Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/107420
Title: Effect of Different Radiation Sources and Noble Metal Doped onto TiO2 for Contaminants of Emerging Concern Removal
Authors: Martins, Rui C. 
Domingues, Eva 
Bosio, Morgana
Quina, Margarida J. 
Gmurek, Marta 
Quinta-Ferreira, Rosa M. 
Gomes, João 
Keywords: sunlight; UVA radiation; visible light; decontamination; photocatalytic oxidation; pharmaceuticals
Issue Date: 2019
Publisher: MDPI
Project: FCT - IFCT2014 programme (IF/00215/2014) with financing from the European Social Fund and the Human Potential Operational Programme. 
Mobility Plus (Project No. 1650/MOB/V/2017/0) funded by the Polish Ministry of Science and Higher Education. 
Serial title, monograph or event: Water (Switzerland)
Volume: 11
Issue: 5
Abstract: Water scarcity is a worldwide problem boosted by global warming and pollution of anthropogenic origin. The contaminants of emerging concern in water sources are increasing due to the ine ciency of conventional wastewater treatments, and these should be mitigated. Advanced oxidation processes appear as suitable solutions for decontamination. The photocatalytic oxidation of the mixture of sulfamethoxazole, carbamazepine and lorazepam was investigated. TiO2 modified by Ag and TiO2 modified by Pd were used as photocatalysts to improve photoactivity. The impact of light wavelengths was examined using UVA and visible radiation as well as natural sunlight. Visible light revealed the lowest ability for decontamination in 60 min of irradiation through Ag and Pd–TiO2 photocatalytic oxidation. On the other hand, UVA and sunlight in the presence of photocatalysts were able to totally remove the contaminants. This can be related to the high production of reactive oxidative species at those conditions. The increase of the noble metal load promotes the improvement of the decontamination e ciency. The kinetic rate was analyzed for UVA and sunlight radiation for di erent photocatalytic conditions. The presence of a natural light source without energy costs leads to an increase in the pseudo-first-order kinetic constant. Sunlight radiation with a suitable photocatalyst can be a very good option for water decontamination.
URI: https://hdl.handle.net/10316/107420
ISSN: 2073-4441
DOI: 10.3390/w11050894
Rights: openAccess
Appears in Collections:I&D CIEPQPF - Artigos em Revistas Internacionais

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