Thermodynamic and Kinetic Study for Silver Recovery by Electrocoagulation Process

Erick Montaño-Silva; Víctor Manuel Vázquez Vázquez; Jesus L Valenzuela; Martín Antonio Encinas Romero; Guillermo del Carmen Tiburcio Munive; Alejandro Valenzuela Soto; Jose R Parga-Torres

doi:https://doi.org/10.1007/s42461-021-00509-5

Thermodynamic and Kinetic Study for Silver Recovery by Electrocoagulation Process

Erick Montaño-Silva^*, Víctor Manuel Vázquez Vázquez, Jesus L Valenzuela, Martín Antonio Encinas Romero, Guillermo del Carmen Tiburcio Munive, Alejandro Valenzuela Soto, Jose R Parga-Torres

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Merrill-Crowe is the primary process used for the concentration and purifcation of silver in a cyanide solution. The Langmuir Adsorption model for silver recovery in a cyanide solution was used for the study. The maximum adsorption capacity
was 6.19 mmol/g for silver. This model properly adjusts the experimental results of the adsorption equilibrium with high
correlation coefcients, which also favors the formation of a single layer of molecules adsorbed for the silver in the electrocoagulation-generated species. The thermodynamic parameters ΔG, ΔH, and ΔS were estimated, and it was found that the
adsorption process is exothermic and spontaneous. For the kinetic study, the Lagergren second-order equation was used to
study the adsorption speed. To characterize the solids coming from the electrocoagulation, X-ray difraction (XRD), and
scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX) were used; the results of this study
suggest that silver is present in aluminite, hydroniumjarosite, and alunogen

Translated title of the contribution	Estudio Cinético y Termodinámico para Recuperación de Plata por el Proceso de Electrocoagulación
Original language	English
Pages (from-to)	01
Number of pages	7
Journal	MINING, METALLURGY AND EXPLORATION
Early online date	1 Nov 2021
DOIs	https://doi.org/10.1007/s42461-021-00509-5
State	Published - 1 Nov 2021

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Cite this

@article{4354b1a67e8d429eb9aad7edde3fb047,

title = "Thermodynamic and Kinetic Study for Silver Recovery by Electrocoagulation Process",

abstract = "Merrill-Crowe is the primary process used for the concentration and purifcation of silver in a cyanide solution. The Langmuir Adsorption model for silver recovery in a cyanide solution was used for the study. The maximum adsorption capacity was 6.19 mmol/g for silver. This model properly adjusts the experimental results of the adsorption equilibrium with high correlation coefcients, which also favors the formation of a single layer of molecules adsorbed for the silver in the electrocoagulation-generated species. The thermodynamic parameters ΔG, ΔH, and ΔS were estimated, and it was found that the adsorption process is exothermic and spontaneous. For the kinetic study, the Lagergren second-order equation was used to study the adsorption speed. To characterize the solids coming from the electrocoagulation, X-ray difraction (XRD), and scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX) were used; the results of this study suggest that silver is present in aluminite, hydroniumjarosite, and alunogen",

author = "Erick Monta{\~n}o-Silva and {V{\'a}zquez V{\'a}zquez}, {V{\'i}ctor Manuel} and Valenzuela, {Jesus L} and {Encinas Romero}, {Mart{\'i}n Antonio} and {Tiburcio Munive}, {Guillermo del Carmen} and {Valenzuela Soto}, Alejandro and Parga-Torres, {Jose R}",

year = "2021",

month = nov,

day = "1",

doi = "https://doi.org/10.1007/s42461-021-00509-5",

language = "Ingl{\'e}s",

pages = "01",

journal = "MINING, METALLURGY AND EXPLORATION",

issn = "2524-3470",

publisher = "Springer",

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TY - JOUR

T1 - Thermodynamic and Kinetic Study for Silver Recovery by Electrocoagulation Process

AU - Montaño-Silva, Erick

AU - Vázquez Vázquez, Víctor Manuel

AU - Valenzuela, Jesus L

AU - Encinas Romero, Martín Antonio

AU - Tiburcio Munive, Guillermo del Carmen

AU - Valenzuela Soto, Alejandro

AU - Parga-Torres, Jose R

PY - 2021/11/1

Y1 - 2021/11/1

N2 - Merrill-Crowe is the primary process used for the concentration and purifcation of silver in a cyanide solution. The Langmuir Adsorption model for silver recovery in a cyanide solution was used for the study. The maximum adsorption capacity was 6.19 mmol/g for silver. This model properly adjusts the experimental results of the adsorption equilibrium with high correlation coefcients, which also favors the formation of a single layer of molecules adsorbed for the silver in the electrocoagulation-generated species. The thermodynamic parameters ΔG, ΔH, and ΔS were estimated, and it was found that the adsorption process is exothermic and spontaneous. For the kinetic study, the Lagergren second-order equation was used to study the adsorption speed. To characterize the solids coming from the electrocoagulation, X-ray difraction (XRD), and scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX) were used; the results of this study suggest that silver is present in aluminite, hydroniumjarosite, and alunogen

AB - Merrill-Crowe is the primary process used for the concentration and purifcation of silver in a cyanide solution. The Langmuir Adsorption model for silver recovery in a cyanide solution was used for the study. The maximum adsorption capacity was 6.19 mmol/g for silver. This model properly adjusts the experimental results of the adsorption equilibrium with high correlation coefcients, which also favors the formation of a single layer of molecules adsorbed for the silver in the electrocoagulation-generated species. The thermodynamic parameters ΔG, ΔH, and ΔS were estimated, and it was found that the adsorption process is exothermic and spontaneous. For the kinetic study, the Lagergren second-order equation was used to study the adsorption speed. To characterize the solids coming from the electrocoagulation, X-ray difraction (XRD), and scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX) were used; the results of this study suggest that silver is present in aluminite, hydroniumjarosite, and alunogen

U2 - https://doi.org/10.1007/s42461-021-00509-5

DO - https://doi.org/10.1007/s42461-021-00509-5

M3 - Artículo

SN - 2524-3470

SP - 01

JO - MINING, METALLURGY AND EXPLORATION

JF - MINING, METALLURGY AND EXPLORATION

ER -