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Aplicación del proceso Fenton al tratamiento de aguas oleosas

Authors: Munoz, Macarena; Domínguez, Carmen M.; Díaz de Tuesta, Jose Luis; Gomes, Helder; Casas, Jose A.;

Aplicación del proceso Fenton al tratamiento de aguas oleosas

Abstract

En este trabajo se explora la viabilidad de procesos tipo Fenton, homogéneo y heterogéneo, para el tratamiento de contaminantes lipofílicos contenidos en aguas oleosas. Se ha seleccionado el colorante Sudán IV como contaminante modelo y el ciclohexano como fase oleosa. Atendiendo al distinto coeficiente de reparto en el sistema bifásico agua-ciclohexano, se han seleccionado cuatro catalizadores basados en hierro; dos compuestos de hierro homogéneos: una sal soluble en la fase acuosa y un complejo soluble en la fase orgánica, y dos catalizadores heterogéneos: hierro soportado en carbón activo (localizado preferentemente en la fase orgánica) y magnetita natural (con afinidad por ambas fases y principalmente concentrado en la interfase). El estudio preliminar de los cuatro catalizadores en la descomposición de H2O2 (en ausencia de contaminante) reveló que los catalizadores homogéneos son más activos y, por tanto, presentan mayor potencial para ser utilizados en sistemas bifásicos. En presencia de estos materiales (10 mg L-1) se consiguen conversiones de contaminante superiores al 50% a las 24 h de reacción, trabajando con la cantidad estequiométrica de oxidante. Los resultados obtenidos son prometedores y abren la puerta a la síntesis y aplicación de nuevos catalizadores homogéneos adecuados para este tipo de sistemas.

Country
Portugal
Related Organizations
Keywords

Águas residuales oleosas, Sudán IV, SIstema bifásico, Proceso Fenton, Contaminante lipofílico

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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