Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)Moncayo Lasso, AlejandroMartínez Pachón, DianaGonzález Cogua, Natalia Rocío2023-05-082023-05-082022-12-13http://repositorio.uan.edu.co/handle/123456789/8003Pharmaceutically active compounds correspond to a type of pollutants that are currently detected with great frequency in the aquatic environment. Antibiotics specifically represent an additional risk by contributing to the emergence of resistant bacteria. In this work, the efficiency of an electrochemically assisted UV/H2O2/Cl2 system in a flow cell with a dimensionally stable anode and a gas diffusion cathode, under UV radiation (light emitting diode) in the degradation of Sulfamethoxazole, is studied. an antibiotic frequently consumed and detected in surface, waste, hospital and irrigation waters. The influence of parameters such as current density on the production of oxidants and the degradation of Sulfamethoxazole was evaluated. The results show a total degradation of the compound after two minutes of treatment with a maximum mineralization of 35% in thirty minutes. Calculations of energy consumption are made, observing a better efficiency with 75mA/cm2 (0.039kWh/L) compared to 150mA/cm2 (0.060kWh/L). Finally, the possible degradation products obtained by UHPLC/ESI-tqMS were followed up, for which their chemical structures and possible oxidation mechanisms with the reactive and electro-generated species in the system are proposed.Los compuestos farmacéuticamente activos corresponden a un tipo de contaminantes que en la actualidad son detectados con gran frecuencia en el medio acuático. Específicamente los antibióticos representan un riesgo adicional al contribuir con la aparición de bacterias resistentes. En este trabajo se estudia la eficiencia de un sistema UV/H2O2/Cl2 asistido electroquímicamente en celda de flujo con un ánodo dimensionalmente estable y un cátodo de difusión de gas, bajo radiación UV (luz de emisión de diodos) en la degradación de Sulfametoxazol, un antibiótico frecuentemente consumido y detectado en aguas superficiales, residuales, hospitalarias y de riego. Se evaluó la influencia de parámetros como la densidad de corriente en la producción de oxidantes y la degradación de Sulfametoxazol. Los resultados muestran una degradación total del compuesto después de dos minutos de tratamiento con una mineralización máxima de 35% en treinta minutos. Se realizaron cálculos del consumo energético observándose una mejor eficiencia con 7,5mA/cm2 (0.039kWh/L) respecto a 150mA/cm2 (0.060kWh/L). Por último, se realizó el seguimiento a los posibles productos de degradación obtenidos mediante UHPLC/ESI-tqMS para los cuales se proponen sus estructuras químicas y posibles mecanismos de oxidación con las especies reactivas electro-generadas en el sistema.spaAcceso abiertoProceso Avanzado de OxidaciónProductos de DegradaciónUV/Peróxido de Hidrógeno/CloroElectroquímicamente AsistidoSulfametoxazol.Trabajo de grado (Pregrado y/o Especialización)Advanced Oxidation Process, Degradation Products, UV/Hydrogen Peroxide/Chlorine, Electrochemically Assisted, Sulfamethoxazole.info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Anayamthatta Rayaroth, M., Aravindakumar, C. T., Shah, N. S., & Boczkaj, G. (2022). Advanced oxidation processes (AOPs) based wastewater treatment - unexpected nitration side reactions - a serious environmental issue: A review. CHEMICAL ENGINEERING JOURNAL, 430, 133002. https://doi.org/10.1016/j.cej.2021.133002Adil, S., Maryam, B., Kim, E. 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