Photocatalytic degradation of estradiol under simulated solar light and assessment of estrogenic activity

• Type: Article in International Scientific Journal
• Date: 2015

Authors

V. Maroga Mboula (Author) Other; V. Héquet (Author) Other; Y. Andrès (Author) Other; Y. Gru (Author) Other; R. Colin (Author) Other; J. M. Doña-Rodríguez (Author) Other; L. M. Pastrana-Martínez (Author) FEUP; A .M. T. Silva (Author) FEUP; M. Leleu (Author) Other; A. J. Tindall (Author) Other; S. Mateos (Author) Other; P. Falaras (Author) Other

Journal

Title: Applied Catalysis B: Environmental

Vol. 162

Pages: 437-444

ISSN: 0926-3373

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 26 Citations

ISI Web of Science

Scopus - 45 Citations

Associated Projects

LA 20 - Projeto Estratégico-LA 20 - 2011-2012

LSRE-LCM - Laboratório de Processos de Separação e Reação - Laboratório de Catálise e Materiais

Other information

Authenticus ID: P-009-QGY

DOI: 10.1016/j.apcatb.2014.05.026

Abstract (EN): The ability of nanostructured titanium materials developed in the FP7/EU collaborative Clean Water project to photocatalytically degrade pollutants was tested, using 17 beta-estradiol (E2) as the model compound. The photocatalytic degradation of E2 was carried out under simulated solar light (both the UV part (280-400 nm) and full spectrum (200 nm-30 mu m)). The efficiency of the process was assessed using several indicators including the conversion yield, the mineralization yield, the formation of by-products and their endocrine disrupting effects. The newly synthesized catalysts significantly degraded E2 and their efficiency was found to depend on the irradiation wavelength range. Some of the intermediates formed during the photocatalytic treatment with ECT-1023t and Evonik P25 were identified and their estrogenic effect was evaluated in vivo using the ChgH-GFP transgenic medaka line. This analysis confirmed that in the structure of the identified by-products, the phenol group is not destroyed and that the estrogenic effect is still present in the corresponding solution. The persistence of the estrogenic effect after the photocatalytic treatment is hypothesized to be due to the presence of the phenol group in the by-products. (C) 2014 Published by Elsevier B.V.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8