AustralieFrV1, Main, Exploration, bibRecord, 004D44

Photocatalytic degradation of endocrine disruptor compounds under simulated solar light

Identifieur interne : 004D44 ( Main/Exploration ); précédent : 004D43; suivant : 004D45

Photocatalytic degradation of endocrine disruptor compounds under simulated solar light

Auteurs : Vanessa Maroga Mboula [France] ; Valérie Hequet [France] ; Yves Andres [France] ; Luisa Maria Pastrana-Martinez [Portugal] ; José Miguel Dona-Rodriguez [Espagne] ; Adrián M. T. Silva [Portugal] ; Polycarpos Falaras [Grèce]

Source :

Water research : (Oxford) [ 0043-1354 ] ; 2013.

RBID : Pascal:13-0368075

Descripteurs français

Pascal (Inist)
- Dégradation photochimique, Photocatalyse, Perturbateur endocrinien, Rayonnement solaire, Activité biologique, Mécanisme réaction, Nanotechnologie, Nanomatériau, Devenir polluant.
Wicri :
- topic : Nanotechnologie.

English descriptors

KwdEn :
- Biological activity, Endocrine disruptor, Nanostructured materials, Nanotechnology, Photocatalysis, Photochemical degradation, Pollutant behavior, Reaction mechanism, Solar radiation.

Abstract

Nanostructured titanium materials with high UV-visible activity were synthesized in the collaborative project Clean Water FP7. In this study, the efficiency of some of these catalysts to degrade endocrine disruptor compounds, using bisphenol A as the model compound, was evaluated. Titanium dioxide P25 (AEROXIDE® TiO₂, Evonik Degussa) was used as the reference. The photocatalytic degradation was carried out under the UV part of a simulated solar light (280-400 nm) and under the full spectrum of a simulated solar light (200 nm-30 μm). Catalytic efficiency was assessed using several indicators such as the conversion yield, the mineralization yield, by-product formation and the endocrine disruption effect of by-products. The new synthesized catalysts exhibited a significant degradation of bisphenol A, with the so-called ECT-1023t being the most efficient. The intermediates formed during photocatalytic degradation experiments with ECT-1023t as catalyst were monitored and identified. The estrogenic effect of the intermediates was also evaluated in vivo using a ChgH-GFP transgenic medaka line. The results obtained show that the formation of intermediates is related to the nature of the catalyst and depends on the experimental conditions. Moreover, under simulated UV, in contrast with the results obtained using P25, the by-products formed with ECT-1023t as catalyst do not present an estrogenic effect.

Affiliations:

Espagne, France, Grèce, Portugal
Attique (région), Canaries, Pays de la Loire
Athènes, Nantes

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Le document en format XML

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<term>Photochemical degradation</term>
<term>Pollutant behavior</term>
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<front><div type="abstract" xml:lang="en">Nanostructured titanium materials with high UV-visible activity were synthesized in the collaborative project Clean Water FP7. In this study, the efficiency of some of these catalysts to degrade endocrine disruptor compounds, using bisphenol A as the model compound, was evaluated. Titanium dioxide P25 (AEROXIDE® TiO<sub>2</sub>
, Evonik Degussa) was used as the reference. The photocatalytic degradation was carried out under the UV part of a simulated solar light (280-400 nm) and under the full spectrum of a simulated solar light (200 nm-30 μm). Catalytic efficiency was assessed using several indicators such as the conversion yield, the mineralization yield, by-product formation and the endocrine disruption effect of by-products. The new synthesized catalysts exhibited a significant degradation of bisphenol A, with the so-called ECT-1023t being the most efficient. The intermediates formed during photocatalytic degradation experiments with ECT-1023t as catalyst were monitored and identified. The estrogenic effect of the intermediates was also evaluated in vivo using a ChgH-GFP transgenic medaka line. The results obtained show that the formation of intermediates is related to the nature of the catalyst and depends on the experimental conditions. Moreover, under simulated UV, in contrast with the results obtained using P25, the by-products formed with ECT-1023t as catalyst do not present an estrogenic effect.</div>
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<name sortKey="Silva, Adrian M T" sort="Silva, Adrian M T" uniqKey="Silva A" first="Adrián M. T." last="Silva">Adrián M. T. Silva</name>
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<country name="Espagne"><region name="Canaries"><name sortKey="Dona Rodriguez, Jose Miguel" sort="Dona Rodriguez, Jose Miguel" uniqKey="Dona Rodriguez J" first="José Miguel" last="Dona-Rodriguez">José Miguel Dona-Rodriguez</name>
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<country name="Grèce"><region name="Attique (région)"><name sortKey="Falaras, Polycarpos" sort="Falaras, Polycarpos" uniqKey="Falaras P" first="Polycarpos" last="Falaras">Polycarpos Falaras</name>
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Photocatalytic degradation of endocrine disruptor compounds under simulated solar light

Photocatalytic degradation of endocrine disruptor compounds under simulated solar light

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri