Mineralization of pentachlorophenol by ferrioxalate-assisted solar photo-fenton process at mild pH

This work reports the use of ferrioxalate complexes to assist solar photo-Fenton treatment of pentachlorophenol (PCP) in aqueous medium at mild pH, which inhibits the precipitation of iron hydroxides and allows working at a low iron dosage. The experimental parameters were optimized by assessing the...

Descripción completa

Detalles Bibliográficos
Autores: Ye, Zhihong, Sirés Sadornil, Ignacio, Zhang, Hui, Huang, Yao-Hui
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
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:2445/147577
Acceso en línea:https://hdl.handle.net/2445/147577
Access Level:acceso abierto
Palabra clave:Biomineralització
Fenols
Biomineralization
Phenols
id ES_1aedcfee1e11b7f989b9db691e4e23a4
oai_identifier_str oai:recercat.cat:2445/147577
network_acronym_str ES
network_name_str España
repository_id_str
spelling Mineralization of pentachlorophenol by ferrioxalate-assisted solar photo-fenton process at mild pHYe, ZhihongSirés Sadornil, IgnacioZhang, HuiHuang, Yao-HuiBiomineralitzacióFenolsBiomineralizationPhenolsThis work reports the use of ferrioxalate complexes to assist solar photo-Fenton treatment of pentachlorophenol (PCP) in aqueous medium at mild pH, which inhibits the precipitation of iron hydroxides and allows working at a low iron dosage. The experimental parameters were optimized by assessing the effect of initial concentrations of H2O2 (0-2.5 mM) and Fe(II) (2-10 mg/L), pH (3.0-9.0) and iron/oxalic acid molar ratios (1:0-1:13.5) on total organic carbon (TOC) removal. Ferrioxalate-assisted solar photo-Fenton achieved 97.5% mineralization in 120 min, clearly outperforming conventional Fenton and solar photo-Fenton. The presence of photosensitive ferrioxalate complexes accounted for the enhancement, as a result of Fe(II) regeneration that accelerated the hydroxyl radical (OH) production. The time course of H2O2 and Fe(II) concentrations was evaluated under different iron/oxalic acid ratios. The five carboxylic acids determined by ion-exclusion HPLC and the eight aromatic by-products identified by GC-MS allowed the proposal of a degradation pathway that included hydroxylation, dechlorination and dimerization steps. Complete chloride ion release was achieved after 90 min of treatment.Elsevier Ltd2020202020182020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion26 p.application/pdfhttps://hdl.handle.net/2445/147577Articles publicats en revistes (Ciència dels Materials i Química Física)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/10.1016/j.chemosphere.2018.10.221Chemosphere, 2018, vol. 217, p. 475-482https://doi.org/10.1016/j.chemosphere.2018.10.221cc-by-nc-nd (c) Elsevier Ltd, 2018http://creativecommons.org/licenses/by-nc-nd/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1475772026-05-29T05:05:01Z
dc.title.none.fl_str_mv Mineralization of pentachlorophenol by ferrioxalate-assisted solar photo-fenton process at mild pH
title Mineralization of pentachlorophenol by ferrioxalate-assisted solar photo-fenton process at mild pH
spellingShingle Mineralization of pentachlorophenol by ferrioxalate-assisted solar photo-fenton process at mild pH
Ye, Zhihong
Biomineralització
Fenols
Biomineralization
Phenols
title_short Mineralization of pentachlorophenol by ferrioxalate-assisted solar photo-fenton process at mild pH
title_full Mineralization of pentachlorophenol by ferrioxalate-assisted solar photo-fenton process at mild pH
title_fullStr Mineralization of pentachlorophenol by ferrioxalate-assisted solar photo-fenton process at mild pH
title_full_unstemmed Mineralization of pentachlorophenol by ferrioxalate-assisted solar photo-fenton process at mild pH
title_sort Mineralization of pentachlorophenol by ferrioxalate-assisted solar photo-fenton process at mild pH
dc.creator.none.fl_str_mv Ye, Zhihong
Sirés Sadornil, Ignacio
Zhang, Hui
Huang, Yao-Hui
author Ye, Zhihong
author_facet Ye, Zhihong
Sirés Sadornil, Ignacio
Zhang, Hui
Huang, Yao-Hui
author_role author
author2 Sirés Sadornil, Ignacio
Zhang, Hui
Huang, Yao-Hui
author2_role author
author
author
dc.subject.none.fl_str_mv Biomineralització
Fenols
Biomineralization
Phenols
topic Biomineralització
Fenols
Biomineralization
Phenols
description This work reports the use of ferrioxalate complexes to assist solar photo-Fenton treatment of pentachlorophenol (PCP) in aqueous medium at mild pH, which inhibits the precipitation of iron hydroxides and allows working at a low iron dosage. The experimental parameters were optimized by assessing the effect of initial concentrations of H2O2 (0-2.5 mM) and Fe(II) (2-10 mg/L), pH (3.0-9.0) and iron/oxalic acid molar ratios (1:0-1:13.5) on total organic carbon (TOC) removal. Ferrioxalate-assisted solar photo-Fenton achieved 97.5% mineralization in 120 min, clearly outperforming conventional Fenton and solar photo-Fenton. The presence of photosensitive ferrioxalate complexes accounted for the enhancement, as a result of Fe(II) regeneration that accelerated the hydroxyl radical (OH) production. The time course of H2O2 and Fe(II) concentrations was evaluated under different iron/oxalic acid ratios. The five carboxylic acids determined by ion-exclusion HPLC and the eight aromatic by-products identified by GC-MS allowed the proposal of a degradation pathway that included hydroxylation, dechlorination and dimerization steps. Complete chloride ion release was achieved after 90 min of treatment.
publishDate 2018
dc.date.none.fl_str_mv 2018
2020
2020
2020
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/2445/147577
url https://hdl.handle.net/2445/147577
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/10.1016/j.chemosphere.2018.10.221
Chemosphere, 2018, vol. 217, p. 475-482
https://doi.org/10.1016/j.chemosphere.2018.10.221
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier Ltd, 2018
http://creativecommons.org/licenses/by-nc-nd/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier Ltd, 2018
http://creativecommons.org/licenses/by-nc-nd/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 26 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier Ltd
publisher.none.fl_str_mv Elsevier Ltd
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
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_ 1869404135613267968
score 15.81155

Similares en LA Referencia