Solvent Extraction with Cyanex 923 to Remove Arsenic(V) from Solutions

The removal of harmful arsenic(V) from aqueous solutions using Cyanex 923 (solvation extractant) was investigated using various experimental variables: equilibration time, the acidity of the aqueous phase, temperature, extractant and arsenic concentrations, and O/A ratio. Cyanex 923 extracted As(V)...

ver descrição completa

Detalhes bibliográficos
Autores: Alguacil, Francisco José, Escudero, Esther, Robla, J. I.
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2024
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/345215
Acesso em linha:http://hdl.handle.net/10261/345215
Access Level:Acceso aberto
Palavra-chave:Arsenic(V)
Cyanex 923
Extraction
Stripping
Acidic solutions
id ES_b205cf0ca11ee3cdee9481362addffff
oai_identifier_str oai:digital.csic.es:10261/345215
network_acronym_str ES
network_name_str España
repository_id_str
spelling Solvent Extraction with Cyanex 923 to Remove Arsenic(V) from SolutionsAlguacil, Francisco JoséEscudero, EstherRobla, J. I.Arsenic(V)Cyanex 923ExtractionStrippingAcidic solutionsThe removal of harmful arsenic(V) from aqueous solutions using Cyanex 923 (solvation extractant) was investigated using various experimental variables: equilibration time, the acidity of the aqueous phase, temperature, extractant and arsenic concentrations, and O/A ratio. Cyanex 923 extracted As(V) (and sulfuric acid) from acidic solutions; however, it could not be used to remove the metal from slightly acid or neutral solutions. The extraction of arsenic is exothermic and responded to the formation of H3AsO4·nL species in the organic phase (L represents the extractant, and the stoichiometric factor, n = 1 or 2, depends on the acidity of the aqueous phase). Extraction isotherms are derived from the experimental results. Both arsenic and sulfuric acid loaded onto the organic phase can be stripped with water, and stripping isotherms are also derived from the experimental results. The selectivity of the system against the presence of other metals (Cu(II), Ni(II), Bi(III), and Sb(III)) is investigated, and the ability of Cyanex 923 to extract As(V) and sulfuric acid compared to the use of other P=O-based solvation reagents, such dibutyl butylphosphonate (DBBP) and tri-butyl phosphate (TBP), is also investigated.This research was funded by CSIC grant number Project 202250E019.Peer reviewedMultidisciplinary Digital Publishing InstituteConsejo Superior de Investigaciones Científicas (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2024202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/345215reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3390/molecules29020470Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3452152026-05-22T06:33:51Z
dc.title.none.fl_str_mv Solvent Extraction with Cyanex 923 to Remove Arsenic(V) from Solutions
title Solvent Extraction with Cyanex 923 to Remove Arsenic(V) from Solutions
spellingShingle Solvent Extraction with Cyanex 923 to Remove Arsenic(V) from Solutions
Alguacil, Francisco José
Arsenic(V)
Cyanex 923
Extraction
Stripping
Acidic solutions
title_short Solvent Extraction with Cyanex 923 to Remove Arsenic(V) from Solutions
title_full Solvent Extraction with Cyanex 923 to Remove Arsenic(V) from Solutions
title_fullStr Solvent Extraction with Cyanex 923 to Remove Arsenic(V) from Solutions
title_full_unstemmed Solvent Extraction with Cyanex 923 to Remove Arsenic(V) from Solutions
title_sort Solvent Extraction with Cyanex 923 to Remove Arsenic(V) from Solutions
dc.creator.none.fl_str_mv Alguacil, Francisco José
Escudero, Esther
Robla, J. I.
author Alguacil, Francisco José
author_facet Alguacil, Francisco José
Escudero, Esther
Robla, J. I.
author_role author
author2 Escudero, Esther
Robla, J. I.
author2_role author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Arsenic(V)
Cyanex 923
Extraction
Stripping
Acidic solutions
topic Arsenic(V)
Cyanex 923
Extraction
Stripping
Acidic solutions
description The removal of harmful arsenic(V) from aqueous solutions using Cyanex 923 (solvation extractant) was investigated using various experimental variables: equilibration time, the acidity of the aqueous phase, temperature, extractant and arsenic concentrations, and O/A ratio. Cyanex 923 extracted As(V) (and sulfuric acid) from acidic solutions; however, it could not be used to remove the metal from slightly acid or neutral solutions. The extraction of arsenic is exothermic and responded to the formation of H3AsO4·nL species in the organic phase (L represents the extractant, and the stoichiometric factor, n = 1 or 2, depends on the acidity of the aqueous phase). Extraction isotherms are derived from the experimental results. Both arsenic and sulfuric acid loaded onto the organic phase can be stripped with water, and stripping isotherms are also derived from the experimental results. The selectivity of the system against the presence of other metals (Cu(II), Ni(II), Bi(III), and Sb(III)) is investigated, and the ability of Cyanex 923 to extract As(V) and sulfuric acid compared to the use of other P=O-based solvation reagents, such dibutyl butylphosphonate (DBBP) and tri-butyl phosphate (TBP), is also investigated.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
2024
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/10261/345215
url http://hdl.handle.net/10261/345215
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3390/molecules29020470
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
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
_version_ 1869417018644496384
score 15.228081

Registros relacionados