Removal of contaminants of emerging concern (CECs) and antibiotic resistant bacteria in urban wastewater using UVA/TiO2 /H2 O2 photocatalysis

Chemosphere
Margarita Jiménez-TototzintleEnrico Mendes Saggioro

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 ...Continue Reading

Citations

Jun 10, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·B S Choudri, Yassine Charabi
Sep 1, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Bo LiuChein-Chi Chang
Jun 25, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Magdalena PazdaEwa Mulkiewicz
Jan 9, 2021·Chemosphere·Yasser VasseghianElena-Niculina Dragoi
Sep 10, 2020·Chemical Engineering Journal·Xiuru YangYong Sik Ok
Aug 14, 2020·The Science of the Total Environment·Renato Montenegro-AyoSergi Garcia-Segura
Jun 29, 2021·Critical Reviews in Microbiology·Siavash Iravani

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