dor_id: 4149758

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856.4.0.u: https://www.revistascca.unam.mx/rica/index.php/rica/article/view/54597/47275

100.1.#.a: Zazueta Álvarez, David Enrique; Vázquez Ortega, Perla Guadalupe; Rojas Contreras, Juan Antonio; Fierros Romero, Grisel; Medrano Roldán, Hiram; Reyes Jáquez, Damián

524.#.#.a: Zazueta Álvarez, David Enrique, et al. (2023). Evaluation of manganese bioleaching and silver extraction in mining tailings by native bacteria using a flooded system. Revista Internacional de Contaminación Ambiental; Vol. 39, 2023; 501-512. Recuperado de https://repositorio.unam.mx/contenidos/4149758

245.1.0.a: Evaluation of manganese bioleaching and silver extraction in mining tailings by native bacteria using a flooded system

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM

264.#.0.c: 2023

264.#.1.c: 2023-10-06

653.#.#.a: Leptospirillum ferriphilum; pirolusite removal; microaerophilic bioprocess; Leptospirillum ferriphilum; pirolusite removal; microaerophilic bioprocess

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC 4.0 Internacional, https://creativecommons.org/licenses/by-nc/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico claudio.amescua@atmosfera.unam.mx

884.#.#.k: https://www.revistascca.unam.mx/rica/index.php/rica/article/view/54597

001.#.#.#: 105.oai:ojs.pkp.sfu.ca:article/54597

041.#.7.h: spa

520.3.#.a: During the silver extraction process in mining, the generated residues (called tailings) still contain approximately 100-140 g/ton of silver due to the presence of refractory materials that trap this metal and prevent its solubilization by conventional methods. These residues can be treated by biohydrometallurgical processes allowing, together with the cyanidation process, an increase in the efficiency of silver extraction by eliminating refractory materials such as manganese, which is present as pyrolusite (MnO2, 3.78 %). Pyrolusite can change from manganese (IV) to manganese (II) when solubilized by bioleaching. This research analyzed the effects of bioleaching using native bacteria on the concentration of silver extraction from the removal of manganese in mining tailings. The native bacteria ITDBC2, ITDBC5, and ITDBC6 were identified as Leptospirillum ferriphilum by amplification of the 16S gene corroborated by bioinformatic analysis. The experimentation was carried out using a flooded bioleaching system (9.43 L) to resemble the industrial geometry with the following variables concentration of ferrous ions (2, 7, and 14 g/L), pH (2, 4, and 6) and agitation time at 100 rpm (2, 4 and 6 min/day). The experimentation lasted 18 days. The removal of manganese and silver extraction was 71.84 and 55.53 %, respectively. The scaled-up of the evaluated bioprocess could reduce energy consumption and process larger amounts of pulp than the reported at the laboratory scale.

773.1.#.t: Revista Internacional de Contaminación Ambiental; Vol. 39 (2023); 501-512

773.1.#.o: https://www.revistascca.unam.mx/rica/index.php/rica/index

022.#.#.a: ISSN impreso: 0188-4999

310.#.#.a: Trimestral

300.#.#.a: Páginas: 501-512

264.#.1.b: Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM

doi: https://doi.org/10.20937/RICA.54597

harvesting_date: 2023-11-08 13:10:00.0

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245.1.0.b: Evaluation of manganese bioleaching and silver extraction in mining tailings by native bacteria using a flooded system

last_modified: 2024-03-19 14:00:00

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Artículo

Evaluation of manganese bioleaching and silver extraction in mining tailings by native bacteria using a flooded system

Zazueta Álvarez, David Enrique; Vázquez Ortega, Perla Guadalupe; Rojas Contreras, Juan Antonio; Fierros Romero, Grisel; Medrano Roldán, Hiram; Reyes Jáquez, Damián

Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM, publicado en Revista Internacional de Contaminación Ambiental, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Cita

Zazueta Álvarez, David Enrique, et al. (2023). Evaluation of manganese bioleaching and silver extraction in mining tailings by native bacteria using a flooded system. Revista Internacional de Contaminación Ambiental; Vol. 39, 2023; 501-512. Recuperado de https://repositorio.unam.mx/contenidos/4149758

Descripción del recurso

Autor(es)
Zazueta Álvarez, David Enrique; Vázquez Ortega, Perla Guadalupe; Rojas Contreras, Juan Antonio; Fierros Romero, Grisel; Medrano Roldán, Hiram; Reyes Jáquez, Damián
Tipo
Artículo de Investigación
Área del conocimiento
Biología y Química
Título
Evaluation of manganese bioleaching and silver extraction in mining tailings by native bacteria using a flooded system
Fecha
2023-10-06
Resumen
During the silver extraction process in mining, the generated residues (called tailings) still contain approximately 100-140 g/ton of silver due to the presence of refractory materials that trap this metal and prevent its solubilization by conventional methods. These residues can be treated by biohydrometallurgical processes allowing, together with the cyanidation process, an increase in the efficiency of silver extraction by eliminating refractory materials such as manganese, which is present as pyrolusite (MnO2, 3.78 %). Pyrolusite can change from manganese (IV) to manganese (II) when solubilized by bioleaching. This research analyzed the effects of bioleaching using native bacteria on the concentration of silver extraction from the removal of manganese in mining tailings. The native bacteria ITDBC2, ITDBC5, and ITDBC6 were identified as Leptospirillum ferriphilum by amplification of the 16S gene corroborated by bioinformatic analysis. The experimentation was carried out using a flooded bioleaching system (9.43 L) to resemble the industrial geometry with the following variables concentration of ferrous ions (2, 7, and 14 g/L), pH (2, 4, and 6) and agitation time at 100 rpm (2, 4 and 6 min/day). The experimentation lasted 18 days. The removal of manganese and silver extraction was 71.84 and 55.53 %, respectively. The scaled-up of the evaluated bioprocess could reduce energy consumption and process larger amounts of pulp than the reported at the laboratory scale.
Tema
Leptospirillum ferriphilum; pirolusite removal; microaerophilic bioprocess; Leptospirillum ferriphilum; pirolusite removal; microaerophilic bioprocess
Idioma
spa
ISSN
ISSN impreso: 0188-4999

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