An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and Magnesium

Autores
Palacios, Noelia Anahí; Díaz Nieto, César Horacio; Rabaey, Korneel; Flexer, Victoria
Año de publicación
2020
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
In a context in which it is urgent to change the energy matrix dependent on fossil fuels for a more sustainable one, the reference to energy accumulation, electromobility and lithium is undeniable. Continental brines as present in a small region in South America (the Lithium Triangle), are the most abundant and the easiest to exploit with an evaporitic method [1]. Current practice is highly water and chemical intensive, and delivers besides lithium only waste to be landfilled [2,3]. Concerns about processing practices are growing, particularly with the local native population. As an alternative to the current extraction process, it is proposed an integrated membrane electrolysis process with three stages, each based on a water electrolyser with a side crystallizer. Lithium is present in diluted concentrations together with different ions, and it is imperative to fully remove both magnesium and calcium before lithium carbonate can be precipitated. In the stage I of this approach, hydroxyl groups are generated in situ in a two chamber electrochemical cell with a side crystallizer, omitting the need for chemical addition and not leading to substantial loss of lithium rich brine. The native brine is introduced into the cathodic compartment of a 2-chamber electrolyzer (AEM) like the one show in the figure. As the pH increases, Mg(OH)2 and Ca(OH)2 will quantitatively precipitate. The objective is to obtain these two salts with commercial value, avoiding that they remain as waste in the salar and minimize the amount of brine adsorbed on solids. Batch electrolysis experiments were performed and showed that for a native south american brine containing 3090 mg L-1 of Mg2+ and 685 mg L-1 of Ca2+, 62 kWh m-3 are needed for the full removal of both cations when a current density of 223 A m-2 . It is necessary to remark that the Li+ concentration in the brine is not affected. The first stage of this alternative process to the evaporitic method, not only performs the necessary removal of the divalent cations from the brine, but also allows obtaining magnesium and calcium compounds simultaneously, minimizing the production of waste.
Fil: Palacios, Noelia Anahí. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy - Universidad Nacional de Jujuy. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy - Gobierno de la Provincia de Jujuy. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy; Argentina
Fil: Díaz Nieto, César Horacio. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy. - Universidad Nacional de Jujuy. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy. - Gobierno de la Provincia de Jujuy. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy; Argentina
Fil: Rabaey, Korneel. University of Ghent; Bélgica
Fil: Flexer, Victoria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy. - Universidad Nacional de Jujuy. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy. - Gobierno de la Provincia de Jujuy. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy; Argentina
71st Annual Meeting of the International Society of Electrochemistry
Belgrade
Serbia
International Society of electrochemistry
Materia
LITHIUM
MAGNESIUM
CALCIUM
MEMBRANE ELECTROLYSIS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/241733
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and MagnesiumPalacios, Noelia AnahíDíaz Nieto, César HoracioRabaey, KorneelFlexer, VictoriaLITHIUMMAGNESIUMCALCIUMMEMBRANE ELECTROLYSIShttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1In a context in which it is urgent to change the energy matrix dependent on fossil fuels for a more sustainable one, the reference to energy accumulation, electromobility and lithium is undeniable. Continental brines as present in a small region in South America (the Lithium Triangle), are the most abundant and the easiest to exploit with an evaporitic method [1]. Current practice is highly water and chemical intensive, and delivers besides lithium only waste to be landfilled [2,3]. Concerns about processing practices are growing, particularly with the local native population. As an alternative to the current extraction process, it is proposed an integrated membrane electrolysis process with three stages, each based on a water electrolyser with a side crystallizer. Lithium is present in diluted concentrations together with different ions, and it is imperative to fully remove both magnesium and calcium before lithium carbonate can be precipitated. In the stage I of this approach, hydroxyl groups are generated in situ in a two chamber electrochemical cell with a side crystallizer, omitting the need for chemical addition and not leading to substantial loss of lithium rich brine. The native brine is introduced into the cathodic compartment of a 2-chamber electrolyzer (AEM) like the one show in the figure. As the pH increases, Mg(OH)2 and Ca(OH)2 will quantitatively precipitate. The objective is to obtain these two salts with commercial value, avoiding that they remain as waste in the salar and minimize the amount of brine adsorbed on solids. Batch electrolysis experiments were performed and showed that for a native south american brine containing 3090 mg L-1 of Mg2+ and 685 mg L-1 of Ca2+, 62 kWh m-3 are needed for the full removal of both cations when a current density of 223 A m-2 . It is necessary to remark that the Li+ concentration in the brine is not affected. The first stage of this alternative process to the evaporitic method, not only performs the necessary removal of the divalent cations from the brine, but also allows obtaining magnesium and calcium compounds simultaneously, minimizing the production of waste.Fil: Palacios, Noelia Anahí. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy - Universidad Nacional de Jujuy. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy - Gobierno de la Provincia de Jujuy. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy; ArgentinaFil: Díaz Nieto, César Horacio. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy. - Universidad Nacional de Jujuy. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy. - Gobierno de la Provincia de Jujuy. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy; ArgentinaFil: Rabaey, Korneel. University of Ghent; BélgicaFil: Flexer, Victoria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy. - Universidad Nacional de Jujuy. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy. - Gobierno de la Provincia de Jujuy. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy; Argentina71st Annual Meeting of the International Society of ElectrochemistryBelgradeSerbiaInternational Society of electrochemistryInternational Society of electrochemistry2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/241733An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and Magnesium; 71st Annual Meeting of the International Society of Electrochemistry; Belgrade; Serbia; 2020; 542-542CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://annual71.ise-online.org/index.phpinfo:eu-repo/semantics/altIdentifier/url/https://www.ise-online.org/ise-conferences/past_ISE-meetings.phpInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:47:36Zoai:ri.conicet.gov.ar:11336/241733instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:47:36.447CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and Magnesium
title An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and Magnesium
spellingShingle An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and Magnesium
Palacios, Noelia Anahí
LITHIUM
MAGNESIUM
CALCIUM
MEMBRANE ELECTROLYSIS
title_short An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and Magnesium
title_full An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and Magnesium
title_fullStr An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and Magnesium
title_full_unstemmed An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and Magnesium
title_sort An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and Magnesium
dc.creator.none.fl_str_mv Palacios, Noelia Anahí
Díaz Nieto, César Horacio
Rabaey, Korneel
Flexer, Victoria
author Palacios, Noelia Anahí
author_facet Palacios, Noelia Anahí
Díaz Nieto, César Horacio
Rabaey, Korneel
Flexer, Victoria
author_role author
author2 Díaz Nieto, César Horacio
Rabaey, Korneel
Flexer, Victoria
author2_role author
author
author
dc.subject.none.fl_str_mv LITHIUM
MAGNESIUM
CALCIUM
MEMBRANE ELECTROLYSIS
topic LITHIUM
MAGNESIUM
CALCIUM
MEMBRANE ELECTROLYSIS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In a context in which it is urgent to change the energy matrix dependent on fossil fuels for a more sustainable one, the reference to energy accumulation, electromobility and lithium is undeniable. Continental brines as present in a small region in South America (the Lithium Triangle), are the most abundant and the easiest to exploit with an evaporitic method [1]. Current practice is highly water and chemical intensive, and delivers besides lithium only waste to be landfilled [2,3]. Concerns about processing practices are growing, particularly with the local native population. As an alternative to the current extraction process, it is proposed an integrated membrane electrolysis process with three stages, each based on a water electrolyser with a side crystallizer. Lithium is present in diluted concentrations together with different ions, and it is imperative to fully remove both magnesium and calcium before lithium carbonate can be precipitated. In the stage I of this approach, hydroxyl groups are generated in situ in a two chamber electrochemical cell with a side crystallizer, omitting the need for chemical addition and not leading to substantial loss of lithium rich brine. The native brine is introduced into the cathodic compartment of a 2-chamber electrolyzer (AEM) like the one show in the figure. As the pH increases, Mg(OH)2 and Ca(OH)2 will quantitatively precipitate. The objective is to obtain these two salts with commercial value, avoiding that they remain as waste in the salar and minimize the amount of brine adsorbed on solids. Batch electrolysis experiments were performed and showed that for a native south american brine containing 3090 mg L-1 of Mg2+ and 685 mg L-1 of Ca2+, 62 kWh m-3 are needed for the full removal of both cations when a current density of 223 A m-2 . It is necessary to remark that the Li+ concentration in the brine is not affected. The first stage of this alternative process to the evaporitic method, not only performs the necessary removal of the divalent cations from the brine, but also allows obtaining magnesium and calcium compounds simultaneously, minimizing the production of waste.
Fil: Palacios, Noelia Anahí. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy - Universidad Nacional de Jujuy. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy - Gobierno de la Provincia de Jujuy. Centro de Investigación y Desarrollo en Materiales Avanzados y Almacenamiento de Energía de Jujuy; Argentina
Fil: Díaz Nieto, César Horacio. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy. - Universidad Nacional de Jujuy. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy. - Gobierno de la Provincia de Jujuy. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy; Argentina
Fil: Rabaey, Korneel. University of Ghent; Bélgica
Fil: Flexer, Victoria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy. - Universidad Nacional de Jujuy. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy. - Gobierno de la Provincia de Jujuy. Centro de Investigacion y Desarrollo En Materiales Avanzados y Almacenamiento de Energia de Jujuy; Argentina
71st Annual Meeting of the International Society of Electrochemistry
Belgrade
Serbia
International Society of electrochemistry
description In a context in which it is urgent to change the energy matrix dependent on fossil fuels for a more sustainable one, the reference to energy accumulation, electromobility and lithium is undeniable. Continental brines as present in a small region in South America (the Lithium Triangle), are the most abundant and the easiest to exploit with an evaporitic method [1]. Current practice is highly water and chemical intensive, and delivers besides lithium only waste to be landfilled [2,3]. Concerns about processing practices are growing, particularly with the local native population. As an alternative to the current extraction process, it is proposed an integrated membrane electrolysis process with three stages, each based on a water electrolyser with a side crystallizer. Lithium is present in diluted concentrations together with different ions, and it is imperative to fully remove both magnesium and calcium before lithium carbonate can be precipitated. In the stage I of this approach, hydroxyl groups are generated in situ in a two chamber electrochemical cell with a side crystallizer, omitting the need for chemical addition and not leading to substantial loss of lithium rich brine. The native brine is introduced into the cathodic compartment of a 2-chamber electrolyzer (AEM) like the one show in the figure. As the pH increases, Mg(OH)2 and Ca(OH)2 will quantitatively precipitate. The objective is to obtain these two salts with commercial value, avoiding that they remain as waste in the salar and minimize the amount of brine adsorbed on solids. Batch electrolysis experiments were performed and showed that for a native south american brine containing 3090 mg L-1 of Mg2+ and 685 mg L-1 of Ca2+, 62 kWh m-3 are needed for the full removal of both cations when a current density of 223 A m-2 . It is necessary to remark that the Li+ concentration in the brine is not affected. The first stage of this alternative process to the evaporitic method, not only performs the necessary removal of the divalent cations from the brine, but also allows obtaining magnesium and calcium compounds simultaneously, minimizing the production of waste.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
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http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/241733
An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and Magnesium; 71st Annual Meeting of the International Society of Electrochemistry; Belgrade; Serbia; 2020; 542-542
CONICET Digital
CONICET
url http://hdl.handle.net/11336/241733
identifier_str_mv An Electrochemical Alternative to Reduce the Environmental Impact of Evaporitic Lithium Extraction from Brines. Stage I: Removal of Calcium and Magnesium; 71st Annual Meeting of the International Society of Electrochemistry; Belgrade; Serbia; 2020; 542-542
CONICET Digital
CONICET
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language eng
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info:eu-repo/semantics/altIdentifier/url/https://www.ise-online.org/ise-conferences/past_ISE-meetings.php
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dc.format.none.fl_str_mv application/pdf
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dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv International Society of electrochemistry
publisher.none.fl_str_mv International Society of electrochemistry
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