Abstract
A large part of the wastewater generated by the Chemical and Transformation Industries are discharged with the presence of organic pollutants, in many cases they contain refractory organic compounds such as formaldehyde in a very low concentration for their recovery to be profitable, but it is high enough for to constitute a source of important pollution, which causes a loss of biodiversity and retards sustainable development. In the present work, the elimination of formaldehyde by the catalytic wet oxidation reaction is evaluated as part of the tertiary treatment of aqueous effluents in a three-phase reaction system, using copper and cobalt mixed oxides catalysts supported in alumina (alpha phase), the results of the characterization of the catalyst used are also shown, by conventional techniques.
Highlights
A large part of the wastewater generated by the chemical industry and the transformation are discharged with the presence of organic pollutants, in many cases contain refractory organic compounds such as formaldehyde in a very low concentration for their recovery to be profitable, but it is high enough to be a source of significant contamination [1]
The catalysts whose active phase is based on CeO2, are of great interest due to their applications in catalysis and since they can be the basis of different mixed oxides, the importance of cerium oxide is due to its ability to function as a buffer of storage of oxygen linked to the facility to transit between the oxidation states of Ce4+ to Ce3+, that is, of its redox properties [4]
The SEM/EDS and X-Ray Diffraction (XRD) of the samples, verify the presence of the metals that make up the mixed oxide on the alumina support
Summary
A large part of the wastewater generated by the chemical industry and the transformation are discharged with the presence of organic pollutants, in many cases contain refractory organic compounds such as formaldehyde in a very low concentration for their recovery to be profitable, but it is high enough to be a source of significant contamination [1]. Given this scenario, it is necessary to search for technologies that effectively treat this type of contaminated effluents and contribute to reducing the impact caused by a loss of biodiversity and delaying sustainable development [2]. The catalysts whose active phase is based on CeO2, are of great interest due to their applications in catalysis and since they can be the basis of different mixed oxides, the importance of cerium oxide is due to its ability to function as a buffer of storage of oxygen linked to the facility to transit between the oxidation states of Ce4+ to Ce3+, that is, of its redox properties [4]
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