Comprehensive Analysis of the Dissolution of Precious Metals with Innovative Amine-Based Leaching Systems

In this research work, novel amine-based leaching systems monoethanolamine (MEA) and ethylamine (EA) were studied from an electrochemical approach to improve the understanding of the dissolution reaction mechanism of precious metals, i.e., gold and silver. The effect of MEA and EA concentration on t...

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Autores principales:	Cos Castillo, C. Emilia, Fuentes Aceituno, Juan Carlos
Formato:	Online
Lenguaje:	spa
Publicado:	Universida de Sonora 2023
Acceso en línea:	https://epistemus.unison.mx/index.php/epistemus/article/view/267
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spelling	oai:http:--epistemus.unison.mx:article-2672023-08-22T17:57:53Z Comprehensive Analysis of the Dissolution of Precious Metals with Innovative Amine-Based Leaching Systems Análisis integral de la disolución de los metales preciosos con sistemas de lixiviación novedosos a base de aminas Cos Castillo, C. Emilia Fuentes Aceituno, Juan Carlos Monoethanolamine ethylamine oxidation leaching precious metals Monoetanolamina etilamina oxidación lixiviación metales preciosos In this research work, novel amine-based leaching systems monoethanolamine (MEA) and ethylamine (EA) were studied from an electrochemical approach to improve the understanding of the dissolution reaction mechanism of precious metals, i.e., gold and silver. The effect of MEA and EA concentration on the oxidation rate of precious metals is presented. The study is complemented with electrochemical techniques such as: open circuit potential technique (OCP), linear voltammetry (VL) and chronoamperometry. The results show that these amines have a great potential in dissolving Au and Ag since average current densities of 0.008 and 0.013 A/cm2 are reached using the MEA, and 0.023 and 0.029 A/cm2 using the EA, respectively. Furthermore, the results indicate that both MEA and EA could decrease the environmental impact involved in hydrometallurgical processes. En este trabajo de investigación se estudiaron, desde un enfoque electroquímico, los sistemas de lixiviación novedosos a base de aminas; la monoetanolamina (MEA) y la etilamina (EA), para mejorar el entendimiento del mecanismo de reacción de la disolución de los metales preciosos, i.e., el oro y la plata. Se presenta el efecto de la concentración de la MEA y la EA, en la velocidad de oxidación de los metales preciosos. El estudio es complementado por medio de técnicas electroquímicas tales como: Técnica del potencial de circuito abierto (OCP), voltametría lineal (VL) y cronoamperometrías. Los resultados demuestran que estas aminas tienen un gran potencial al disolver el Au y la Ag, debido a que se alcanzan densidades de corriente promedio de 0.008 y 0.013 A/cm2 empleando la MEA y 0.023 y 0.029 A/cm2 utilizando la EA, respectivamente. Además, los resultados dictaminan que tanto la MEA como la EA podrían disminuir el... Universida de Sonora 2023-04-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Research Investigación application/pdf https://epistemus.unison.mx/index.php/epistemus/article/view/267 10.36790/epistemus.v17i34.267 EPISTEMUS; Vol. 17 No. 34 (2023): Issue No. 34 EPISTEMUS; Vol. 17 Núm. 34 (2023): Revista No. 34 2007-8196 2007-4530 spa https://epistemus.unison.mx/index.php/epistemus/article/view/267/340 Derechos de autor 2023 EPISTEMUS https://creativecommons.org/licenses/by-nc-sa/4.0
institution	Epistemus
collection	OJS
language	spa
format	Online
author	Cos Castillo, C. Emilia Fuentes Aceituno, Juan Carlos
spellingShingle	Cos Castillo, C. Emilia Fuentes Aceituno, Juan Carlos Comprehensive Analysis of the Dissolution of Precious Metals with Innovative Amine-Based Leaching Systems
author_facet	Cos Castillo, C. Emilia Fuentes Aceituno, Juan Carlos
author_sort	Cos Castillo, C. Emilia
title	Comprehensive Analysis of the Dissolution of Precious Metals with Innovative Amine-Based Leaching Systems
title_short	Comprehensive Analysis of the Dissolution of Precious Metals with Innovative Amine-Based Leaching Systems
title_full	Comprehensive Analysis of the Dissolution of Precious Metals with Innovative Amine-Based Leaching Systems
title_fullStr	Comprehensive Analysis of the Dissolution of Precious Metals with Innovative Amine-Based Leaching Systems
title_full_unstemmed	Comprehensive Analysis of the Dissolution of Precious Metals with Innovative Amine-Based Leaching Systems
title_sort	comprehensive analysis of the dissolution of precious metals with innovative amine-based leaching systems
description	In this research work, novel amine-based leaching systems monoethanolamine (MEA) and ethylamine (EA) were studied from an electrochemical approach to improve the understanding of the dissolution reaction mechanism of precious metals, i.e., gold and silver. The effect of MEA and EA concentration on the oxidation rate of precious metals is presented. The study is complemented with electrochemical techniques such as: open circuit potential technique (OCP), linear voltammetry (VL) and chronoamperometry. The results show that these amines have a great potential in dissolving Au and Ag since average current densities of 0.008 and 0.013 A/cm2 are reached using the MEA, and 0.023 and 0.029 A/cm2 using the EA, respectively. Furthermore, the results indicate that both MEA and EA could decrease the environmental impact involved in hydrometallurgical processes.
publisher	Universida de Sonora
publishDate	2023
url	https://epistemus.unison.mx/index.php/epistemus/article/view/267
work_keys_str_mv	AT coscastillocemilia comprehensiveanalysisofthedissolutionofpreciousmetalswithinnovativeaminebasedleachingsystems AT fuentesaceitunojuancarlos comprehensiveanalysisofthedissolutionofpreciousmetalswithinnovativeaminebasedleachingsystems AT coscastillocemilia analisisintegraldeladisoluciondelosmetalespreciososconsistemasdelixiviacionnovedososabasedeaminas AT fuentesaceitunojuancarlos analisisintegraldeladisoluciondelosmetalespreciososconsistemasdelixiviacionnovedososabasedeaminas
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Comprehensive Analysis of the Dissolution of Precious Metals with Innovative Amine-Based Leaching Systems

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