Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing Ore

Autores
Marchevsky, Natalia Judith; Urbieta, María Sofía; Bernardelli, Cecilia Elena; Mas, Miguel; Donati, Edgardo Ruben
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Mesophilic bacteria were enriched from samples collected from acid mine drainages in La Carolina(San Luis, Argentina). Two enrichments, E1 and E2, showed suitable rates of iron or sulphur oxidation, respectively. Both enrichment cultures were characterized by FISH and they were mainly composed by Leptospirillum ferrooxidans and Acidithiobacillus ferrooxidans. Studies with both,mixed and individual enrichment cultures, showed biooxidation (measured as iron solubilisation) of a refractory gold-bearing pyrite ore from Hualilán (San Juan, Argentina). Pyrite and sphalerite were the main mineral species in the ore with 7 % w/w and 8 % w/w of iron and zinc and approximately 25 ppm of gold. Leaching experiments (2 % w/v ore, 1.8 initial pH, 180 rpm and 30°C) were carried out with the addition of different alternative energy sources (6.67 g/L sulphur powder, 1 g/L iron(II), 0.02% w/v yeast extract). Redox potential, pH, iron(II) concentration and total Fe and Zn were measured regularly. A 100% of iron leaching (after 28 days in the best experimental condition) was observed in some of the cultures. In other systems high zinc release was obtained (100% of dissolution after 28 days in the best experimental condition). Our results strongly suggest that under the correct operating conditions, biooxidation pre-treatment can be used to recover zinc as a subproduct of gold extraction from refractory ore
Fil: Marchevsky, Natalia Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales (i); Argentina. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Mineria; Argentina
Fil: Urbieta, María Sofía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales (i); Argentina
Fil: Bernardelli, Cecilia Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales (i); Argentina
Fil: Mas, Miguel. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Mineria; Argentina
Fil: Donati, Edgardo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales (i); Argentina
Materia
Biooxidation
Zinc
Bioleaching
Gold
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:11336/4313
Acceder
id CONICETDig_34f61226a3b2d2dc843083db053c0b42
oai_identifier_str oai:ri.conicet.gov.ar:11336/4313
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing OreMarchevsky, Natalia JudithUrbieta, María SofíaBernardelli, Cecilia ElenaMas, MiguelDonati, Edgardo RubenBiooxidationZincBioleachingGoldhttps://purl.org/becyt/ford/2.7https://purl.org/becyt/ford/2Mesophilic bacteria were enriched from samples collected from acid mine drainages in La Carolina(San Luis, Argentina). Two enrichments, E1 and E2, showed suitable rates of iron or sulphur oxidation, respectively. Both enrichment cultures were characterized by FISH and they were mainly composed by Leptospirillum ferrooxidans and Acidithiobacillus ferrooxidans. Studies with both,mixed and individual enrichment cultures, showed biooxidation (measured as iron solubilisation) of a refractory gold-bearing pyrite ore from Hualilán (San Juan, Argentina). Pyrite and sphalerite were the main mineral species in the ore with 7 % w/w and 8 % w/w of iron and zinc and approximately 25 ppm of gold. Leaching experiments (2 % w/v ore, 1.8 initial pH, 180 rpm and 30°C) were carried out with the addition of different alternative energy sources (6.67 g/L sulphur powder, 1 g/L iron(II), 0.02% w/v yeast extract). Redox potential, pH, iron(II) concentration and total Fe and Zn were measured regularly. A 100% of iron leaching (after 28 days in the best experimental condition) was observed in some of the cultures. In other systems high zinc release was obtained (100% of dissolution after 28 days in the best experimental condition). Our results strongly suggest that under the correct operating conditions, biooxidation pre-treatment can be used to recover zinc as a subproduct of gold extraction from refractory oreFil: Marchevsky, Natalia Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales (i); Argentina. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Mineria; ArgentinaFil: Urbieta, María Sofía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales (i); ArgentinaFil: Bernardelli, Cecilia Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales (i); ArgentinaFil: Mas, Miguel. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Mineria; ArgentinaFil: Donati, Edgardo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales (i); ArgentinaTrans Tech Publications2013-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4313Marchevsky, Natalia Judith; Urbieta, María Sofía; Bernardelli, Cecilia Elena; Mas, Miguel; Donati, Edgardo Ruben; Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing Ore; Trans Tech Publications; Advanced Materials Research; 825; 10-2013; 431-4341662-8985enginfo:eu-repo/semantics/altIdentifier/doi/10.4028/www.scientific.net/AMR.825.431info:eu-repo/semantics/altIdentifier/issn/http://www.scientific.net/AMR.825.431info:eu-repo/semantics/altIdentifier/issn/1662-8985info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:59:36Zoai:ri.conicet.gov.ar:11336/4313instacron: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:34982025-10-15 14:59:37.198CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing Ore
title Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing Ore
spellingShingle Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing Ore
Marchevsky, Natalia Judith
Biooxidation
Zinc
Bioleaching
Gold
title_short Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing Ore
title_full Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing Ore
title_fullStr Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing Ore
title_full_unstemmed Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing Ore
title_sort Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing Ore
dc.creator.none.fl_str_mv Marchevsky, Natalia Judith
Urbieta, María Sofía
Bernardelli, Cecilia Elena
Mas, Miguel
Donati, Edgardo Ruben
author Marchevsky, Natalia Judith
author_facet Marchevsky, Natalia Judith
Urbieta, María Sofía
Bernardelli, Cecilia Elena
Mas, Miguel
Donati, Edgardo Ruben
author_role author
author2 Urbieta, María Sofía
Bernardelli, Cecilia Elena
Mas, Miguel
Donati, Edgardo Ruben
author2_role author
author
author
author
dc.subject.none.fl_str_mv Biooxidation
Zinc
Bioleaching
Gold
topic Biooxidation
Zinc
Bioleaching
Gold
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.7
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Mesophilic bacteria were enriched from samples collected from acid mine drainages in La Carolina(San Luis, Argentina). Two enrichments, E1 and E2, showed suitable rates of iron or sulphur oxidation, respectively. Both enrichment cultures were characterized by FISH and they were mainly composed by Leptospirillum ferrooxidans and Acidithiobacillus ferrooxidans. Studies with both,mixed and individual enrichment cultures, showed biooxidation (measured as iron solubilisation) of a refractory gold-bearing pyrite ore from Hualilán (San Juan, Argentina). Pyrite and sphalerite were the main mineral species in the ore with 7 % w/w and 8 % w/w of iron and zinc and approximately 25 ppm of gold. Leaching experiments (2 % w/v ore, 1.8 initial pH, 180 rpm and 30°C) were carried out with the addition of different alternative energy sources (6.67 g/L sulphur powder, 1 g/L iron(II), 0.02% w/v yeast extract). Redox potential, pH, iron(II) concentration and total Fe and Zn were measured regularly. A 100% of iron leaching (after 28 days in the best experimental condition) was observed in some of the cultures. In other systems high zinc release was obtained (100% of dissolution after 28 days in the best experimental condition). Our results strongly suggest that under the correct operating conditions, biooxidation pre-treatment can be used to recover zinc as a subproduct of gold extraction from refractory ore
Fil: Marchevsky, Natalia Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales (i); Argentina. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Mineria; Argentina
Fil: Urbieta, María Sofía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales (i); Argentina
Fil: Bernardelli, Cecilia Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales (i); Argentina
Fil: Mas, Miguel. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Mineria; Argentina
Fil: Donati, Edgardo Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Fermentaciones Industriales (i); Argentina
description Mesophilic bacteria were enriched from samples collected from acid mine drainages in La Carolina(San Luis, Argentina). Two enrichments, E1 and E2, showed suitable rates of iron or sulphur oxidation, respectively. Both enrichment cultures were characterized by FISH and they were mainly composed by Leptospirillum ferrooxidans and Acidithiobacillus ferrooxidans. Studies with both,mixed and individual enrichment cultures, showed biooxidation (measured as iron solubilisation) of a refractory gold-bearing pyrite ore from Hualilán (San Juan, Argentina). Pyrite and sphalerite were the main mineral species in the ore with 7 % w/w and 8 % w/w of iron and zinc and approximately 25 ppm of gold. Leaching experiments (2 % w/v ore, 1.8 initial pH, 180 rpm and 30°C) were carried out with the addition of different alternative energy sources (6.67 g/L sulphur powder, 1 g/L iron(II), 0.02% w/v yeast extract). Redox potential, pH, iron(II) concentration and total Fe and Zn were measured regularly. A 100% of iron leaching (after 28 days in the best experimental condition) was observed in some of the cultures. In other systems high zinc release was obtained (100% of dissolution after 28 days in the best experimental condition). Our results strongly suggest that under the correct operating conditions, biooxidation pre-treatment can be used to recover zinc as a subproduct of gold extraction from refractory ore
publishDate 2013
dc.date.none.fl_str_mv 2013-10
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/11336/4313
Marchevsky, Natalia Judith; Urbieta, María Sofía; Bernardelli, Cecilia Elena; Mas, Miguel; Donati, Edgardo Ruben; Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing Ore; Trans Tech Publications; Advanced Materials Research; 825; 10-2013; 431-434
1662-8985
url http://hdl.handle.net/11336/4313
identifier_str_mv Marchevsky, Natalia Judith; Urbieta, María Sofía; Bernardelli, Cecilia Elena; Mas, Miguel; Donati, Edgardo Ruben; Recovery of Zinc during the Pre-Treatment of a Refractory Gold-Bearing Ore; Trans Tech Publications; Advanced Materials Research; 825; 10-2013; 431-434
1662-8985
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.4028/www.scientific.net/AMR.825.431
info:eu-repo/semantics/altIdentifier/issn/http://www.scientific.net/AMR.825.431
info:eu-repo/semantics/altIdentifier/issn/1662-8985
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/vnd.openxmlformats-officedocument.wordprocessingml.document
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Trans Tech Publications
publisher.none.fl_str_mv Trans Tech Publications
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
_version_ 1846083136247562240
score 13.22299

Publicaciones similares