Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/29523
Title: Removal of contaminants of emerging concern (CECs) and antibiotic resistant bacteria in urban wastewater using UVA/TiO2/H2O2 photocatalysis
Authors: Jiménez-Tototzintle, Margarita
Ferreira, Izabel Jales
Duque, Sheila da Silva
Barrocas, Paulo Rubens Guimarães
Saggioro, Enrico Mendes
Affilliation: Fundação Oswaldo Cruz. Escola Nacional de Saúde Pública Sérgio Arouca. Centro de Estudos da Saúde do Trabalhador e Ecologia Humana. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Escola Nacional de Saúde Pública Sérgio Arouca. Centro de Estudos da Saúde do Trabalhador e Ecologia Humana. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Bacteriologia. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Escola Nacional de Saúde Pública Sérgio Arouca. Departamento de Saneamento e Saúde Ambiental. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Escola Nacional de Saúde Pública Sérgio Arouca. Centro de Estudos da Saúde do Trabalhador e Ecologia Humana. Rio de Janeiro, RJ. Brasil / Fundação Oswaldo Cruz. Escola Nacional de Saúde Pública Sérgio Arouca. Departamento de Saneamento e Saúde Ambiental. Rio de Janeiro, RJ, Brasil..
Abstract: The dispersion of pollutants and proliferation of antibiotic resistant bacteria in the aquatic environment are an emerging health concern worldwide. In this sense, it is essential to develop new technologies to increase the quality of wastewater treatment, which is spread throughout the environment. The present study has demonstrated evidence of the existence of antibiotic and mercury-resistant bacteria in the aquatic environment. The application of heterogeneous photocatalysis with UVA/TiO2 P25 slurry (200 mg L-1), UVA/TiO2-immobilized, and UVA/TiO2-immobilized/H2O2 were evaluated for the simultaneous elimination of a mixture of contaminants of emerging concern (acetamiprid (ACP), imazalil (IMZ) and bisphenol A (BPA)) and inactivation of antibiotic and mercury-resistant bacteria (Pseudomonas aeruginosa and Bacillus subtilis). UVA/TiO2-immobilized/H2O2 increased the inactivation and elimination of the contaminants. After the combined treatment, the mixture of BPA, IMZ and ACP decreased 62%, 21% and <5%, respectively, after 300 min at 13.10 kJ L-1 of accumulated UV energy. The Pseudomonas aeruginosa strain was inactivated after 120 min using 5.24 kJ L-1 of accumulated UV energy, whereas the Bacillus subtilis strain was shown to be extremely resistant, with a capacity to develop mechanisms to avoid the oxidation process.
Keywords: Photocatalysis
H2O2
Bacterial inactivation
Antibiotic resistant bacteria
keywords: Fotocatálise
Inativação bacteriana
Bactérias resistentes aos antibióticos
DeCS: Peróxido de Hidrogênio
Issue Date: 2018
Publisher: Elsevier
Citation: JIMÉNEZ-TOTOTZINTLE, Margarita; et al. Removal of contaminants of emerging concern (CECs) and antibiotic resistant bacteria in urban wastewater using UVA/TiO2/H2O2 photocatalysis. Chemosphere, v.210, p.449-457, July 2018.
DOI: 10.1016/j.chemosphere.2018.07.036
ISSN: 0045-6535
Copyright: restricted access
Appears in Collections:IOC - Artigos de Periódicos

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