Radioactive characterization of leachates and efflorescences in the neighbouring areas of a phosphogypsum disposal site as a preliminary step before its restoration

After the recent closure of certain phosphoric acid plants located in the South-West of Spain, it has been decided to restore a big extension (more than six hundred hectares) of salt-marshes, where some million tonnes of phosphogypsum (PG), the main by-product generated by these plants, had been dis...

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Autor: Gazquez Gonzalez, M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:Ecuador
Institución:Universidad Técnica Particular de Loja
Repositorio:Repositorio Universidad Técnica Particular de Loja
OAI Identifier:oai:dspace.utpl.edu.ec:123456789/19086
Acceso en línea:http://dx.doi.org/10.1016/j.jenvrad.2014.06.025
http://dspace.utpl.edu.ec/handle/123456789/19086
Access Level:acceso abierto
Palabra clave:efflorescences
environmental pollution
leaching waters
phosphogypsum piles
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spelling Radioactive characterization of leachates and efflorescences in the neighbouring areas of a phosphogypsum disposal site as a preliminary step before its restorationGazquez Gonzalez, M.efflorescencesenvironmental pollutionleaching watersphosphogypsum pilesAfter the recent closure of certain phosphoric acid plants located in the South-West of Spain, it has been decided to restore a big extension (more than six hundred hectares) of salt-marshes, where some million tonnes of phosphogypsum (PG), the main by-product generated by these plants, had been disposed of. This PG is characterized by its content of high activity concentrations of several radionuclides from the uranium series, mainly 226Ra, 210Pb, and 210Po and, to a lesser extent, U-isotopes.The PG disposal area can be considered as a potential source of radionuclides into their nearby environment, through the waters which percolate from them and through the efflorescences formed in their surroundings. For this reason, a detailed radioactive characterization of the mentioned waters and efflorescences has been considered essential for a proper planning of the restoration tasks to be applied in the near future in the zone. To this end, U-isotopes, 234Th, 230Th, 226Ra, 210Pb and 210Po activity concentrations have been determined by applying both alpha-particle and gamma-ray spectrometric techniques to selected water and efflorescence aliquots collected in the area.The analysis of the obtained results has enabled to obtain information about the geochemical behaviour in the area of the different radionuclides analyzed; and the conclusion to be drawn that, in the restoration plan under preparation, both the prohibition of outflowing waters from the disposal area to the neighbouring salt-marshes, and the removal of all the efflorescences now disseminated in their surroundings are essential. © 2014 Elsevier Ltd.Journal of Environmental Radioactivity2017-06-16T22:02:55Z2017-06-16T22:02:55Z01/11/2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.jenvrad.2014.06.0250265931Xhttp://dx.doi.org/10.1016/j.jenvrad.2014.06.025http://dspace.utpl.edu.ec/handle/123456789/19086Inglésinfo:eu-repo/semantics/openAccessreponame:Repositorio Universidad Técnica Particular de Lojainstname:Universidad Técnica Particular de Lojainstacron:UTPL2017-06-16T22:02:55Zoai:dspace.utpl.edu.ec:123456789/19086Institucionalhttps://dspace.utpl.edu.ec/Institución privadahttps://www.utpl.edu.ec/https://dspace.utpl.edu.ec/oai.Ecuador...opendoar:12272026-08-08T09:10:33.042195Repositorio Universidad Técnica Particular de Loja - Universidad Técnica Particular de Lojatrue
dc.title.none.fl_str_mv Radioactive characterization of leachates and efflorescences in the neighbouring areas of a phosphogypsum disposal site as a preliminary step before its restoration
title Radioactive characterization of leachates and efflorescences in the neighbouring areas of a phosphogypsum disposal site as a preliminary step before its restoration
spellingShingle Radioactive characterization of leachates and efflorescences in the neighbouring areas of a phosphogypsum disposal site as a preliminary step before its restoration
Gazquez Gonzalez, M.
efflorescences
environmental pollution
leaching waters
phosphogypsum piles
title_short Radioactive characterization of leachates and efflorescences in the neighbouring areas of a phosphogypsum disposal site as a preliminary step before its restoration
title_full Radioactive characterization of leachates and efflorescences in the neighbouring areas of a phosphogypsum disposal site as a preliminary step before its restoration
title_fullStr Radioactive characterization of leachates and efflorescences in the neighbouring areas of a phosphogypsum disposal site as a preliminary step before its restoration
title_full_unstemmed Radioactive characterization of leachates and efflorescences in the neighbouring areas of a phosphogypsum disposal site as a preliminary step before its restoration
title_sort Radioactive characterization of leachates and efflorescences in the neighbouring areas of a phosphogypsum disposal site as a preliminary step before its restoration
dc.creator.none.fl_str_mv Gazquez Gonzalez, M.
author Gazquez Gonzalez, M.
author_facet Gazquez Gonzalez, M.
author_role author
dc.subject.none.fl_str_mv efflorescences
environmental pollution
leaching waters
phosphogypsum piles
topic efflorescences
environmental pollution
leaching waters
phosphogypsum piles
description After the recent closure of certain phosphoric acid plants located in the South-West of Spain, it has been decided to restore a big extension (more than six hundred hectares) of salt-marshes, where some million tonnes of phosphogypsum (PG), the main by-product generated by these plants, had been disposed of. This PG is characterized by its content of high activity concentrations of several radionuclides from the uranium series, mainly 226Ra, 210Pb, and 210Po and, to a lesser extent, U-isotopes.The PG disposal area can be considered as a potential source of radionuclides into their nearby environment, through the waters which percolate from them and through the efflorescences formed in their surroundings. For this reason, a detailed radioactive characterization of the mentioned waters and efflorescences has been considered essential for a proper planning of the restoration tasks to be applied in the near future in the zone. To this end, U-isotopes, 234Th, 230Th, 226Ra, 210Pb and 210Po activity concentrations have been determined by applying both alpha-particle and gamma-ray spectrometric techniques to selected water and efflorescence aliquots collected in the area.The analysis of the obtained results has enabled to obtain information about the geochemical behaviour in the area of the different radionuclides analyzed; and the conclusion to be drawn that, in the restoration plan under preparation, both the prohibition of outflowing waters from the disposal area to the neighbouring salt-marshes, and the removal of all the efflorescences now disseminated in their surroundings are essential. © 2014 Elsevier Ltd.
publishDate 2017
dc.date.none.fl_str_mv 01/11/2014
2017-06-16T22:02:55Z
2017-06-16T22:02:55Z
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://dx.doi.org/10.1016/j.jenvrad.2014.06.025
0265931X
http://dx.doi.org/10.1016/j.jenvrad.2014.06.025
http://dspace.utpl.edu.ec/handle/123456789/19086
url http://dx.doi.org/10.1016/j.jenvrad.2014.06.025
http://dspace.utpl.edu.ec/handle/123456789/19086
identifier_str_mv 0265931X
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Journal of Environmental Radioactivity
publisher.none.fl_str_mv Journal of Environmental Radioactivity
dc.source.none.fl_str_mv reponame:Repositorio Universidad Técnica Particular de Loja
instname:Universidad Técnica Particular de Loja
instacron:UTPL
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reponame_str Repositorio Universidad Técnica Particular de Loja
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repository.name.fl_str_mv Repositorio Universidad Técnica Particular de Loja - Universidad Técnica Particular de Loja
repository.mail.fl_str_mv .
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