Preparation of Material from Red Mud Impregnated with Fe (III) and application in Advanced Oxidative Processes

Abstract

Abstract:In this work, we prepared a material based on natural red mud subjected to the neutralization process with CO 2 and enriched with Fe. The catalytic activity of the materials was evaluated based on the hydrogen peroxide decomposition test and the adsorption and oxidation reactions of the organic compound model methylene blue (MB). According to the results, it was observed that the material enriched with Fe was more active compared to the precursor material. The material showed potential to be used as a catalyst. Researches involving the application of waste processes contribute directly to minimizing the impacts caused by its disposal, and at the same time leads to the production of materials with added value.

Kinetic Study of Methyl Orange Azo Dye Discoloration by Fenton Processes in the Presence of Di-hydroxybenzenes and Gallic Acid

“…Dentre as técnicas alternativas para a degradação de corantes, presentes comumente em efluentes têxteis, têm-se destacado os processos oxidativos avançados (POAs) baseados na reação de Fenton. [1][2][3][4] Essa reação consiste na degradação catalítica de peróxido de hidrogênio por íons ferrosos com consequente formação in situ de radicais hidroxila (HO • ), os quais são capazes de degradar diferentes compostos orgânicos a moléculas mais simples como CO2, H2O e íons inorgânicos. 3,[5][6][7] Tal reação é comumente chamada de reação de Fenton clássica (Equação 1).…”