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Vol. 1 Núm. E (2024)
Segunda Jornada de Catálisis

Artículos de investigación / Research papers

Hidrodecloracion de diclofenaco usando nanoparticulas de hierro zerovalente ( nZVI) y nZVI soportado

https://doi.org/10.19053/uptc.01217488.v1.nE.2024.18360

Publicado 2024-11-15

  • Luna López
    • ,
  • Paula Ramírez
    • ,
  • María Helena Brijaldo

Luna López
Universidad Autónoma de Nuevo León

Paula Ramírez
Universidad Pedagógica y Tecnológica de Colombia

María Helena Brijaldo
Lab. Reatores

Resumen

El diclofenaco (DFC)  es bien conocido como un medicamento antiinflamatorio no esteroideo y su alta producción y consumo lo convierten en un contaminante emergente. El DFC  tiende a acumularse en sistemas acuáticos induciendo la toxicidad  a lo largo de la cadena alimenticia. Desarrollando  alternativas  para la eliminación de contaminantes emergentes  es uno de los desafíos más grandes de la química ambiental, de esta manera estamos investigación esta enfocada en la hidrodecloración (HDC) de diclofenaco (DFC) usando nanoparticulas de hiero zerovalente (nZVI) soportadas en alumina  (Al2O3) y carbon activado (AC). Los catalizadores se obtuvieron a partir de Fe(NO3)3.9H2O mediante dos métodos de reducción: extracto de pino variedad Ciprés (Cupressus sempervirens) y la segunda usando  NaBH4. Los catalizadores se caracterizaron mediante el estudio de las propiedades fisicoquímicas y morfológicas caracterizadas por las técnicas de difracción de rayos X (XRD), espectroscopia fotoelectrónica de rayos X (XPS), microscopía electrónica de transmisión (TEM) y espectroscopia Raman. Las pruebas de actividad catalítica se realizaron mediante reacciones DCF HDC con cada catalizador, monitoreando constantemente con la técnica de cromatografía líquida de alta resolución (HPLC). Los catalizadores nZVI-P/CA y nZVI-P/Al2O3 presentaron buena dispersión y actividad, con conversiones cercanas al 100%. El nZVI-P/CA mostró mayor selectividad hacia los productos deseados, mientras que el nZVI-P/Al2O3 fue más estable en el tiempo. Esta investigación aborda el riesgo ambiental de la bioacumulación de este tipo de compuestos organoclorados y propone una solución prometedora para su tratamiento.

 

Palabras clave

Diclofenac; 2-Anilinophenylacetate; Hydrodechlorination; Zerovalent iron; Nanoparticles.

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