Optimisation of arsenate removal from water by an integrated ion-exchange membrane process coupled with Fe co-precipitation

Detalhes bibliográficos
Autor(a) principal: Pessoa-Lopes, Mafalda
Data de Publicação: 2020
Outros Autores: Galinha, Claudia F., Crespo, João G., Velizarov, Svetlozar
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/114761
Resumo: UID/QUI/50006/2019 SFRH/BD/103013/2014
id RCAP_ad3cc44481c076e4b7848e84bb288699
oai_identifier_str oai:run.unl.pt:10362/114761
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Optimisation of arsenate removal from water by an integrated ion-exchange membrane process coupled with Fe co-precipitationArsenate removalDonnan dialysisDrinking waterIon-exchange membrane reactorResponse Surface Methodology (RSM)Analytical ChemistryFiltration and SeparationUID/QUI/50006/2019 SFRH/BD/103013/2014The present work investigates the performance of an ion-exchange membrane process for arsenate removal, consisting in integrating Donnan dialytic transport of arsenic with its simultaneous precipitation in a separate receiver compartment. The process performance was improved by adding a bicarbonate-carbonate buffer in the receiver solution, where iron (III) chloride was used to precipitate the arsenic. This system allowed to maintain the treated water pH within the acceptable drinking water range of 6–9, without further control. A Response Surface Methodology (RSM) was used to infer about the effect of the supply water characteristics (initial arsenic concentration and pH) and operating conditions (mass ratio of iron to arsenic) on the degree of arsenic removal. It was found that the initial pH of the receiver solution was also a required input to predict accurately the arsenic concentration in the treated water (for a predefined treatment time). The model developed has a fitting R2 value of 0.99 and a prediction error of 6.6 µg/L of As. The methodology presented permits to develop a simple decision tool (either through the use of equations or visual plots) to determine the effective amount of iron to be used in the treatment of As contaminated water.DQ - Departamento de QuímicaLAQV@REQUIMTERUNPessoa-Lopes, MafaldaGalinha, Claudia F.Crespo, João G.Velizarov, Svetlozar2022-05-01T00:31:09Z2020-09-012020-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/114761eng1383-5866PURE: 20056189https://doi.org/10.1016/j.seppur.2020.116894info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T04:57:32Zoai:run.unl.pt:10362/114761Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:42:37.999072Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Optimisation of arsenate removal from water by an integrated ion-exchange membrane process coupled with Fe co-precipitation
title Optimisation of arsenate removal from water by an integrated ion-exchange membrane process coupled with Fe co-precipitation
spellingShingle Optimisation of arsenate removal from water by an integrated ion-exchange membrane process coupled with Fe co-precipitation
Pessoa-Lopes, Mafalda
Arsenate removal
Donnan dialysis
Drinking water
Ion-exchange membrane reactor
Response Surface Methodology (RSM)
Analytical Chemistry
Filtration and Separation
title_short Optimisation of arsenate removal from water by an integrated ion-exchange membrane process coupled with Fe co-precipitation
title_full Optimisation of arsenate removal from water by an integrated ion-exchange membrane process coupled with Fe co-precipitation
title_fullStr Optimisation of arsenate removal from water by an integrated ion-exchange membrane process coupled with Fe co-precipitation
title_full_unstemmed Optimisation of arsenate removal from water by an integrated ion-exchange membrane process coupled with Fe co-precipitation
title_sort Optimisation of arsenate removal from water by an integrated ion-exchange membrane process coupled with Fe co-precipitation
author Pessoa-Lopes, Mafalda
author_facet Pessoa-Lopes, Mafalda
Galinha, Claudia F.
Crespo, João G.
Velizarov, Svetlozar
author_role author
author2 Galinha, Claudia F.
Crespo, João G.
Velizarov, Svetlozar
author2_role author
author
author
dc.contributor.none.fl_str_mv DQ - Departamento de Química
LAQV@REQUIMTE
RUN
dc.contributor.author.fl_str_mv Pessoa-Lopes, Mafalda
Galinha, Claudia F.
Crespo, João G.
Velizarov, Svetlozar
dc.subject.por.fl_str_mv Arsenate removal
Donnan dialysis
Drinking water
Ion-exchange membrane reactor
Response Surface Methodology (RSM)
Analytical Chemistry
Filtration and Separation
topic Arsenate removal
Donnan dialysis
Drinking water
Ion-exchange membrane reactor
Response Surface Methodology (RSM)
Analytical Chemistry
Filtration and Separation
description UID/QUI/50006/2019 SFRH/BD/103013/2014
publishDate 2020
dc.date.none.fl_str_mv 2020-09-01
2020-09-01T00:00:00Z
2022-05-01T00:31:09Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/114761
url http://hdl.handle.net/10362/114761
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1383-5866
PURE: 20056189
https://doi.org/10.1016/j.seppur.2020.116894
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799138037824749568

Registros relacionados