Membrane electrolysis for the removal of Na+ from brines for the subsequent recovery of lithium salts

Vista sencilla de ítem
dc.creatorDíaz Nieto, César Horacio
dc.creatorRabaey, Korneel
dc.creatorFlexer, Victoria
dc.date2020-12
dc.date.accessioned2026-03-10T03:51:19Z
dc.date.available2026-03-10T03:51:19Z
dc.descriptionLithium-rich continental brines are highly saline solutions with total dissolved solids in the order 300 g L−1 , but Li+ concentrations around 1% only. A drastic increase in the ratio of Li+ to other cations’ concentration is a must for an efficient lithium recovery. Here we present results on the use of membrane electrolysis coupled to crystallization as a new methodology to separate a large share of Na+ present in a real brine sample. In a 3- compartment reactor, cations selectively migrate from the middle compartment through a cation exchange membrane to the cathodic compartment, where water electrolysis produces alkalinisation, and through CO2 spurging sodium bicarbonate precipitation is triggered. By following the real time concentrations in middle and cathodic compartments, we were able to prove the proposed methodology, and recover a solid with a purity of 99.5%. A coulombic efficiency of (95 ± 5)% was calculated, and the separation coefficients showed a preferential migration in the order K+ > Na+ > Li+. The methodology produces fresh water as a by-product, with total salinity 2 orders of magnitude lower than the feed. 3 different applied current density values were tested. At 10 A m−2 , 331.3 kWh are needed to treat 1 m3 of brine.
dc.descriptionFil: 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
dc.descriptionFil: Rabaey, Korneel. University of Ghent; Bélgica
dc.descriptionFil: 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
dc.formatapplication/pdf
dc.formatapplication/vnd.openxmlformats-officedocument.wordprocessingml.document
dc.formatapplication/pdf
dc.identifierhttp://hdl.handle.net/11336/231324
dc.identifierDíaz Nieto, César Horacio; Rabaey, Korneel; Flexer, Victoria; Membrane electrolysis for the removal of Na+ from brines for the subsequent recovery of lithium salts; Elsevier Science; Separation and Purification Technology; 252; 12-2020; 1-10
dc.identifier1383-5866
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://ri.unju.edu.ar/handle/123456789/592
dc.languageeng
dc.publisherElsevier Science
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.seppur.2020.117410
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1383586620318840
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subjectSUSTAINABLE MINING
dc.subjectRAW MATERIALS
dc.subjectMEMBRANE-ELECTROLYSIS
dc.subjectSODIUM CARBONATE
dc.subjectLITHIUM RECOVERY
dc.subjecthttps://purl.org/becyt/ford/1.4
dc.subjecthttps://purl.org/becyt/ford/1
dc.titleMembrane electrolysis for the removal of Na+ from brines for the subsequent recovery of lithium salts
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion
Archivos
CC BY-NC-SA 4.0 Excepto donde se diga explícitamente, este ítem se publica bajo la siguiente licencia: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
Colecciones
Artículos científicos(CIDMEJU)