Application of different alkaline materials as polluted soil amendments: A comparative assessment of their impact on trace element mobility and microbial functions

9 páginas, 4 figuras, 3 tablas

Detalles Bibliográficos
Autores: Álvarez Ayuso, Esther, Abad Valle, Patricia
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/253809
Acceso en línea:http://hdl.handle.net/10261/253809
Access Level:acceso abierto
Palabra clave:Coal combustion fly ashes
Zeolite NaP1
Aluminum salt slags
Calcite
Polluted soil stabilization
Soil enzymatic activities
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spelling Application of different alkaline materials as polluted soil amendments: A comparative assessment of their impact on trace element mobility and microbial functionsEcotoxicology and Environmental SafetyÁlvarez Ayuso, EstherAbad Valle, PatriciaCoal combustion fly ashesZeolite NaP1Aluminum salt slagsCalcitePolluted soil stabilizationSoil enzymatic activities9 páginas, 4 figuras, 3 tablasTreatment with chemical amendments is among the best techniques to remediate soils highly polluted with trace elements. The use of waste-derived products has several advantages in this regard, mainly in terms of reducing process costs and conserving natural resources. In this study, the performance of the synthetic zeolite NaP1 derived from coal combustion fly ash (SZ) and the by-product generated from the processing of aluminum salt slags (BP) was evaluated with this aim in comparison to calcite (CC). For this purpose, mine soils polluted with Zn, Cd, and Pb were amended under controlled laboratory conditions with different doses (0%, 1%, 2%, 5%, and 10%) of SZ, BP, or CC, and their impact on trace element mobility and microbial functions was evaluated. Specifically, the mobile and mobilizable trace element pools, basal soil respiration, and different enzyme activities were analyzed. Both SZ and BP performed better than CC in the immobilization of trace elements, reaching, respectively, mobility decreases up to 89–94% and 66–87% when applied at a dose of 10%. These amendments reduced the mobile trace element pool by precipitating them as acid-soluble precipitates and/or retaining them in the reducible fraction of soils. The alkaline nature of these materials and the concomitant increase in soil pH caused by their application mainly accounted for this behavior. Additionally, soil microbial functionality improved after amendment, especially in the case of SZ, as shown by dehydrogenase and alkaline phosphatase activities, which significantly increased (p < 0.05) up to 536% and 48%, respectively. Therefore, applying SZ or BP as soil amendments can significantly decrease the mobile trace element contents of heavily polluted soils without negatively affecting soil quality, thus facilitating plant growth to revegetate and reclaim degraded spaces.The present work was carried out under the framework of the project “CLU-2019–05 – IRNASA/CSIC Unit of Excellence”, funded by the Junta de Castilla y León (Spain) and co-financed by the European Union (European Regional Development Fund (ERDF) “Europe drives our growth”). Abad-Valle P. acknowledges the Spanish Scientific Research Council (CSIC) for her contract funded by the JAE-Doc Program (CSICFSE) (Contract reference: JAEDOC057).Peer reviewedElsevierJunta de Castilla y LeónEuropean CommissionÁlvarez Ayuso, Esther [0000-0003-2243-8639]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202120212021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/253809reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.ecoenv.2021.112927Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2538092026-05-22T06:33:51Z
dc.title.none.fl_str_mv Application of different alkaline materials as polluted soil amendments: A comparative assessment of their impact on trace element mobility and microbial functions
Ecotoxicology and Environmental Safety
title Application of different alkaline materials as polluted soil amendments: A comparative assessment of their impact on trace element mobility and microbial functions
spellingShingle Application of different alkaline materials as polluted soil amendments: A comparative assessment of their impact on trace element mobility and microbial functions
Álvarez Ayuso, Esther
Coal combustion fly ashes
Zeolite NaP1
Aluminum salt slags
Calcite
Polluted soil stabilization
Soil enzymatic activities
title_short Application of different alkaline materials as polluted soil amendments: A comparative assessment of their impact on trace element mobility and microbial functions
title_full Application of different alkaline materials as polluted soil amendments: A comparative assessment of their impact on trace element mobility and microbial functions
title_fullStr Application of different alkaline materials as polluted soil amendments: A comparative assessment of their impact on trace element mobility and microbial functions
title_full_unstemmed Application of different alkaline materials as polluted soil amendments: A comparative assessment of their impact on trace element mobility and microbial functions
title_sort Application of different alkaline materials as polluted soil amendments: A comparative assessment of their impact on trace element mobility and microbial functions
dc.creator.none.fl_str_mv Álvarez Ayuso, Esther
Abad Valle, Patricia
author Álvarez Ayuso, Esther
author_facet Álvarez Ayuso, Esther
Abad Valle, Patricia
author_role author
author2 Abad Valle, Patricia
author2_role author
dc.contributor.none.fl_str_mv Junta de Castilla y León
European Commission
Álvarez Ayuso, Esther [0000-0003-2243-8639]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Coal combustion fly ashes
Zeolite NaP1
Aluminum salt slags
Calcite
Polluted soil stabilization
Soil enzymatic activities
topic Coal combustion fly ashes
Zeolite NaP1
Aluminum salt slags
Calcite
Polluted soil stabilization
Soil enzymatic activities
description 9 páginas, 4 figuras, 3 tablas
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
2021
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/10261/253809
url http://hdl.handle.net/10261/253809
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.ecoenv.2021.112927
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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