual Paulista Guaratinguetá Engineering Campus Department of Energy Combustion and Carbon Capture Laboratory (LC3), Av. Dr. Ariberto Pereira da Cunha, 333Combustion and Propulsion Associated LaboratoryUniversidade Estadual Paulista (Unesp)Arce, Gretta L.A.F. [UNESP]Soares Neto, Turibio G.Ávila, I. [UNESP]Luna, Carlos M.R. [UNESP]Carvalho, João A. [UNESP]2018-12-11T17:07:36Z2018-12-11T17:07:36Z2017-01-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1324-1336application/pdfhttp://dx.doi.org/10.1016/j.jclepro.2016.09.204Journal of Cleaner Production, v. 141, p. 1324-1336.0959-6526http://hdl.handle.net/11449/17375710.1016/j.jclepro.2016.09.2042-s2.0-849946272262-s2.0-84994627226.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Cleaner Production1,467info:eu-repo/semantics/openAccess2024-07-01T19:30:01Zoai:repositorio.unesp.br:11449/173757Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:01:44.318454Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Leaching optimization of mining wastes with lizardite and brucite contents for use in indirect mineral carbonation through the pH swing method
title Leaching optimization of mining wastes with lizardite and brucite contents for use in indirect mineral carbonation through the pH swing method
spellingShingle Leaching optimization of mining wastes with lizardite and brucite contents for use in indirect mineral carbonation through the pH swing method
Arce, Gretta L.A.F. [UNESP]
Brucite
Iron
Leaching
Lizardite
Mineral carbonation
Mining waste
title_short Leaching optimization of mining wastes with lizardite and brucite contents for use in indirect mineral carbonation through the pH swing method
title_full Leaching optimization of mining wastes with lizardite and brucite contents for use in indirect mineral carbonation through the pH swing method
title_fullStr Leaching optimization of mining wastes with lizardite and brucite contents for use in indirect mineral carbonation through the pH swing method
title_full_unstemmed Leaching optimization of mining wastes with lizardite and brucite contents for use in indirect mineral carbonation through the pH swing method
title_sort Leaching optimization of mining wastes with lizardite and brucite contents for use in indirect mineral carbonation through the pH swing method
author Arce, Gretta L.A.F. [UNESP]
author_facet Arce, Gretta L.A.F. [UNESP]
Soares Neto, Turibio G.
Ávila, I. [UNESP]
Luna, Carlos M.R. [UNESP]
Carvalho, João A. [UNESP]
author_role author
author2 Soares Neto, Turibio G.
Ávila, I. [UNESP]
Luna, Carlos M.R. [UNESP]
Carvalho, João A. [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Combustion and Propulsion Associated Laboratory
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Arce, Gretta L.A.F. [UNESP]
Soares Neto, Turibio G.
Ávila, I. [UNESP]
Luna, Carlos M.R. [UNESP]
Carvalho, João A. [UNESP]
dc.subject.por.fl_str_mv Brucite
Iron
Leaching
Lizardite
Mineral carbonation
Mining waste
topic Brucite
Iron
Leaching
Lizardite
Mineral carbonation
Mining waste
description This study investigated the leaching process in order to maximize Mg and Fe extraction and to produce amorphous silica (SiO2) with high purity. For this, a mining waste identified as S-GO was employed; which is a serpentinite rock with high lizardite 1T and native brucite contents. A Taguchi Experiment Design was used in order to assess the parameters that influence the leaching process such as: granulometry, hydrochloric acid concentration (HCl), leaching temperature, and mass/volume ratio. Furthermore, thermogravimetric analysis (TGA) was done to understand the interrelation between the mineral structure and leaching performance. Results show that lizardite 1T-bearing serpentinite presents a low content of tetrahedral Al3+ and high octahedral Fe3+ contents on S-GO. Native brucite delayed the formation of a hydrated silica layer and improved dissolution of serpentines. For this, Mg and Fe extractions are efficient, reaching 88 ± 2% of Mg and Fe extracted during the first 30 min of reaction, under mild process conditions: stoichiometric mass/volume ratio, 1M HCl concentration, pressure of 1 bar, temperature of 100 °C, and 300 μm particle size. On the other hand, an excess of acid improves Mg and Fe extraction by only 10 ± 5% for S-GO. Such characteristics reduce energetic penalties and costs involved on indirect mineral carbonation processes by the pH swing method.
publishDate 2017
dc.date.none.fl_str_mv 2017-01-10
2018-12-11T17:07:36Z
2018-12-11T17:07:36Z
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://dx.doi.org/10.1016/j.jclepro.2016.09.204
Journal of Cleaner Production, v. 141, p. 1324-1336.
0959-6526
http://hdl.handle.net/11449/173757
10.1016/j.jclepro.2016.09.204
2-s2.0-84994627226
2-s2.0-84994627226.pdf
url http://dx.doi.org/10.1016/j.jclepro.2016.09.204
http://hdl.handle.net/11449/173757
identifier_str_mv Journal of Cleaner Production, v. 141, p. 1324-1336.
0959-6526
10.1016/j.jclepro.2016.09.204
2-s2.0-84994627226
2-s2.0-84994627226.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Cleaner Production
1,467
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1324-1336
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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