Passive remediation of mine waters from Parys Mountain (Wales): Laboratory column experiments

This study evaluates the effectiveness of dispersed alkaline substrate (DAS) technology to treat highly acidic and contaminated leachates from the oxidation of sulfide-rich mining wastes under wet temperate oceanic climate conditions. To address this issue, leachates from the abandoned mine at Parys...

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Detalhes bibliográficos
Autores: Millán Becerro, Ricardo, Ruiz Cánovas, Carlos, Macías Suárez, Francisco, Röetting, Tobias S, Siddorn, Louise, Stanley, Peter, Nieto Liñán, José Miguel
Formato: artículo
Fecha de publicación:2023
País:España
Recursos:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:inglés
OAI Identifier:oai:ariasmontano.uhu.es:10272/22542
Acesso em linha:https://hdl.handle.net/10272/22542
Access Level:acceso abierto
Palavra-chave:Acid mine drainage
Dispersed alkaline substrate
Column experiments
Pollutant removal
2503 Geoquímica
2391 Química Ambiental
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spelling Passive remediation of mine waters from Parys Mountain (Wales): Laboratory column experimentsMillán Becerro, RicardoRuiz Cánovas, CarlosMacías Suárez, FranciscoRöetting, Tobias SSiddorn, LouiseStanley, PeterNieto Liñán, José MiguelAcid mine drainageDispersed alkaline substrateColumn experimentsPollutant removal2503 Geoquímica2391 Química AmbientalThis study evaluates the effectiveness of dispersed alkaline substrate (DAS) technology to treat highly acidic and contaminated leachates from the oxidation of sulfide-rich mining wastes under wet temperate oceanic climate conditions. To address this issue, leachates from the abandoned mine at Parys Mountain (NW Wales) were passed through two sets of multistep columns filled with a mixture of a fine-grained alkaline reagent (i.e., limestone, MgO, or BaCO3) scattered in an inert matrix. The set of columns with the limestone-DAS plus MgO-DAS combination achieved a near total removal of Fe, Al, Zn, Cu, Mn, As, Co, Cd, and Ni. However, the elimination of SO4 was not significant (around 7%). The limestone-DAS plus BaCO3-DAS combination also achieved a high effectiveness for base metal/loids, allowing the removal of Fe, Al, Zn, Cu, As, and Cd with rates of nearly 100%. In addition, the system with the BaCO3-step had a higher effectiveness in eliminating SO4 (around 53%) than the combined treatment with the MgO-step. According to PHREEQC code calculations, the precipitation of oxyhydroxy-sulfates (i.e., schwertmannite and basaluminite) and carbonate (i.e., malachite, hydrozincite and calcite) phases may have controlled the solubility of pollutants during the passive treatment. The chemical compositions of the treated waters complied with the threshold values defined by irrigation standards, except for Mn in the BaCO3-DAS output.Elsevier20232023-01-0120232023-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10272/22542reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/225422026-06-02T14:58:11Z
dc.title.none.fl_str_mv Passive remediation of mine waters from Parys Mountain (Wales): Laboratory column experiments
title Passive remediation of mine waters from Parys Mountain (Wales): Laboratory column experiments
spellingShingle Passive remediation of mine waters from Parys Mountain (Wales): Laboratory column experiments
Millán Becerro, Ricardo
Acid mine drainage
Dispersed alkaline substrate
Column experiments
Pollutant removal
2503 Geoquímica
2391 Química Ambiental
title_short Passive remediation of mine waters from Parys Mountain (Wales): Laboratory column experiments
title_full Passive remediation of mine waters from Parys Mountain (Wales): Laboratory column experiments
title_fullStr Passive remediation of mine waters from Parys Mountain (Wales): Laboratory column experiments
title_full_unstemmed Passive remediation of mine waters from Parys Mountain (Wales): Laboratory column experiments
title_sort Passive remediation of mine waters from Parys Mountain (Wales): Laboratory column experiments
dc.creator.none.fl_str_mv Millán Becerro, Ricardo
Ruiz Cánovas, Carlos
Macías Suárez, Francisco
Röetting, Tobias S
Siddorn, Louise
Stanley, Peter
Nieto Liñán, José Miguel
author Millán Becerro, Ricardo
author_facet Millán Becerro, Ricardo
Ruiz Cánovas, Carlos
Macías Suárez, Francisco
Röetting, Tobias S
Siddorn, Louise
Stanley, Peter
Nieto Liñán, José Miguel
author_role author
author2 Ruiz Cánovas, Carlos
Macías Suárez, Francisco
Röetting, Tobias S
Siddorn, Louise
Stanley, Peter
Nieto Liñán, José Miguel
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Acid mine drainage
Dispersed alkaline substrate
Column experiments
Pollutant removal
2503 Geoquímica
2391 Química Ambiental
topic Acid mine drainage
Dispersed alkaline substrate
Column experiments
Pollutant removal
2503 Geoquímica
2391 Química Ambiental
description This study evaluates the effectiveness of dispersed alkaline substrate (DAS) technology to treat highly acidic and contaminated leachates from the oxidation of sulfide-rich mining wastes under wet temperate oceanic climate conditions. To address this issue, leachates from the abandoned mine at Parys Mountain (NW Wales) were passed through two sets of multistep columns filled with a mixture of a fine-grained alkaline reagent (i.e., limestone, MgO, or BaCO3) scattered in an inert matrix. The set of columns with the limestone-DAS plus MgO-DAS combination achieved a near total removal of Fe, Al, Zn, Cu, Mn, As, Co, Cd, and Ni. However, the elimination of SO4 was not significant (around 7%). The limestone-DAS plus BaCO3-DAS combination also achieved a high effectiveness for base metal/loids, allowing the removal of Fe, Al, Zn, Cu, As, and Cd with rates of nearly 100%. In addition, the system with the BaCO3-step had a higher effectiveness in eliminating SO4 (around 53%) than the combined treatment with the MgO-step. According to PHREEQC code calculations, the precipitation of oxyhydroxy-sulfates (i.e., schwertmannite and basaluminite) and carbonate (i.e., malachite, hydrozincite and calcite) phases may have controlled the solubility of pollutants during the passive treatment. The chemical compositions of the treated waters complied with the threshold values defined by irrigation standards, except for Mn in the BaCO3-DAS output.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-01-01
2023
2023-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10272/22542
url https://hdl.handle.net/10272/22542
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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