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Degradation of Oxytetracycline in Aqueous Solutions: Application of Homogeneous and Heterogeneous Advanced Oxidative Processes

2020-10-23Journal article Open access
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datacite.subject.fosCiências Sociais::Geografia Económica e Social
datacite.subject.fosCiências Naturais::Ciências da Terra e do Ambiente
datacite.subject.fosCiências Naturais::Ciências da Computação e da Informação
datacite.subject.sdg06:Água Potável e Saneamento
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
datacite.subject.sdg13:Ação Climática
dc.contributor.authorGiler-Molina, José Miguel
dc.contributor.authorZambrano-Intriago, Luis Angel
dc.contributor.authorQuiroz-Fernández, Luis Santiago
dc.contributor.authorNapoleão, Daniella Carla
dc.contributor.authorVieira, Judite dos Santos
dc.contributor.authorOliveira, Nelson Simões
dc.contributor.authorRodríguez-Díaz, Joan Manuel
dc.date.accessioned2025-07-23T15:48:18Z
dc.date.available2025-07-23T15:48:18Z
dc.date.issued2020-10-23
dc.descriptionArticle number - 8807
dc.description.abstractOxytetracycline is one of the antibiotics most frequently used in the Shrimp Industry during the control of bacterial diseases. These emerging pollutants, which appear in low concentrations, are persistent and alternative treatments and are required for their elimination. The degradation of oxytetracycline was evaluated in an aqueous solution by applying homogeneous (UV/H2O2 and photo-Fenton) and heterogeneous (UV/TiO2 /H2O2) advanced oxidative processes (AOPs). The studies were carried out using a bench reactor with short-wave ultraviolet lamps (UV-C). We quantified the extent to which the degradation of the drug had been efficient by employing highly efficient liquid chromatography (HPLC) and a PDA detector with a wavelength of 354 nm and a C18 column. The best results were obtained when applying the UV/H2O2 treatment, which attained a degradation of 97% under the initial conditions of a dose of 8 µL of H2O2 and 120 min of radiation. The pseudo-first order kinetic model proposed by Chan and Chu showed that the experimental results had an adequate fit, with values greater than R2 ≥ 0.95. Toxicity tests were applied to verify the effect of AOPs employed, when the drug was present in low concentrations. The test results demonstrated a decrease in the root growth of the species Lactuca sativa and Daucus carota.eng
dc.description.sponsorshipFunding: The authors would like to thank the Ecuadorian National Secretary for Higher Education, Science and Technology (SENESCYT—in Spanish), the Universidad Técnica de Manabí and the Instituto Politécnico de Leiria for the financial support provided to carry out this work. Acknowledgments: The authors are very grateful to the Chemistry and Biotechnology Analysis Laboratory at the Universidad Técnica de Manabí and to the Espectrocrom Company, particularly Edmundo Regalado, engineer.
dc.identifier.citationGiler-Molina, J. M., Zambrano-Intriago, L. A., Quiroz-Fernández, L. S., Napoleão, D. C., dos Santos Vieira, J., Simões Oliveira, N., & Rodríguez-Díaz, J. M. (2020). Degradation of Oxytetracycline in Aqueous Solutions: Application of Homogeneous and Heterogeneous Advanced Oxidative Processes. Sustainability, 12(21), 8807. https://doi.org/10.3390/su12218807.
dc.identifier.doi10.3390/su12218807
dc.identifier.issn2071-1050
dc.identifier.urihttp://hdl.handle.net/10400.8/13763
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relation.hasversionhttps://www.mdpi.com/2071-1050/12/21/8807
dc.relation.ispartofSustainability
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectantibiotic
dc.subjectdegradation
dc.subjectemerging pollutants
dc.subjectkinetic model
dc.subjecttoxicity
dc.titleDegradation of Oxytetracycline in Aqueous Solutions: Application of Homogeneous and Heterogeneous Advanced Oxidative Processeseng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage19
oaire.citation.issue21
oaire.citation.startPage1
oaire.citation.titleSustainability
oaire.citation.volume12
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNamevieira
person.familyNameOliveira
person.givenNamejudite
person.givenNameNelson
person.identifier.ciencia-idEA1B-12E3-7703
person.identifier.ciencia-idCB18-B848-4389
person.identifier.orcid0000-0001-7982-5686
person.identifier.orcid0000-0001-9451-2485
person.identifier.ridH-5018-2017
person.identifier.scopus-author-id36869854300
person.identifier.scopus-author-id7005130374
relation.isAuthorOfPublication72df3193-dd37-46a1-bca3-fca816008bf1
relation.isAuthorOfPublication2b2a0872-ca17-4f98-a85d-8dbdb6a04a8a
relation.isAuthorOfPublication.latestForDiscovery72df3193-dd37-46a1-bca3-fca816008bf1

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Oxytetracycline is one of the antibiotics most frequently used in the Shrimp Industry during the control of bacterial diseases. These emerging pollutants, which appear in low concentrations, are persistent and alternative treatments and are required for their elimination. The degradation of oxytetracycline was evaluated in an aqueous solution by applying homogeneous (UV/H2O2 and photo-Fenton) and heterogeneous (UV/TiO2 /H2O2) advanced oxidative processes (AOPs). The studies were carried out using a bench reactor with short-wave ultraviolet lamps (UV-C). We quantified the extent to which the degradation of the drug had been efficient by employing highly efficient liquid chromatography (HPLC) and a PDA detector with a wavelength of 354 nm and a C18 column. The best results were obtained when applying the UV/H2O2 treatment, which attained a degradation of 97% under the initial conditions of a dose of 8 µL of H2O2 and 120 min of radiation. The pseudo-first order kinetic model proposed by Chan and Chu showed that the experimental results had an adequate fit, with values greater than R2 ≥ 0.95. Toxicity tests were applied to verify the effect of AOPs employed, when the drug was present in low concentrations. The test results demonstrated a decrease in the root growth of the species Lactuca sativa and Daucus carota.
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