Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived Photosensitizer

Autores
Avetta, Paola; Bella, Federico; Bianco Prevot, A.; Laurenti, Enzo; Montoneri, Enzo; Arques, Antonio; Carlos, Luciano
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Soluble bio-based substances (SBO) have been isolated from urban waste. Their structural similarity with natural organic matter suggested exploring their activity in the photodegradation of organic substrates. In this work, they are shown to promote the photodegradation of monochlorophenols. Experiments performed with 1.0 × 10−4 M substrate solutions irradiated by simulated solar light in the presence of SBO showed the progressive degradation of all the probe substrates. The experimental data were fitted to a pseudo-first-order kinetics, and the rate constant was found to decrease in the following order: 2-chlorophenol > 3- chlorophenol > 4-chlorophenol. The effect of pH and SBO concentration on chlorophenols degradation was assessed. Experiments performed in the presence of selective scavengers along with EPR measurements supported the main role of singlet oxygen in the substrate photo degradation mechanism. Toxicity assays showed that the photodegradation of chlorophenols in the presence of SBO is accompanied with a progressive up to complete detoxification of the system. Moreover, no significant contribution of SBO to the whole system toxicity was observed. The results show how urban wastes can be a resource of photosensitizing bio-based substances to be explored in wastewater treatments.
Fil: Avetta, Paola . Università  Di Torino; Italia
Fil: Bella, Federico . Istituto Italiano di Tecnologia. Center for Space Robotics; Italia
Fil: Bianco Prevot, A.. Universitá  Di Torino; Italia
Fil: Laurenti, Enzo . Università  Di Torino; Italia
Fil: Montoneri, Enzo . Università  Di Torino; Italia
Fil: Arques, Antonio . Universidad Politecnica de Valencia; España
Fil: Carlos, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Materia
Biowaste
Photolysis
Chlorophenols
Wastewater
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/5328
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived PhotosensitizerAvetta, Paola Bella, Federico Bianco Prevot, A.Laurenti, Enzo Montoneri, Enzo Arques, Antonio Carlos, LucianoBiowastePhotolysisChlorophenolsWastewaterhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2https://purl.org/becyt/ford/2.7https://purl.org/becyt/ford/2Soluble bio-based substances (SBO) have been isolated from urban waste. Their structural similarity with natural organic matter suggested exploring their activity in the photodegradation of organic substrates. In this work, they are shown to promote the photodegradation of monochlorophenols. Experiments performed with 1.0 × 10−4 M substrate solutions irradiated by simulated solar light in the presence of SBO showed the progressive degradation of all the probe substrates. The experimental data were fitted to a pseudo-first-order kinetics, and the rate constant was found to decrease in the following order: 2-chlorophenol > 3- chlorophenol > 4-chlorophenol. The effect of pH and SBO concentration on chlorophenols degradation was assessed. Experiments performed in the presence of selective scavengers along with EPR measurements supported the main role of singlet oxygen in the substrate photo degradation mechanism. Toxicity assays showed that the photodegradation of chlorophenols in the presence of SBO is accompanied with a progressive up to complete detoxification of the system. Moreover, no significant contribution of SBO to the whole system toxicity was observed. The results show how urban wastes can be a resource of photosensitizing bio-based substances to be explored in wastewater treatments.Fil: Avetta, Paola . Università  Di Torino; ItaliaFil: Bella, Federico . Istituto Italiano di Tecnologia. Center for Space Robotics; ItaliaFil: Bianco Prevot, A.. Universitá  Di Torino; ItaliaFil: Laurenti, Enzo . Università  Di Torino; ItaliaFil: Montoneri, Enzo . Università  Di Torino; ItaliaFil: Arques, Antonio . Universidad Politecnica de Valencia; EspañaFil: Carlos, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaAmerican Chemical Society2013-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5328Avetta, Paola ; Bella, Federico ; Bianco Prevot, A.; Laurenti, Enzo ; Montoneri, Enzo ; et al.; Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived Photosensitizer; American Chemical Society; ACS Sustaninable Chemistry & Engineering; 1; 12; 8-2013; 1545-15502168-0485enginfo:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/sc400294zinfo:eu-repo/semantics/altIdentifier/doi/10.1021/sc400294zinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:52:10Zoai:ri.conicet.gov.ar:11336/5328instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:52:11.191CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived Photosensitizer
title Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived Photosensitizer
spellingShingle Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived Photosensitizer
Avetta, Paola
Biowaste
Photolysis
Chlorophenols
Wastewater
title_short Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived Photosensitizer
title_full Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived Photosensitizer
title_fullStr Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived Photosensitizer
title_full_unstemmed Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived Photosensitizer
title_sort Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived Photosensitizer
dc.creator.none.fl_str_mv Avetta, Paola
Bella, Federico
Bianco Prevot, A.
Laurenti, Enzo
Montoneri, Enzo
Arques, Antonio
Carlos, Luciano
author Avetta, Paola
author_facet Avetta, Paola
Bella, Federico
Bianco Prevot, A.
Laurenti, Enzo
Montoneri, Enzo
Arques, Antonio
Carlos, Luciano
author_role author
author2 Bella, Federico
Bianco Prevot, A.
Laurenti, Enzo
Montoneri, Enzo
Arques, Antonio
Carlos, Luciano
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Biowaste
Photolysis
Chlorophenols
Wastewater
topic Biowaste
Photolysis
Chlorophenols
Wastewater
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/2.7
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Soluble bio-based substances (SBO) have been isolated from urban waste. Their structural similarity with natural organic matter suggested exploring their activity in the photodegradation of organic substrates. In this work, they are shown to promote the photodegradation of monochlorophenols. Experiments performed with 1.0 × 10−4 M substrate solutions irradiated by simulated solar light in the presence of SBO showed the progressive degradation of all the probe substrates. The experimental data were fitted to a pseudo-first-order kinetics, and the rate constant was found to decrease in the following order: 2-chlorophenol > 3- chlorophenol > 4-chlorophenol. The effect of pH and SBO concentration on chlorophenols degradation was assessed. Experiments performed in the presence of selective scavengers along with EPR measurements supported the main role of singlet oxygen in the substrate photo degradation mechanism. Toxicity assays showed that the photodegradation of chlorophenols in the presence of SBO is accompanied with a progressive up to complete detoxification of the system. Moreover, no significant contribution of SBO to the whole system toxicity was observed. The results show how urban wastes can be a resource of photosensitizing bio-based substances to be explored in wastewater treatments.
Fil: Avetta, Paola . Università  Di Torino; Italia
Fil: Bella, Federico . Istituto Italiano di Tecnologia. Center for Space Robotics; Italia
Fil: Bianco Prevot, A.. Universitá  Di Torino; Italia
Fil: Laurenti, Enzo . Università  Di Torino; Italia
Fil: Montoneri, Enzo . Università  Di Torino; Italia
Fil: Arques, Antonio . Universidad Politecnica de Valencia; España
Fil: Carlos, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
description Soluble bio-based substances (SBO) have been isolated from urban waste. Their structural similarity with natural organic matter suggested exploring their activity in the photodegradation of organic substrates. In this work, they are shown to promote the photodegradation of monochlorophenols. Experiments performed with 1.0 × 10−4 M substrate solutions irradiated by simulated solar light in the presence of SBO showed the progressive degradation of all the probe substrates. The experimental data were fitted to a pseudo-first-order kinetics, and the rate constant was found to decrease in the following order: 2-chlorophenol > 3- chlorophenol > 4-chlorophenol. The effect of pH and SBO concentration on chlorophenols degradation was assessed. Experiments performed in the presence of selective scavengers along with EPR measurements supported the main role of singlet oxygen in the substrate photo degradation mechanism. Toxicity assays showed that the photodegradation of chlorophenols in the presence of SBO is accompanied with a progressive up to complete detoxification of the system. Moreover, no significant contribution of SBO to the whole system toxicity was observed. The results show how urban wastes can be a resource of photosensitizing bio-based substances to be explored in wastewater treatments.
publishDate 2013
dc.date.none.fl_str_mv 2013-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/5328
Avetta, Paola ; Bella, Federico ; Bianco Prevot, A.; Laurenti, Enzo ; Montoneri, Enzo ; et al.; Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived Photosensitizer; American Chemical Society; ACS Sustaninable Chemistry & Engineering; 1; 12; 8-2013; 1545-1550
2168-0485
url http://hdl.handle.net/11336/5328
identifier_str_mv Avetta, Paola ; Bella, Federico ; Bianco Prevot, A.; Laurenti, Enzo ; Montoneri, Enzo ; et al.; Waste Cleaning Waste: Photodegradation of Monochlorophenols in the Presence of Waste-Derived Photosensitizer; American Chemical Society; ACS Sustaninable Chemistry & Engineering; 1; 12; 8-2013; 1545-1550
2168-0485
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/sc400294z
info:eu-repo/semantics/altIdentifier/doi/10.1021/sc400294z
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613601104494592
score 13.069144

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