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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Universida de Sonora
2023
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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 |
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1781317657325207552 |