INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Modified diatomites for the Fenton-like oxidation of phenol
Autor/es:
N. INCHAURRONDO; J. FONT; P. HAURE
Lugar:
Belo Horizonte
Reunión:
Encuentro; 1. VIII EPOA-Meeting of Environmental Applications of Advanced Oxidation Processes,; 2015
Resumen:
The peroxidation of phenol solutions (1000 mg/L) was studied in a laboratory batch reactor at 60 and 70ºC, using three modified commercial grade diatomites: Raw-calcined (RD), Fe-diatom (Fe-D) and Cu/Fe-diatom (Cu/Fe-D). Impregnated catalysts were prepared by the incipient wetness impregnation method (IWI). All samples were calcined at 700ºC, then characterized and tested in phenol peroxidation at pH = 6 with a load equivalent to 100 mg/L of Fe or Cu and a H2O2 dose 1.3 times the stoichiometric. For all iron catalyst samples, phenol was completely converted in less than 180 min, at 70ºC, with a TOC reduction of 50-54 %. Added Fe had a negligible effect on performance. Higher TOC conversions (80%) were achieved with the Cu/Fe-D sample, however Cu leaching is excessive.