Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutions

Autores
de Micco, Georgina; Pomiro, Fernando; Grau, Javier Mario; Bohe, Ana Ester
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Spent catalysts, chemical traps and sorbents are types of solid wastes generated worldwide, which contain potentially valuable or environmentally hazardous materials that need to be recovered before final deposition. Chlorination and electrolysis are unit processes applied in extractive metallurgy for metal extraction from poly-metallic or low-grade ores. The primary aim of this study was to assess the possibility of applying pyrometallurgy (chlorination) and electrometallurgy to spent chemical sorbents used as sulfur traps and to recover zinc. The spent sorbents may include zinc in different phases: ZnO, ZnS and Zn0.65Al 0.35(OH)2(CO3)0.167(H2O)0.5. It was found that 96.8% of the zinc can be separated by dry chlorination at 475ºC with pure chlorine. Before chlorination, addition of CaCO3 (17 wt.%) is necessary to prevent formation of ZnSO4. The zinc chloride obtained is dissolved in water and electrolyzed to generate chlorine which can be recycled to the chlorination reactor, and metallic zinc as a non-adherent layer on the cathode. The electrolyte composition is 65 g.L−1 ZnCl2 with 20 g.L−1 H3BO3 and 200 g.L−1 KCl. It is possible to recover pure zinc (99.9 wt.%) from chemical sorbents with the methodology proposed. These results are important for the development of new and more efficient recovery strategies to prevent environmental damage and obtain valuable elements from wastes
Fil: de Micco, Georgina. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Física de Metales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Pomiro, Fernando. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Gerencia de Investigación y Aplicaciones; Argentina
Fil: Grau, Javier Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Bohe, Ana Ester. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
Materia
CATALYST
CHLORINATION
WASTE TREATMENT
ELECTROCHEMISTRY
ZINC
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/63498
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/63498
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutionsde Micco, GeorginaPomiro, FernandoGrau, Javier MarioBohe, Ana EsterCATALYSTCHLORINATIONWASTE TREATMENTELECTROCHEMISTRYZINChttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Spent catalysts, chemical traps and sorbents are types of solid wastes generated worldwide, which contain potentially valuable or environmentally hazardous materials that need to be recovered before final deposition. Chlorination and electrolysis are unit processes applied in extractive metallurgy for metal extraction from poly-metallic or low-grade ores. The primary aim of this study was to assess the possibility of applying pyrometallurgy (chlorination) and electrometallurgy to spent chemical sorbents used as sulfur traps and to recover zinc. The spent sorbents may include zinc in different phases: ZnO, ZnS and Zn0.65Al 0.35(OH)2(CO3)0.167(H2O)0.5. It was found that 96.8% of the zinc can be separated by dry chlorination at 475ºC with pure chlorine. Before chlorination, addition of CaCO3 (17 wt.%) is necessary to prevent formation of ZnSO4. The zinc chloride obtained is dissolved in water and electrolyzed to generate chlorine which can be recycled to the chlorination reactor, and metallic zinc as a non-adherent layer on the cathode. The electrolyte composition is 65 g.L−1 ZnCl2 with 20 g.L−1 H3BO3 and 200 g.L−1 KCl. It is possible to recover pure zinc (99.9 wt.%) from chemical sorbents with the methodology proposed. These results are important for the development of new and more efficient recovery strategies to prevent environmental damage and obtain valuable elements from wastesFil: de Micco, Georgina. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Física de Metales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Pomiro, Fernando. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Gerencia de Investigación y Aplicaciones; ArgentinaFil: Grau, Javier Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Bohe, Ana Ester. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; ArgentinaSCIENCEDOMAIN international2017-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63498de Micco, Georgina; Pomiro, Fernando; Grau, Javier Mario; Bohe, Ana Ester; Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutions; SCIENCEDOMAIN international; International Research Journal of Pure and Applied Chemistry; 14; 3; 1-2017; 1-132231-3443CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedomain.org/abstract/20170info:eu-repo/semantics/altIdentifier/doi/10.9734/IRJPAC/2017/35288info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:15:21Zoai:ri.conicet.gov.ar:11336/63498instacron: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 10:15:21.977CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutions
title Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutions
spellingShingle Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutions
de Micco, Georgina
CATALYST
CHLORINATION
WASTE TREATMENT
ELECTROCHEMISTRY
ZINC
title_short Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutions
title_full Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutions
title_fullStr Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutions
title_full_unstemmed Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutions
title_sort Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutions
dc.creator.none.fl_str_mv de Micco, Georgina
Pomiro, Fernando
Grau, Javier Mario
Bohe, Ana Ester
author de Micco, Georgina
author_facet de Micco, Georgina
Pomiro, Fernando
Grau, Javier Mario
Bohe, Ana Ester
author_role author
author2 Pomiro, Fernando
Grau, Javier Mario
Bohe, Ana Ester
author2_role author
author
author
dc.subject.none.fl_str_mv CATALYST
CHLORINATION
WASTE TREATMENT
ELECTROCHEMISTRY
ZINC
topic CATALYST
CHLORINATION
WASTE TREATMENT
ELECTROCHEMISTRY
ZINC
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Spent catalysts, chemical traps and sorbents are types of solid wastes generated worldwide, which contain potentially valuable or environmentally hazardous materials that need to be recovered before final deposition. Chlorination and electrolysis are unit processes applied in extractive metallurgy for metal extraction from poly-metallic or low-grade ores. The primary aim of this study was to assess the possibility of applying pyrometallurgy (chlorination) and electrometallurgy to spent chemical sorbents used as sulfur traps and to recover zinc. The spent sorbents may include zinc in different phases: ZnO, ZnS and Zn0.65Al 0.35(OH)2(CO3)0.167(H2O)0.5. It was found that 96.8% of the zinc can be separated by dry chlorination at 475ºC with pure chlorine. Before chlorination, addition of CaCO3 (17 wt.%) is necessary to prevent formation of ZnSO4. The zinc chloride obtained is dissolved in water and electrolyzed to generate chlorine which can be recycled to the chlorination reactor, and metallic zinc as a non-adherent layer on the cathode. The electrolyte composition is 65 g.L−1 ZnCl2 with 20 g.L−1 H3BO3 and 200 g.L−1 KCl. It is possible to recover pure zinc (99.9 wt.%) from chemical sorbents with the methodology proposed. These results are important for the development of new and more efficient recovery strategies to prevent environmental damage and obtain valuable elements from wastes
Fil: de Micco, Georgina. Comision Nacional de Energía Atómica. Gerencia de Área Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Física de Metales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Pomiro, Fernando. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes. Gerencia de Investigación y Aplicaciones; Argentina
Fil: Grau, Javier Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Bohe, Ana Ester. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
description Spent catalysts, chemical traps and sorbents are types of solid wastes generated worldwide, which contain potentially valuable or environmentally hazardous materials that need to be recovered before final deposition. Chlorination and electrolysis are unit processes applied in extractive metallurgy for metal extraction from poly-metallic or low-grade ores. The primary aim of this study was to assess the possibility of applying pyrometallurgy (chlorination) and electrometallurgy to spent chemical sorbents used as sulfur traps and to recover zinc. The spent sorbents may include zinc in different phases: ZnO, ZnS and Zn0.65Al 0.35(OH)2(CO3)0.167(H2O)0.5. It was found that 96.8% of the zinc can be separated by dry chlorination at 475ºC with pure chlorine. Before chlorination, addition of CaCO3 (17 wt.%) is necessary to prevent formation of ZnSO4. The zinc chloride obtained is dissolved in water and electrolyzed to generate chlorine which can be recycled to the chlorination reactor, and metallic zinc as a non-adherent layer on the cathode. The electrolyte composition is 65 g.L−1 ZnCl2 with 20 g.L−1 H3BO3 and 200 g.L−1 KCl. It is possible to recover pure zinc (99.9 wt.%) from chemical sorbents with the methodology proposed. These results are important for the development of new and more efficient recovery strategies to prevent environmental damage and obtain valuable elements from wastes
publishDate 2017
dc.date.none.fl_str_mv 2017-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/63498
de Micco, Georgina; Pomiro, Fernando; Grau, Javier Mario; Bohe, Ana Ester; Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutions; SCIENCEDOMAIN international; International Research Journal of Pure and Applied Chemistry; 14; 3; 1-2017; 1-13
2231-3443
CONICET Digital
CONICET
url http://hdl.handle.net/11336/63498
identifier_str_mv de Micco, Georgina; Pomiro, Fernando; Grau, Javier Mario; Bohe, Ana Ester; Zinc Recovery from Spent Chemical Sorbent by Dry Chlorination and Electrodeposition from Chloride Solutions; SCIENCEDOMAIN international; International Research Journal of Pure and Applied Chemistry; 14; 3; 1-2017; 1-13
2231-3443
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedomain.org/abstract/20170
info:eu-repo/semantics/altIdentifier/doi/10.9734/IRJPAC/2017/35288
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv SCIENCEDOMAIN international
publisher.none.fl_str_mv SCIENCEDOMAIN international
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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