Screening of heterogeneous catalysts for the activated persulfate oxidation of sulfamethoxazole in aqueous matrices. Does the matrix affect the selection of catalyst?
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/10216/136087 |
Resumo: | BACKGROUND The contribution of persulfate oxidation to water treatment technologies based on advanced oxidation processes is nowadays widely accepted. However, the importance of the water matrix on the removal of micropollutants has been neglected during early screening of heterogeneous catalysts, which can hinder further developments in the field. RESULTS Three magnetic graphitic nanocomposites (MGNCs), obtained by carbon encapsulation of magnetite (Fe3O4), nickel ferrite (NiFe2O4) and cobalt ferrite (CoFe2O4), were prepared and employed as heterogeneous catalysts in the activation of persulfate for the degradation of antibiotic sulfamethoxazole (SMX). The importance of the water matrix and its constituents on the performance of the MGNC materials was assessed. It was found that their relative performance in terms of oxidation of SMX in pure water decreases in the order: NiFe2O4/MGNC > Fe3O4/MGNC > CoFe2O4/MGNC. However, the order changed (Fe3O4/MGNC > NiFe2O4/MGNC > CoFe2O4/MGNC) when drinking water or secondary treated wastewater were employed. The individual effects of the water matrix constituents, such as bicarbonate, chloride, pH, and humic acid, or the use of added radical scavengers, on the catalyst performance were investigated, while the heterogeneous nature of the process was confirmed through leaching tests. CONCLUSION A realistic water matrix should be considered throughout all the steps involved in the evaluation of new heterogeneous catalysts for the activated persulfate oxidation of SMX. Otherwise, misleading conclusions may be drawn, limiting potential improvements of this treatment technology. (c) 2019 Society of Chemical Industry |
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Screening of heterogeneous catalysts for the activated persulfate oxidation of sulfamethoxazole in aqueous matrices. Does the matrix affect the selection of catalyst?BACKGROUND The contribution of persulfate oxidation to water treatment technologies based on advanced oxidation processes is nowadays widely accepted. However, the importance of the water matrix on the removal of micropollutants has been neglected during early screening of heterogeneous catalysts, which can hinder further developments in the field. RESULTS Three magnetic graphitic nanocomposites (MGNCs), obtained by carbon encapsulation of magnetite (Fe3O4), nickel ferrite (NiFe2O4) and cobalt ferrite (CoFe2O4), were prepared and employed as heterogeneous catalysts in the activation of persulfate for the degradation of antibiotic sulfamethoxazole (SMX). The importance of the water matrix and its constituents on the performance of the MGNC materials was assessed. It was found that their relative performance in terms of oxidation of SMX in pure water decreases in the order: NiFe2O4/MGNC > Fe3O4/MGNC > CoFe2O4/MGNC. However, the order changed (Fe3O4/MGNC > NiFe2O4/MGNC > CoFe2O4/MGNC) when drinking water or secondary treated wastewater were employed. The individual effects of the water matrix constituents, such as bicarbonate, chloride, pH, and humic acid, or the use of added radical scavengers, on the catalyst performance were investigated, while the heterogeneous nature of the process was confirmed through leaching tests. CONCLUSION A realistic water matrix should be considered throughout all the steps involved in the evaluation of new heterogeneous catalysts for the activated persulfate oxidation of SMX. Otherwise, misleading conclusions may be drawn, limiting potential improvements of this treatment technology. (c) 2019 Society of Chemical Industry20192019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10216/136087eng0268-257510.1002/jctb.6080Rui S. RibeiroZacharias FrontistisDionissios MantzavinosAdrián M. T. SilvaJoaquim L. FariaHelder T. GomesAdrián M.T. Silvainfo: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:RCAAP2023-11-29T12:50:03Zoai:repositorio-aberto.up.pt:10216/136087Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:27:44.554491Repositório 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 |
Screening of heterogeneous catalysts for the activated persulfate oxidation of sulfamethoxazole in aqueous matrices. Does the matrix affect the selection of catalyst? |
title |
Screening of heterogeneous catalysts for the activated persulfate oxidation of sulfamethoxazole in aqueous matrices. Does the matrix affect the selection of catalyst? |
spellingShingle |
Screening of heterogeneous catalysts for the activated persulfate oxidation of sulfamethoxazole in aqueous matrices. Does the matrix affect the selection of catalyst? Rui S. Ribeiro |
title_short |
Screening of heterogeneous catalysts for the activated persulfate oxidation of sulfamethoxazole in aqueous matrices. Does the matrix affect the selection of catalyst? |
title_full |
Screening of heterogeneous catalysts for the activated persulfate oxidation of sulfamethoxazole in aqueous matrices. Does the matrix affect the selection of catalyst? |
title_fullStr |
Screening of heterogeneous catalysts for the activated persulfate oxidation of sulfamethoxazole in aqueous matrices. Does the matrix affect the selection of catalyst? |
title_full_unstemmed |
Screening of heterogeneous catalysts for the activated persulfate oxidation of sulfamethoxazole in aqueous matrices. Does the matrix affect the selection of catalyst? |
title_sort |
Screening of heterogeneous catalysts for the activated persulfate oxidation of sulfamethoxazole in aqueous matrices. Does the matrix affect the selection of catalyst? |
author |
Rui S. Ribeiro |
author_facet |
Rui S. Ribeiro Zacharias Frontistis Dionissios Mantzavinos Adrián M. T. Silva Joaquim L. Faria Helder T. Gomes Adrián M.T. Silva |
author_role |
author |
author2 |
Zacharias Frontistis Dionissios Mantzavinos Adrián M. T. Silva Joaquim L. Faria Helder T. Gomes Adrián M.T. Silva |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Rui S. Ribeiro Zacharias Frontistis Dionissios Mantzavinos Adrián M. T. Silva Joaquim L. Faria Helder T. Gomes Adrián M.T. Silva |
description |
BACKGROUND The contribution of persulfate oxidation to water treatment technologies based on advanced oxidation processes is nowadays widely accepted. However, the importance of the water matrix on the removal of micropollutants has been neglected during early screening of heterogeneous catalysts, which can hinder further developments in the field. RESULTS Three magnetic graphitic nanocomposites (MGNCs), obtained by carbon encapsulation of magnetite (Fe3O4), nickel ferrite (NiFe2O4) and cobalt ferrite (CoFe2O4), were prepared and employed as heterogeneous catalysts in the activation of persulfate for the degradation of antibiotic sulfamethoxazole (SMX). The importance of the water matrix and its constituents on the performance of the MGNC materials was assessed. It was found that their relative performance in terms of oxidation of SMX in pure water decreases in the order: NiFe2O4/MGNC > Fe3O4/MGNC > CoFe2O4/MGNC. However, the order changed (Fe3O4/MGNC > NiFe2O4/MGNC > CoFe2O4/MGNC) when drinking water or secondary treated wastewater were employed. The individual effects of the water matrix constituents, such as bicarbonate, chloride, pH, and humic acid, or the use of added radical scavengers, on the catalyst performance were investigated, while the heterogeneous nature of the process was confirmed through leaching tests. CONCLUSION A realistic water matrix should be considered throughout all the steps involved in the evaluation of new heterogeneous catalysts for the activated persulfate oxidation of SMX. Otherwise, misleading conclusions may be drawn, limiting potential improvements of this treatment technology. (c) 2019 Society of Chemical Industry |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 2019-01-01T00:00:00Z |
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 |
https://hdl.handle.net/10216/136087 |
url |
https://hdl.handle.net/10216/136087 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0268-2575 10.1002/jctb.6080 |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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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 |
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1799135583574949888 |