Fotocatálisis tipo Fenton con Mn (II) en agua residual.
Palabras clave:
degradación, foto-Fenton, Manganeso, Agua residualResumen
El proceso Foto-Fenton es una alternativa prometedora para la eliminación de contaminantes orgánicos en agua residual, no obstante, está limitado a un pH de trabajo de 3-4. Por ello, se han estudiado metales de transición como el Mn que no limiten el desempeño del proceso. El objetivo del presente trabajo consistió en evaluar el proceso foto-Fenton con Mn (II) para la degradación de contaminantes en agua residual. Se realizaron ensayos Mn (10 - 100 mg L-1) y H2O2 (150 - 600 mg L-1) con relaciones Fe/Mn de 0.2, 0.5, 0.7 y 1, y agua residual al 10, 20, 40, 60, 80 y 100 %. Se logró eliminar la mayor cantidad de contaminantes del agua residual en ensayos con 50 mg L-1 de Mn2+ y 600 mg L-1 de H2O2. En los ensayos con Fe/Mn igual a 0.7, se obtuvieron las mayores degradaciones de contaminantes. El ion Mn2+ actuó como co-catalizador en el sistema foto-Fenton, mejorando el mecanismo clásico con Fe2+.
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Derechos de autor 2025 Ivon Claudia Plata, Claudia Romo Gómez, César Camacho-López, Otilio Arturo Acevedo Sandoval, Cesar Abelardo González Ramírez, Fernando Salas Martinez

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