Elimination du bleu de méthylène par bioadsorption et processus Fenton à base de Nif e2O4/ CuO

Abstract

This thesis focuses on the synthesis of novel materials suitable for water treatment using two distinct methods: adsorption and Fenton. The adsorption treatment was initially tested using two novel absorbents, Acorus calamus and Cynara scolymus. These absorbents were first treated with sulfuric acid and then activated with potassium permanganate in the case of Acorus calamus. For Cynara scolymus, it was used directly in powder form to prepare the adsorbents. The produced materials were thoroughly characterized using several techniques, including XRD, FTIR, TGA, and SEM. In addition, the study focused on applying the acquired materials as adsorbents in a batch system to remove the basic dye, methylene blue (MB). The study investigated the kinetics of adsorption, equilibrium behavior, and the impact of several parameters, including pH, contact time, initial concentration, ionic strength, and temperature. Consequently, we achieved high levels of adsorption capacity. Furthermore, Fenton's processes demonstrate the efficacy of a novel nanomaterial, NiFe2O4-CuO, in water treatment. Specifically, it is confirmed that this nanomaterial serves as an effective activator for H2O2.