Natural catalysts for the Fenton-like oxidation of Orange II

N. INCHAURRONDO; A. MAESTRE; A. PINTAR; P. DJINOVIC; C. P. RAMOS; P. HAURE

Simposio; 3rd International Symposium on Catalysis for Clean Energy and Sustainable Chemistry - CCES 2016; 2016

The Fenton reaction has been successfully employed in the degradation of different industrial effluents at the lab scale. However, the development of an active, selective, stable and lowcost catalyst constitutes one of the main targetes towards the industrial implementation of this process. Following the green chemistry principles, recent studies have proposed the use of natural materials with minimal modification. The use of such inexpensive materials will optimize the process economics, compensating, for example the high cost of the oxidant. In this context, the general objective of this study is to evaluate the Fenton-like oxidation of an azo-compound, Orange II (OII), pollutant commonly present in textile wastwatwer, using catalysts of natural origin: volcanic ash, black sand and a natural aluminosilicate. These materials were mainly chosen because they have iron or iron oxides in their composition.