Valorisation diagnosis of waste from the decontamination of phosphogypsum leachates through a combined calcium carbonate/hydroxide process

Phosphogypsum is an industrial waste considered as naturally occurring radioactive material. Stack disposal and exposure to the environmental condition involve the production of acid leachates with high potential pollutant loads as heavy metals and radionuclides. In this study, a sequential neutrali...

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Detalhes bibliográficos
Autores: Soto Cruz, Francisco Javier, Pérez Moreno, Silvia María, Ceccotti Rodríguez, Estefanía Inés, Barba Lobo, Alejandro, Bolívar Raya, Juan Pedro, Casas Ruiz, Melquiades, Gázquez González, Manuel Jesús
Tipo de documento: artigo
Data de publicação:2024
País:España
Recursos:Universidad de Huelva (UHU)
Repositório:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:inglês
OAI Identifier:oai:ariasmontano.uhu.es:10272/23964
Acesso em linha:https://hdl.handle.net/10272/23964
Access Level:Acceso aberto
Palavra-chave:Phosphogypsum leachate
Neutralisation
NORM waste
Valorisation diagnosis
Environmental impact
33 Ciencias Tecnológicas
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spelling Valorisation diagnosis of waste from the decontamination of phosphogypsum leachates through a combined calcium carbonate/hydroxide processSoto Cruz, Francisco JavierPérez Moreno, Silvia MaríaCeccotti Rodríguez, Estefanía InésBarba Lobo, AlejandroBolívar Raya, Juan PedroCasas Ruiz, MelquiadesGázquez González, Manuel JesúsPhosphogypsum leachateNeutralisationNORM wasteValorisation diagnosisEnvironmental impact33 Ciencias TecnológicasPhosphogypsum is an industrial waste considered as naturally occurring radioactive material. Stack disposal and exposure to the environmental condition involve the production of acid leachates with high potential pollutant loads as heavy metals and radionuclides. In this study, a sequential neutralisation process was applied for cleaning the generated releases, and the two obtained residues were characterised from the physical-chemical and radiological point of view before their valorisation. The cleaning process was made up of two steps: the first one using calcium carbonate until pH = 3.5, and the second one using calcium hydroxide until pH = 12. The residue obtained in the first step was mostly calcium fluoride, while in the second step most phosphates were precipitated, mainly as hydroxyapatite. The final liquid was treated to reduce pH lower than 9, which is the limit included in the current directive for discharges of liquid effluents into coastal waters. The main conclusion was that the solids from the first step could be valorised as an additive in the manufacture of commercial Portland cements and ceramics, while the solids from the second step could be used as raw material for the phosphoric acid manufacture.Elsevier20242024-05-0120242024-05-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10272/23964reponame: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:10272/239642026-06-02T14:58:11Z
dc.title.none.fl_str_mv Valorisation diagnosis of waste from the decontamination of phosphogypsum leachates through a combined calcium carbonate/hydroxide process
title Valorisation diagnosis of waste from the decontamination of phosphogypsum leachates through a combined calcium carbonate/hydroxide process
spellingShingle Valorisation diagnosis of waste from the decontamination of phosphogypsum leachates through a combined calcium carbonate/hydroxide process
Soto Cruz, Francisco Javier
Phosphogypsum leachate
Neutralisation
NORM waste
Valorisation diagnosis
Environmental impact
33 Ciencias Tecnológicas
title_short Valorisation diagnosis of waste from the decontamination of phosphogypsum leachates through a combined calcium carbonate/hydroxide process
title_full Valorisation diagnosis of waste from the decontamination of phosphogypsum leachates through a combined calcium carbonate/hydroxide process
title_fullStr Valorisation diagnosis of waste from the decontamination of phosphogypsum leachates through a combined calcium carbonate/hydroxide process
title_full_unstemmed Valorisation diagnosis of waste from the decontamination of phosphogypsum leachates through a combined calcium carbonate/hydroxide process
title_sort Valorisation diagnosis of waste from the decontamination of phosphogypsum leachates through a combined calcium carbonate/hydroxide process
dc.creator.none.fl_str_mv Soto Cruz, Francisco Javier
Pérez Moreno, Silvia María
Ceccotti Rodríguez, Estefanía Inés
Barba Lobo, Alejandro
Bolívar Raya, Juan Pedro
Casas Ruiz, Melquiades
Gázquez González, Manuel Jesús
author Soto Cruz, Francisco Javier
author_facet Soto Cruz, Francisco Javier
Pérez Moreno, Silvia María
Ceccotti Rodríguez, Estefanía Inés
Barba Lobo, Alejandro
Bolívar Raya, Juan Pedro
Casas Ruiz, Melquiades
Gázquez González, Manuel Jesús
author_role author
author2 Pérez Moreno, Silvia María
Ceccotti Rodríguez, Estefanía Inés
Barba Lobo, Alejandro
Bolívar Raya, Juan Pedro
Casas Ruiz, Melquiades
Gázquez González, Manuel Jesús
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Phosphogypsum leachate
Neutralisation
NORM waste
Valorisation diagnosis
Environmental impact
33 Ciencias Tecnológicas
topic Phosphogypsum leachate
Neutralisation
NORM waste
Valorisation diagnosis
Environmental impact
33 Ciencias Tecnológicas
description Phosphogypsum is an industrial waste considered as naturally occurring radioactive material. Stack disposal and exposure to the environmental condition involve the production of acid leachates with high potential pollutant loads as heavy metals and radionuclides. In this study, a sequential neutralisation process was applied for cleaning the generated releases, and the two obtained residues were characterised from the physical-chemical and radiological point of view before their valorisation. The cleaning process was made up of two steps: the first one using calcium carbonate until pH = 3.5, and the second one using calcium hydroxide until pH = 12. The residue obtained in the first step was mostly calcium fluoride, while in the second step most phosphates were precipitated, mainly as hydroxyapatite. The final liquid was treated to reduce pH lower than 9, which is the limit included in the current directive for discharges of liquid effluents into coastal waters. The main conclusion was that the solids from the first step could be valorised as an additive in the manufacture of commercial Portland cements and ceramics, while the solids from the second step could be used as raw material for the phosphoric acid manufacture.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-05-01
2024
2024-05-01
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/10272/23964
url https://hdl.handle.net/10272/23964
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 15,228081

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