Degradation of antibiotic amoxicillin from pharmaceutical industry wastewater into a continuous flow reactor using supercritical water gasification

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dc.creatorDias, Isabela Milhomem
dc.creatorMourão, Lucas Clementino
dc.creatorAndrade, Laiane Alves de
dc.creatorSouza, Guilherme Botelho Meireles de
dc.creatorViana, Julio Cezar Vieira
dc.creatorOliveira, Sérgio Botelho de
dc.creatorAlonso, Christian Gonçalves
dc.date.accessioned2023-09-06T10:45:44Z
dc.date.available2023-09-06T10:45:44Z
dc.date.issued2023
dc.description.abstractIn recent years the concern with emerging pollutants in water has become more prominent, especially pharmaceutical residues, such as antibiotics due to the influence to increase antibacterial resistance. Further, conventional wastewater treatment methods have not demonstrated efficiency for the complete degradation of these compounds, or they have limitations to treat a large volume of waste. In this sense, this study aims to investigate the degradation of amoxicillin, one of the most prescribed antibiotics, in wastewater via supercritical water gasification (SCWG) using a continuous flow reactor. For this purpose, the process operating conditions of temperature, feed flow rate, and concentration of H2O2 was evaluated using Experimental Design and Response Surface Methodology techniques and optimized by Differential Evolution methodology. Total organic carbon (TOC) removal, chemical oxygen demand (COD) degradability, reaction time, amoxicillin degradation rate, toxicity of degradation by-products, and gaseous products were evaluated. The use of SCWG for treatment achieved 78.4% of the TOC removal for the industrial wastewater. In the gaseous products, hydrogen was the majority component. Furthermore, high-performance liquid chromatography analyses demonstrated that the antibiotic amoxicillin was degraded. For a mass flow rate of 15 mg/min of amoxicillin fed into the reaction system, 14.4 mg/min was degraded. Toxicity tests with microcrustacean Artemia salina showed slight toxicity to treated wastewater. Despite that, the outcomes reveal the SCWG has great potential to degrade amoxicillin and may be applied to treat several pharmaceutical pollutants. Aside from this, carbon-rich effluents may lead to a significant energy gaseous product, especially, hydrogen and syngas.pt_BR
dc.identifier.citationDIAS, Isabela M. et al. Degradation of antibiotic amoxicillin from pharmaceutical industry wastewater into a continuous flow reactor using supercritical water gasification. Water Research, Oxford, v. 234, e119826, 2023. DOI: 10.1016/j.watres.2023.119826. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0043135423002610?via%3Dihub. Acesso em: 29 ago. 2023.pt_BR
dc.identifier.doi10.1016/j.watres.2023.119826
dc.identifier.issne- 1879-2448
dc.identifier.issn0043-1354
dc.identifier.urihttps://www.sciencedirect.com/science/article/abs/pii/S0043135423002610?via%3Dihub
dc.language.isoengpt_BR
dc.publisher.countryGra-bretanhapt_BR
dc.publisher.departmentInstituto de Química - IQ (RMG)pt_BR
dc.rightsAcesso Restritopt_BR
dc.titleDegradation of antibiotic amoxicillin from pharmaceutical industry wastewater into a continuous flow reactor using supercritical water gasificationpt_BR
dc.typeArtigopt_BR

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