Novel Ti/RuO2IrO2 anode to reduce the dangerousness of antibiotic polluted urines by Fenton-based processes
| Autor: | Angela Moratalla, Isabelle M.D. Gonzaga, Pablo Cañizares, Giancarlo R. Salazar-Banda, Manuel A. Rodrigo, Cristina Sáez, Katlin I.B. Eguiluz |
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| Rok vydání: | 2021 |
| Předmět: |
inorganic chemicals
Environmental Engineering medicine.drug_class Health Toxicology and Mutagenesis 0208 environmental biotechnology Antibiotics 02 engineering and technology Actividad antimicrobiana 010501 environmental sciences Ti / RuO 2 IrO 2 01 natural sciences Enterococcus faecalis Óxidos metálicos mixtos Fenton oxidation medicine Environmental Chemistry 0105 earth and related environmental sciences biology Chemistry Public Health Environmental and Occupational Health General Medicine General Chemistry Contamination Toxicidad biology.organism_classification Orina Pollution 020801 environmental engineering Anode Penicilina G Ingeniería Química Wastewater Ecotoxicity Nuclear chemistry |
| Zdroj: | RUIdeRA. Repositorio Institucional de la UCLM instname |
| Popis: | The treatment of hospital wastewater is very complex, so treating polluted human urine is a significant challenge. Here, we tested a novel MMO-Ti/RuO2IrO2 electrode to reduce the ecotoxicity risk of hospital urines contaminated with antibiotics. This electrode was used as the anode in electro-Fenton (EF) and photoelectro-Fenton (PhEF) processes. The results were compared with those obtained using the boron-doped diamond (BDD) anode, as well as those obtained by a conventional Fenton oxidation. In order to analyze the performance of the processes, the treatments were evaluated on the subject of Penicilin G (PenG) removal, toxicity (using a standardized method with Vibrio Fisheri), and antibiotic activity (Enterococcus faecalis as the target bacterium). The results reveal that PenG degrades in the following order: Fenton < EF < PhEF. The best results are found for the MMO-PhEF, which completely removed PenG, decreased 96% of toxicity, and completely removed antibiotic activity. Besides, for comparison, tests were performed with BDD, and results point out the higher convenience of the new electrode in terms of acceptable use of energy because the effluents generated can be further degraded in an urban wastewater treatment plant. Because of that, MMO-RuO2-IrO2 emerges as a promising cost-effective material for the pre-treatment of hospital urine effluents. El tratamiento de las aguas residuales hospitalarias es muy complejo, por lo que tratar la orina humana contaminada es un desafío importante. Aquí, probamos un nuevo electrodo MMO-Ti / RuO 2 IrO 2 para reducir el riesgo de ecotoxicidad de la orina de hospital contaminada con antibióticos. Este electrodo se utilizó como ánodo en los procesos electro-Fenton (EF) y fotoelectro-Fenton (PhEF). Los resultados se compararon con los obtenidos utilizando el ánodo de diamante dopado con boro (BDD), así como con los obtenidos mediante una oxidación Fenton convencional. Para analizar el desempeño de los procesos, se evaluaron los tratamientos en materia de remoción de Penicilina G (PenG), toxicidad (usando un método estandarizado con Vibrio Fisheri ) y actividad antibiótica ( Enterococcus faecalis).como la bacteria diana). Los resultados revelan que PenG se degrada en el siguiente orden: Fenton |
| Databáze: | OpenAIRE |
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