Assessment of full-scale tertiary wastewater treatment by UV-C based-AOPs: Removal or persistence of antibiotics and antibiotic resistance genes?
This research reports for the first time the full-scale application of different homogeneous Advanced Oxidation Processes (AOPs) (H2O2/UV-C, PMS/UV-C and PMS/Fe(II)/UV-C) for the removal of antibiotics (ABs) and antibiotic resistance genes (ARGs) from wastewater effluent at Estiviel wastewater treatment plant (WWTP) (Toledo, Spain). AOPs based on the photolytic decomposition of H2O2 and peroxymonosulfate tested at low dosages (0.05–0.5 mM) and with very low UV-C contact time (4–18 s) demonstrated to be more efficient than UV-C radiation alone on the removal of the analyzed ABs. PMS (0.5 mM) combined with UV-C (7 s contact time) was the most efficient treatment in terms of AB removal: 7 out of 10 ABs detected in the wastewater were removed more efficiently than using the other oxidants. In terms of ARGs removal efficiency, UV-C alone seemed the most efficient treatment, although H2O2/UV-C, PMS/UV-C and PMS/Fe(II)/UV-C were supposed to generate higher concentrations of free radicals. The results show that treatments with the highest removal of ABs and ARGs did not coincide, which could be attributed to the competition between DNA and oxidants in the absorption of UV photons, reducing the direct photolysis of the DNA. Whereas the photolytic ABs removal is improved by the generation of hydroxyl and sulfate radicals, the opposite behavior occurs in the case of ARGs. These results suggest that a compromise between ABs and ARGs removal must be achieved in order to optimize wastewater treatment processes. © 2018 Elsevier B.V.
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Format: | artículo biblioteca |
Language: | English |
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Elsevier
2019-02-20
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Subjects: | Antibiotics, Full-scale, WWTP, Resistance genes, Sulfate radicals, UV-C radiation, |
Online Access: | http://hdl.handle.net/10261/202936 http://dx.doi.org/10.13039/501100003329 |
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dig-idaea-es-10261-2029362021-02-20T05:31:34Z Assessment of full-scale tertiary wastewater treatment by UV-C based-AOPs: Removal or persistence of antibiotics and antibiotic resistance genes? Rodríguez-Chueca, Jorge Varella Della Giustina, Saulo Rocha, Jaqueline Fernandes, Telma Pablos Carro, Cristina Encinas, Ángel Barceló, Damià Rodríguez-Mozaz, Sara Manaia, Célia M. Marugán, Javier Ministerio de Economía y Competitividad (España) Barceló, Damià [0000-0002-8873-0491] Antibiotics Full-scale WWTP Resistance genes Sulfate radicals UV-C radiation This research reports for the first time the full-scale application of different homogeneous Advanced Oxidation Processes (AOPs) (H2O2/UV-C, PMS/UV-C and PMS/Fe(II)/UV-C) for the removal of antibiotics (ABs) and antibiotic resistance genes (ARGs) from wastewater effluent at Estiviel wastewater treatment plant (WWTP) (Toledo, Spain). AOPs based on the photolytic decomposition of H2O2 and peroxymonosulfate tested at low dosages (0.05–0.5 mM) and with very low UV-C contact time (4–18 s) demonstrated to be more efficient than UV-C radiation alone on the removal of the analyzed ABs. PMS (0.5 mM) combined with UV-C (7 s contact time) was the most efficient treatment in terms of AB removal: 7 out of 10 ABs detected in the wastewater were removed more efficiently than using the other oxidants. In terms of ARGs removal efficiency, UV-C alone seemed the most efficient treatment, although H2O2/UV-C, PMS/UV-C and PMS/Fe(II)/UV-C were supposed to generate higher concentrations of free radicals. The results show that treatments with the highest removal of ABs and ARGs did not coincide, which could be attributed to the competition between DNA and oxidants in the absorption of UV photons, reducing the direct photolysis of the DNA. Whereas the photolytic ABs removal is improved by the generation of hydroxyl and sulfate radicals, the opposite behavior occurs in the case of ARGs. These results suggest that a compromise between ABs and ARGs removal must be achieved in order to optimize wastewater treatment processes. © 2018 Elsevier B.V. The authors gratefully acknowledge the financial support of the Spanish Ministry of Economy and Competitiveness (MINECO) and the Centre for the Development of Industrial Technology (CDTI) in the frame of the collaborative international projects WATERJPI2013 – MOTREM and STARE of the Water Challenges for a Changing World Joint Programming Initiative (Water JPI) Pilot Call, as well as the “Redes de Excelencia 2015” program FOTOCAT (CTM2015-71054-REDT). The authors also gratefully acknowledge the financial support Fundação para a Ciência e a Tecnologia through the WaterJPI/0001/2013 project STARE – “Stopping Antibiotic Resistance Evolution” and thank the scientific collaboration under the FCT project UID/Multi/50016/2013. Jorge Rodríguez-Chueca and Sara Rodriguez-Mozaz acknowledge also the funding provided by the Spanish Ministry of Economy and Competitiveness (MINECO) through the Juan de la Cierva-formación grant (No. FJCI-2014-20195) and Ramon y Cajal Program (RYC-2014-16707) respectively. Jaqueline Rocha was funded by the International PhD Programme in Biotechnology – BIOTECH.DOC, NORTE-08-5369-FSE-000007. Peer reviewed 2020-03-06T07:09:43Z 2020-03-06T07:09:43Z 2019-02-20 artículo http://purl.org/coar/resource_type/c_6501 Science of the Total Environment 652: 1051-1061 (2019) http://hdl.handle.net/10261/202936 10.1016/j.scitotenv.2018.10.223 http://dx.doi.org/10.13039/501100003329 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2015-71054-REDT Postprint https://doi.org/10.1016/j.scitotenv.2018.10.223 Sí open Elsevier |
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Antibiotics Full-scale WWTP Resistance genes Sulfate radicals UV-C radiation Antibiotics Full-scale WWTP Resistance genes Sulfate radicals UV-C radiation |
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Antibiotics Full-scale WWTP Resistance genes Sulfate radicals UV-C radiation Antibiotics Full-scale WWTP Resistance genes Sulfate radicals UV-C radiation Rodríguez-Chueca, Jorge Varella Della Giustina, Saulo Rocha, Jaqueline Fernandes, Telma Pablos Carro, Cristina Encinas, Ángel Barceló, Damià Rodríguez-Mozaz, Sara Manaia, Célia M. Marugán, Javier Assessment of full-scale tertiary wastewater treatment by UV-C based-AOPs: Removal or persistence of antibiotics and antibiotic resistance genes? |
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This research reports for the first time the full-scale application of different homogeneous Advanced Oxidation Processes (AOPs) (H2O2/UV-C, PMS/UV-C and PMS/Fe(II)/UV-C) for the removal of antibiotics (ABs) and antibiotic resistance genes (ARGs) from wastewater effluent at Estiviel wastewater treatment plant (WWTP) (Toledo, Spain). AOPs based on the photolytic decomposition of H2O2 and peroxymonosulfate tested at low dosages (0.05–0.5 mM) and with very low UV-C contact time (4–18 s) demonstrated to be more efficient than UV-C radiation alone on the removal of the analyzed ABs. PMS (0.5 mM) combined with UV-C (7 s contact time) was the most efficient treatment in terms of AB removal: 7 out of 10 ABs detected in the wastewater were removed more efficiently than using the other oxidants. In terms of ARGs removal efficiency, UV-C alone seemed the most efficient treatment, although H2O2/UV-C, PMS/UV-C and PMS/Fe(II)/UV-C were supposed to generate higher concentrations of free radicals. The results show that treatments with the highest removal of ABs and ARGs did not coincide, which could be attributed to the competition between DNA and oxidants in the absorption of UV photons, reducing the direct photolysis of the DNA. Whereas the photolytic ABs removal is improved by the generation of hydroxyl and sulfate radicals, the opposite behavior occurs in the case of ARGs. These results suggest that a compromise between ABs and ARGs removal must be achieved in order to optimize wastewater treatment processes. © 2018 Elsevier B.V. |
author2 |
Ministerio de Economía y Competitividad (España) |
author_facet |
Ministerio de Economía y Competitividad (España) Rodríguez-Chueca, Jorge Varella Della Giustina, Saulo Rocha, Jaqueline Fernandes, Telma Pablos Carro, Cristina Encinas, Ángel Barceló, Damià Rodríguez-Mozaz, Sara Manaia, Célia M. Marugán, Javier |
format |
artículo |
topic_facet |
Antibiotics Full-scale WWTP Resistance genes Sulfate radicals UV-C radiation |
author |
Rodríguez-Chueca, Jorge Varella Della Giustina, Saulo Rocha, Jaqueline Fernandes, Telma Pablos Carro, Cristina Encinas, Ángel Barceló, Damià Rodríguez-Mozaz, Sara Manaia, Célia M. Marugán, Javier |
author_sort |
Rodríguez-Chueca, Jorge |
title |
Assessment of full-scale tertiary wastewater treatment by UV-C based-AOPs: Removal or persistence of antibiotics and antibiotic resistance genes? |
title_short |
Assessment of full-scale tertiary wastewater treatment by UV-C based-AOPs: Removal or persistence of antibiotics and antibiotic resistance genes? |
title_full |
Assessment of full-scale tertiary wastewater treatment by UV-C based-AOPs: Removal or persistence of antibiotics and antibiotic resistance genes? |
title_fullStr |
Assessment of full-scale tertiary wastewater treatment by UV-C based-AOPs: Removal or persistence of antibiotics and antibiotic resistance genes? |
title_full_unstemmed |
Assessment of full-scale tertiary wastewater treatment by UV-C based-AOPs: Removal or persistence of antibiotics and antibiotic resistance genes? |
title_sort |
assessment of full-scale tertiary wastewater treatment by uv-c based-aops: removal or persistence of antibiotics and antibiotic resistance genes? |
publisher |
Elsevier |
publishDate |
2019-02-20 |
url |
http://hdl.handle.net/10261/202936 http://dx.doi.org/10.13039/501100003329 |
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