Identification of intermediates, acute toxicity removal and kinetics investigation to the Ametryn treatment by direct photolysis (UV254), UV254/H2O2, Fenton and photo-Fenton processes

This paper reports the degradation of 10 mg L−1 Ametryn solution with different advanced oxidation processes and by ultraviolet (UV254) irradiation alone with the main objective of reducing acute toxicity and increase biodegradability. The investigated factors included Fe2+ and H2O2 concentrations....

Descripción completa

Detalles Bibliográficos
Autores: Martins de Oliveira, Dirce, Pereira Cavalcante, Rodrigo, de Melo da Silva, Lucas, Sans Mazón, Carme, Esplugas Vidal, Santiago, Oliveira, Silvio César de, Machulek Jr., Amílcar
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/186780
Acceso en línea:https://hdl.handle.net/2445/186780
Access Level:acceso abierto
Palabra clave:Herbicides
Biodegradació
Depuració de l'aigua
Biodegradation
Water purification
id ES_3ba05d47f8eb5a8b8a75fa595d660104
oai_identifier_str oai:recercat.cat:2445/186780
network_acronym_str ES
network_name_str España
repository_id_str
spelling Identification of intermediates, acute toxicity removal and kinetics investigation to the Ametryn treatment by direct photolysis (UV254), UV254/H2O2, Fenton and photo-Fenton processesMartins de Oliveira, DircePereira Cavalcante, Rodrigode Melo da Silva, LucasSans Mazón, CarmeEsplugas Vidal, SantiagoOliveira, Silvio César deMachulek Jr., AmílcarHerbicidesBiodegradacióDepuració de l'aiguaHerbicidesBiodegradationWater purificationThis paper reports the degradation of 10 mg L−1 Ametryn solution with different advanced oxidation processes and by ultraviolet (UV254) irradiation alone with the main objective of reducing acute toxicity and increase biodegradability. The investigated factors included Fe2+ and H2O2 concentrations. The effectiveness of the UV254 and UV254/H2O2 processes were investigated using a low-pressure mercury UV lamp (254 nm). Photo-Fenton process was explored using a blacklight blue lamp (BLB, λ = 365 nm). The UV254 irradiation process achieved complete degradation of Ametryn solution after 60 min. The degradation time of Ametryn was greatly improved by the addition of H2O2. It is worth pointing out that a high rate of Ametryn removal was attained even at low concentrations of H2O2. The kinetic constant of the reaction between Ametryn and HO● for UV254/H2O2 was 3.53 × 108 L mol−1 s−1. The complete Ametryn degradation by the Fenton and photo-Fenton processes was observed following 10 min of reaction for various combinations of Fe2+ and H2O2 under investigation. Working with the highest concentration (150 mg L−1 H2O2 and 10 mg L−1 Fe2+), around 30 and 70% of TOC removal were reached within 120 min of treatment by Fenton and photo-Fenton processes, respectively. Although it did not obtain complete mineralization, the intermediates formed in the degradation processes were hydroxylated and did not promote acute toxicity of Vibrio fischeri. Furthermore, a substantial improvement of biodegradability was obtained for all studied processes.Springer Verlag2022202220192022info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion19 p.application/pdfhttps://hdl.handle.net/2445/186780Articles publicats en revistes (Enginyeria Química i Química Analítica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1007/s11356-018-1342-6Environmental Science and Pollution Research, 2019, vol. 26, num. 5, p. 4348-4366https://doi.org/10.1007/s11356-018-1342-6(c) Springer Verlag, 2019info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1867802026-05-29T05:05:01Z
dc.title.none.fl_str_mv Identification of intermediates, acute toxicity removal and kinetics investigation to the Ametryn treatment by direct photolysis (UV254), UV254/H2O2, Fenton and photo-Fenton processes
title Identification of intermediates, acute toxicity removal and kinetics investigation to the Ametryn treatment by direct photolysis (UV254), UV254/H2O2, Fenton and photo-Fenton processes
spellingShingle Identification of intermediates, acute toxicity removal and kinetics investigation to the Ametryn treatment by direct photolysis (UV254), UV254/H2O2, Fenton and photo-Fenton processes
Martins de Oliveira, Dirce
Herbicides
Biodegradació
Depuració de l'aigua
Herbicides
Biodegradation
Water purification
title_short Identification of intermediates, acute toxicity removal and kinetics investigation to the Ametryn treatment by direct photolysis (UV254), UV254/H2O2, Fenton and photo-Fenton processes
title_full Identification of intermediates, acute toxicity removal and kinetics investigation to the Ametryn treatment by direct photolysis (UV254), UV254/H2O2, Fenton and photo-Fenton processes
title_fullStr Identification of intermediates, acute toxicity removal and kinetics investigation to the Ametryn treatment by direct photolysis (UV254), UV254/H2O2, Fenton and photo-Fenton processes
title_full_unstemmed Identification of intermediates, acute toxicity removal and kinetics investigation to the Ametryn treatment by direct photolysis (UV254), UV254/H2O2, Fenton and photo-Fenton processes
title_sort Identification of intermediates, acute toxicity removal and kinetics investigation to the Ametryn treatment by direct photolysis (UV254), UV254/H2O2, Fenton and photo-Fenton processes
dc.creator.none.fl_str_mv Martins de Oliveira, Dirce
Pereira Cavalcante, Rodrigo
de Melo da Silva, Lucas
Sans Mazón, Carme
Esplugas Vidal, Santiago
Oliveira, Silvio César de
Machulek Jr., Amílcar
author Martins de Oliveira, Dirce
author_facet Martins de Oliveira, Dirce
Pereira Cavalcante, Rodrigo
de Melo da Silva, Lucas
Sans Mazón, Carme
Esplugas Vidal, Santiago
Oliveira, Silvio César de
Machulek Jr., Amílcar
author_role author
author2 Pereira Cavalcante, Rodrigo
de Melo da Silva, Lucas
Sans Mazón, Carme
Esplugas Vidal, Santiago
Oliveira, Silvio César de
Machulek Jr., Amílcar
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Herbicides
Biodegradació
Depuració de l'aigua
Herbicides
Biodegradation
Water purification
topic Herbicides
Biodegradació
Depuració de l'aigua
Herbicides
Biodegradation
Water purification
description This paper reports the degradation of 10 mg L−1 Ametryn solution with different advanced oxidation processes and by ultraviolet (UV254) irradiation alone with the main objective of reducing acute toxicity and increase biodegradability. The investigated factors included Fe2+ and H2O2 concentrations. The effectiveness of the UV254 and UV254/H2O2 processes were investigated using a low-pressure mercury UV lamp (254 nm). Photo-Fenton process was explored using a blacklight blue lamp (BLB, λ = 365 nm). The UV254 irradiation process achieved complete degradation of Ametryn solution after 60 min. The degradation time of Ametryn was greatly improved by the addition of H2O2. It is worth pointing out that a high rate of Ametryn removal was attained even at low concentrations of H2O2. The kinetic constant of the reaction between Ametryn and HO● for UV254/H2O2 was 3.53 × 108 L mol−1 s−1. The complete Ametryn degradation by the Fenton and photo-Fenton processes was observed following 10 min of reaction for various combinations of Fe2+ and H2O2 under investigation. Working with the highest concentration (150 mg L−1 H2O2 and 10 mg L−1 Fe2+), around 30 and 70% of TOC removal were reached within 120 min of treatment by Fenton and photo-Fenton processes, respectively. Although it did not obtain complete mineralization, the intermediates formed in the degradation processes were hydroxylated and did not promote acute toxicity of Vibrio fischeri. Furthermore, a substantial improvement of biodegradability was obtained for all studied processes.
publishDate 2019
dc.date.none.fl_str_mv 2019
2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/186780
url https://hdl.handle.net/2445/186780
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1007/s11356-018-1342-6
Environmental Science and Pollution Research, 2019, vol. 26, num. 5, p. 4348-4366
https://doi.org/10.1007/s11356-018-1342-6
dc.rights.none.fl_str_mv (c) Springer Verlag, 2019
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Springer Verlag, 2019
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 19 p.
application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
dc.source.none.fl_str_mv Articles publicats en revistes (Enginyeria Química i Química Analítica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869406318165491712
score 15,198674

Similares en LA Referencia