Assessment of industrial by-products as amendments to stabilize antimony mine wastes

13 páginas, 9 figuras, 3 tablas

Detalles Bibliográficos
Autores: Álvarez Ayuso, Esther, Murciego, Ascensión
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/311138
Acceso en línea:http://hdl.handle.net/10261/311138
Access Level:acceso abierto
Palabra clave:Aluminum salt slag treatment by-product
Antimony
Deferrisation sludge
Leaching
Mine wastes
Stabilization
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spelling Assessment of industrial by-products as amendments to stabilize antimony mine wastesÁlvarez Ayuso, EstherMurciego, AscensiónAluminum salt slag treatment by-productAntimonyDeferrisation sludgeLeachingMine wastesStabilization13 páginas, 9 figuras, 3 tablasThe spread of antimony from mine wastes to the environment represents a matter of great concern due to its adverse effects on impacted ecosystems. There is an urgent need for developing and adopting sustainable and inexpensive measures to deal with this type of wastes. In this study the Sb leaching behavior of mine waste rocks and mine tailings derived from the exploitation of Sb ore deposits was characterized using standard batch leaching tests (TCLP and EN-12457-4) and column leaching essays. Accordingly, these mine wastes were characterized as toxic (>0.6 mg Sb L-1) and not acceptable at hazardous waste landfills (>5 mg Sb kg-1), showing also an ongoing Sb release under prolonged leaching conditions. Two industrial by-products were evaluated as amendments to stabilize them, namely deferrisation sludge (DFS) and a by-product derived from the treatment of aluminum salt slags (BP-Al). Mine wastes were amended with different doses (0-25%) of DFS or BP-Al and the performance of these treatments was evaluated employing also batch and column leaching procedures. The effectiveness of DFS to immobilize Sb was much higher than that exhibited by BP-Al. Thus, treatments with 25% BP-Al showed Sb immobilization levels of approximately 33-53%, whereas treatments with 5 and 25% DFS already attained Sb immobilization levels up to approximately 80-90 and 90-99%, respectively. Mine tailings amended with 5% DFS and mine waste rocks amended with 25% DFS decreased their leachable Sb contents below the limit for non-hazardous waste landfill acceptance (<0.7 mg Sb kg-1). Likewise, these DFS treatments were able to revert their toxic characterization. Moreover, the 25% DFS treatment showed to be a long-lasting stabilizing system, efficient at least during a leaching period equivalent to 10-year rainfall with a great Sb leaching reduction (close to 98%). After this long-term leaching process, DFS-treated mine wastes kept their non-hazardous and non-toxic characterization. The amorphous Fe (oxyhydr)oxides composing DFS were responsible for the important Sb removal capacity showed by this by-product. Thus, when DFS was applied to mine wastes mobile Sb was importantly fixed as non-desorbable Sb, showing also a considerable Sb removal capacity in presence of strong competing anions such as phosphate. The application of DFS as amendment presents a great potential to be used as a sustainable long-term stabilizing system of Sb mine wastes.The present study was carried out under the project TERMET (Grant number: RTI 2018-095433-B-I00) funded by Ministerio de Ciencia e Innovación (MCIN), Spain/Agencia Estatal de Investigación (AEI), Spain and by Fondo Europeo de Desarrollo Regional (FEDER) "A way of making Europe", European Union, and the project “CLU-2019-05–IRNASA/CSIC Unit of Excellence”, funded by the Junta de Castilla y León (Spain) and cofinanced by the European Union [European Regional Development Fund (ERDF) “Europe drives our growth”].Peer reviewedElsevierMinisterio de Ciencia, Innovación y Universidades (España)Junta de Castilla y LeónÁlvarez Ayuso, Esther [0000-0003-2243-8639]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202320232023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/311138reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-095433-B-I00Journal of environmental managementhttp://dx.doi.org/10.1016/j.jenvman.2023.118218Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3111382026-05-22T06:33:51Z
dc.title.none.fl_str_mv Assessment of industrial by-products as amendments to stabilize antimony mine wastes
title Assessment of industrial by-products as amendments to stabilize antimony mine wastes
spellingShingle Assessment of industrial by-products as amendments to stabilize antimony mine wastes
Álvarez Ayuso, Esther
Aluminum salt slag treatment by-product
Antimony
Deferrisation sludge
Leaching
Mine wastes
Stabilization
title_short Assessment of industrial by-products as amendments to stabilize antimony mine wastes
title_full Assessment of industrial by-products as amendments to stabilize antimony mine wastes
title_fullStr Assessment of industrial by-products as amendments to stabilize antimony mine wastes
title_full_unstemmed Assessment of industrial by-products as amendments to stabilize antimony mine wastes
title_sort Assessment of industrial by-products as amendments to stabilize antimony mine wastes
dc.creator.none.fl_str_mv Álvarez Ayuso, Esther
Murciego, Ascensión
author Álvarez Ayuso, Esther
author_facet Álvarez Ayuso, Esther
Murciego, Ascensión
author_role author
author2 Murciego, Ascensión
author2_role author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Junta de Castilla y León
Álvarez Ayuso, Esther [0000-0003-2243-8639]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Aluminum salt slag treatment by-product
Antimony
Deferrisation sludge
Leaching
Mine wastes
Stabilization
topic Aluminum salt slag treatment by-product
Antimony
Deferrisation sludge
Leaching
Mine wastes
Stabilization
description 13 páginas, 9 figuras, 3 tablas
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/311138
url http://hdl.handle.net/10261/311138
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-095433-B-I00
Journal of environmental management
http://dx.doi.org/10.1016/j.jenvman.2023.118218
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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