Increasing the sustainability of the stabilization-solidification of potentially toxic elements contained in tailings from an active mine using a modified lime mortar
The use of a modified lime mortar as a binder for the stabilization/solidification of mine tailings presents a promising and sustainable solution for immobilizing potentially toxic elements found in these waste materials compared to cement mortars. The effectiveness of this modified lime mortar in a...
| Autores: | , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universidad de Navarra |
| Repositorio: | Dadun. Depósito Académico Digital de la Universidad de Navarra |
| Idioma: | inglés |
| OAI Identifier: | oai:dadun.unav.edu:10171/69240 |
| Acceso en línea: | https://hdl.handle.net/10171/69240 |
| Access Level: | acceso abierto |
| Palabra clave: | Materias Investigacion::Química Solidification/stabilization Mine tailings Lime mortar Encapsulation Arsenic Lead Pozzolanic reaction |
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Increasing the sustainability of the stabilization-solidification of potentially toxic elements contained in tailings from an active mine using a modified lime mortarGonzalez-Sanchez, J.F. (Jesús Fidel)|||/items/bab21af5-7bcf-4861-93a8-e461da9208b3Fernández-Villagómez, G. (Georgina)|||/items/2403baf4-db7a-4532-b109-1516ed2e76a4Loredo-Jasso, A.U. (Alan Ulises)|||/items/860eb8b8-652d-42ce-ad72-08a8d8baead1Fernandez-Alvarez, J.M. (José María)|||/items/1dea5bde-978e-46db-8871-8d426cbb52c8Navarro-Blasco, I. (Iñigo)|||/items/733b109b-1074-49e9-8952-70ec6928cc54Alvarez-Galindo, J.I. (José Ignacio)|||/items/c88ef755-513c-4ff3-bbff-44aadbf32204Materias Investigacion::QuímicaSolidification/stabilizationMine tailingsLime mortarEncapsulationArsenicLeadPozzolanic reactionThe use of a modified lime mortar as a binder for the stabilization/solidification of mine tailings presents a promising and sustainable solution for immobilizing potentially toxic elements found in these waste materials compared to cement mortars. The effectiveness of this modified lime mortar in avoiding the mobility of toxic elements, namely lead (Pb) and arsenic (As), in mine tailings has been thus studied. Encapsulating matrices of 1:1 and 2:1 tailings waste/air lime ratios were prepared. Due to the content of potentially pozzolanic compounds in the mine tailings, mainly some silicate phases, 1:1 matrices showed better mechanical strength than 2:1 samples, ascribed to a more intense pozzolanic reaction. SEM observations identified needle-shaped C-S-H structures. The hardened materials showed good endurance against freeze–thaw cycles. The semi-dynamic tank test demonstrated the effective encapsulation of the toxic components due to the use of lime mortars, yielding values of released Pb and As below the detection limit in all instances. Considering the cost-effectiveness, widespread availability, and ease of use, the use of modified lime mortar for the treatment of mine tailings can be recommended to mitigate the environmental impacts of mining activities.MDPIDadun. Depósito Académico Digital Universidad de Navarra20242024-03-1220242024-01-0120242024-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10171/69240reponame:Dadun. Depósito Académico Digital de la Universidad de Navarrainstname:Universidad de NavarraInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:dadun.unav.edu:10171/692402026-06-21T12:47:57Z |
| dc.title.none.fl_str_mv |
Increasing the sustainability of the stabilization-solidification of potentially toxic elements contained in tailings from an active mine using a modified lime mortar |
| title |
Increasing the sustainability of the stabilization-solidification of potentially toxic elements contained in tailings from an active mine using a modified lime mortar |
| spellingShingle |
Increasing the sustainability of the stabilization-solidification of potentially toxic elements contained in tailings from an active mine using a modified lime mortar Gonzalez-Sanchez, J.F. (Jesús Fidel)|||/items/bab21af5-7bcf-4861-93a8-e461da9208b3 Materias Investigacion::Química Solidification/stabilization Mine tailings Lime mortar Encapsulation Arsenic Lead Pozzolanic reaction |
| title_short |
Increasing the sustainability of the stabilization-solidification of potentially toxic elements contained in tailings from an active mine using a modified lime mortar |
| title_full |
Increasing the sustainability of the stabilization-solidification of potentially toxic elements contained in tailings from an active mine using a modified lime mortar |
| title_fullStr |
Increasing the sustainability of the stabilization-solidification of potentially toxic elements contained in tailings from an active mine using a modified lime mortar |
| title_full_unstemmed |
Increasing the sustainability of the stabilization-solidification of potentially toxic elements contained in tailings from an active mine using a modified lime mortar |
| title_sort |
Increasing the sustainability of the stabilization-solidification of potentially toxic elements contained in tailings from an active mine using a modified lime mortar |
| dc.creator.none.fl_str_mv |
Gonzalez-Sanchez, J.F. (Jesús Fidel)|||/items/bab21af5-7bcf-4861-93a8-e461da9208b3 Fernández-Villagómez, G. (Georgina)|||/items/2403baf4-db7a-4532-b109-1516ed2e76a4 Loredo-Jasso, A.U. (Alan Ulises)|||/items/860eb8b8-652d-42ce-ad72-08a8d8baead1 Fernandez-Alvarez, J.M. (José María)|||/items/1dea5bde-978e-46db-8871-8d426cbb52c8 Navarro-Blasco, I. (Iñigo)|||/items/733b109b-1074-49e9-8952-70ec6928cc54 Alvarez-Galindo, J.I. (José Ignacio)|||/items/c88ef755-513c-4ff3-bbff-44aadbf32204 |
| author |
Gonzalez-Sanchez, J.F. (Jesús Fidel)|||/items/bab21af5-7bcf-4861-93a8-e461da9208b3 |
| author_facet |
Gonzalez-Sanchez, J.F. (Jesús Fidel)|||/items/bab21af5-7bcf-4861-93a8-e461da9208b3 Fernández-Villagómez, G. (Georgina)|||/items/2403baf4-db7a-4532-b109-1516ed2e76a4 Loredo-Jasso, A.U. (Alan Ulises)|||/items/860eb8b8-652d-42ce-ad72-08a8d8baead1 Fernandez-Alvarez, J.M. (José María)|||/items/1dea5bde-978e-46db-8871-8d426cbb52c8 Navarro-Blasco, I. (Iñigo)|||/items/733b109b-1074-49e9-8952-70ec6928cc54 Alvarez-Galindo, J.I. (José Ignacio)|||/items/c88ef755-513c-4ff3-bbff-44aadbf32204 |
| author_role |
author |
| author2 |
Fernández-Villagómez, G. (Georgina)|||/items/2403baf4-db7a-4532-b109-1516ed2e76a4 Loredo-Jasso, A.U. (Alan Ulises)|||/items/860eb8b8-652d-42ce-ad72-08a8d8baead1 Fernandez-Alvarez, J.M. (José María)|||/items/1dea5bde-978e-46db-8871-8d426cbb52c8 Navarro-Blasco, I. (Iñigo)|||/items/733b109b-1074-49e9-8952-70ec6928cc54 Alvarez-Galindo, J.I. (José Ignacio)|||/items/c88ef755-513c-4ff3-bbff-44aadbf32204 |
| author2_role |
author author author author author |
| dc.contributor.none.fl_str_mv |
Dadun. Depósito Académico Digital Universidad de Navarra |
| dc.subject.none.fl_str_mv |
Materias Investigacion::Química Solidification/stabilization Mine tailings Lime mortar Encapsulation Arsenic Lead Pozzolanic reaction |
| topic |
Materias Investigacion::Química Solidification/stabilization Mine tailings Lime mortar Encapsulation Arsenic Lead Pozzolanic reaction |
| description |
The use of a modified lime mortar as a binder for the stabilization/solidification of mine tailings presents a promising and sustainable solution for immobilizing potentially toxic elements found in these waste materials compared to cement mortars. The effectiveness of this modified lime mortar in avoiding the mobility of toxic elements, namely lead (Pb) and arsenic (As), in mine tailings has been thus studied. Encapsulating matrices of 1:1 and 2:1 tailings waste/air lime ratios were prepared. Due to the content of potentially pozzolanic compounds in the mine tailings, mainly some silicate phases, 1:1 matrices showed better mechanical strength than 2:1 samples, ascribed to a more intense pozzolanic reaction. SEM observations identified needle-shaped C-S-H structures. The hardened materials showed good endurance against freeze–thaw cycles. The semi-dynamic tank test demonstrated the effective encapsulation of the toxic components due to the use of lime mortars, yielding values of released Pb and As below the detection limit in all instances. Considering the cost-effectiveness, widespread availability, and ease of use, the use of modified lime mortar for the treatment of mine tailings can be recommended to mitigate the environmental impacts of mining activities. |
| publishDate |
2024 |
| dc.date.none.fl_str_mv |
2024 2024-03-12 2024 2024-01-01 2024 2024-01-01 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
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article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/10171/69240 |
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https://hdl.handle.net/10171/69240 |
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Inglés eng |
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Inglés |
| language |
eng |
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open access http://purl.org/coar/access_right/c_abf2 |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 |
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openAccess |
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application/pdf |
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MDPI |
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MDPI |
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reponame:Dadun. Depósito Académico Digital de la Universidad de Navarra instname:Universidad de Navarra |
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Universidad de Navarra |
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Dadun. Depósito Académico Digital de la Universidad de Navarra |
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