Bioleaching of a Chalcocite-Dominant Copper Ore from Salta, Argentina, by Mesophilic and Thermophilic Microorganisms

The study and development of new sustainable mining methods to exploit low-grade ores and secondary metallic resources are essential to meet global demand and contribute to caring for the environment. Copper is one of the most widely used metals and chalcocite is the main secondary sulfide of this m...

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Autores principales:	Amar, Agustina, Massello, Francisco Luis, Costa, Cristina, Castro, Camila, Donati, Edgardo Rubén
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2023
Materias:	Ciencias Exactas chalcocite bioleaching copper sulfides hydrometallurgy Taca Taca project mesophiles thermophiles
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/155683
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-155683
record_format	dspace
spelling	I19-R120-10915-1556832023-08-01T20:07:50Z http://sedici.unlp.edu.ar/handle/10915/155683 Bioleaching of a Chalcocite-Dominant Copper Ore from Salta, Argentina, by Mesophilic and Thermophilic Microorganisms Amar, Agustina Massello, Francisco Luis Costa, Cristina Castro, Camila Donati, Edgardo Rubén 2023-01 2023-08-01T13:26:22Z en Ciencias Exactas chalcocite bioleaching copper sulfides hydrometallurgy Taca Taca project mesophiles thermophiles The study and development of new sustainable mining methods to exploit low-grade ores and secondary metallic resources are essential to meet global demand and contribute to caring for the environment. Copper is one of the most widely used metals and chalcocite is the main secondary sulfide of this metal. Therefore, the study of copper recovery from chalcocite-dominant minerals could have a great impact on the industry. In this study, we assess at bench scale the feasibility of applying biohydrometallurgical processes to extract copper from chalcocite-rich minerals from Taca Taca, Argentina, using native mesophilic microorganisms (30 °C) and thermophiles (45, 65 °C). The indigenous mesophilic consortium was dominated by Acidithiobacillus ferrooxidans and could solubilize all the copper present in the systems (113 mg/L) within three weeks without any change in the pH of the solution. Notably, by increasing the temperature up to 45 and 65 °C, copper leaching was enhanced, completing the recovery in 7–14 days. The oxidizing microorganisms active in these conditions were Ferroplasma sp. and Acidianus copahuensis, respectively. An increase in the abiotic copper recovery was also observed as temperature rose; as well as a slight acidification of the solution. This study constitutes the first assessment for the bioleaching of Taca Taca ores. Centro de Investigación y Desarrollo en Fermentaciones Industriales Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Exactas chalcocite bioleaching copper sulfides hydrometallurgy Taca Taca project mesophiles thermophiles
spellingShingle	Ciencias Exactas chalcocite bioleaching copper sulfides hydrometallurgy Taca Taca project mesophiles thermophiles Amar, Agustina Massello, Francisco Luis Costa, Cristina Castro, Camila Donati, Edgardo Rubén Bioleaching of a Chalcocite-Dominant Copper Ore from Salta, Argentina, by Mesophilic and Thermophilic Microorganisms
topic_facet	Ciencias Exactas chalcocite bioleaching copper sulfides hydrometallurgy Taca Taca project mesophiles thermophiles
description	The study and development of new sustainable mining methods to exploit low-grade ores and secondary metallic resources are essential to meet global demand and contribute to caring for the environment. Copper is one of the most widely used metals and chalcocite is the main secondary sulfide of this metal. Therefore, the study of copper recovery from chalcocite-dominant minerals could have a great impact on the industry. In this study, we assess at bench scale the feasibility of applying biohydrometallurgical processes to extract copper from chalcocite-rich minerals from Taca Taca, Argentina, using native mesophilic microorganisms (30 °C) and thermophiles (45, 65 °C). The indigenous mesophilic consortium was dominated by Acidithiobacillus ferrooxidans and could solubilize all the copper present in the systems (113 mg/L) within three weeks without any change in the pH of the solution. Notably, by increasing the temperature up to 45 and 65 °C, copper leaching was enhanced, completing the recovery in 7–14 days. The oxidizing microorganisms active in these conditions were Ferroplasma sp. and Acidianus copahuensis, respectively. An increase in the abiotic copper recovery was also observed as temperature rose; as well as a slight acidification of the solution. This study constitutes the first assessment for the bioleaching of Taca Taca ores.
format	Articulo Articulo
author	Amar, Agustina Massello, Francisco Luis Costa, Cristina Castro, Camila Donati, Edgardo Rubén
author_facet	Amar, Agustina Massello, Francisco Luis Costa, Cristina Castro, Camila Donati, Edgardo Rubén
author_sort	Amar, Agustina
title	Bioleaching of a Chalcocite-Dominant Copper Ore from Salta, Argentina, by Mesophilic and Thermophilic Microorganisms
title_short	Bioleaching of a Chalcocite-Dominant Copper Ore from Salta, Argentina, by Mesophilic and Thermophilic Microorganisms
title_full	Bioleaching of a Chalcocite-Dominant Copper Ore from Salta, Argentina, by Mesophilic and Thermophilic Microorganisms
title_fullStr	Bioleaching of a Chalcocite-Dominant Copper Ore from Salta, Argentina, by Mesophilic and Thermophilic Microorganisms
title_full_unstemmed	Bioleaching of a Chalcocite-Dominant Copper Ore from Salta, Argentina, by Mesophilic and Thermophilic Microorganisms
title_sort	bioleaching of a chalcocite-dominant copper ore from salta, argentina, by mesophilic and thermophilic microorganisms
publishDate	2023
url	http://sedici.unlp.edu.ar/handle/10915/155683
work_keys_str_mv	AT amaragustina bioleachingofachalcocitedominantcopperorefromsaltaargentinabymesophilicandthermophilicmicroorganisms AT massellofranciscoluis bioleachingofachalcocitedominantcopperorefromsaltaargentinabymesophilicandthermophilicmicroorganisms AT costacristina bioleachingofachalcocitedominantcopperorefromsaltaargentinabymesophilicandthermophilicmicroorganisms AT castrocamila bioleachingofachalcocitedominantcopperorefromsaltaargentinabymesophilicandthermophilicmicroorganisms AT donatiedgardoruben bioleachingofachalcocitedominantcopperorefromsaltaargentinabymesophilicandthermophilicmicroorganisms
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Bioleaching of a Chalcocite-Dominant Copper Ore from Salta, Argentina, by Mesophilic and Thermophilic Microorganisms

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