Modelo estadístico de la descontaminación de aguas residuales que contienen Carbendazim mediante foto-Fenton

Statistical modeling of decontamination of wastewater containing Carbendazim using photo-Fenton

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La fotocatálisis homogénea foto-Fenton es uno de los procesos de oxidación avanzada más utilizados en el tratamiento de aguas residuales con contenido de pesticidas, donde la optimización de la dosis de catalizador y el agente oxidante, teniendo como respuesta la mineralización en términos de carbón orgánico total (COT) o la eliminación del contaminante específico, son el objetivo de cualquier diseño experimental. El desarrollo experimental en los procesos de tratamiento requiere la ejecución de una cantidad significativa de condiciones experimentales que necesitan el uso de reactivos, energía y tiempo de ejecución, por lo tanto, el modelamiento de este tipo de fenómenos surge como una alternativa a esta limitante en los tratamientos de aguas residuales. En esta investigación, se evaluó la influencia de los factores FeSO4 y H2O2, cada uno en tres niveles, en la mineralización de una solución sintética del insecticida Carbendazim (50 mg.L-1), en términos de COT, mediante un modelo de regresión lineal múltiple y optimizado por una superficie de respuesta. Los principales resultados establecieron que el mejor ajuste del modelo se da teniendo en cuenta la interacción entre el FeSO4 y el H2O2 (X1*X2) y los términos cuadráticos de cada una de ellas (X21,X22)   con p-values <0,05 y que la validación del modelo, mediante la técnica Leave-One-Out Cross Validation (LOOCV), así como la exactitud y la precisión, mediante el análisis de residuos y el supuesto de mínimos cuadrados ordinarios, establecen que las conclusiones que se deriven de él son válidas

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