Catalytic Activity of CuO-bentonite Bead for the   Removal of Methylene Blue by Fenton like Process 

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ABSTRACT

Non-biodegradable dyes, potentially contaminate the water and poses serious risk to the environment. So their removal requires alarming attention. The formation of CuO-bentonite bead and their dye removal application is the main focus of the current investigation. X-ray diffraction spectroscopy (XRD), Field emission scanning electron microscopy (FESEM), and Energy dispersive X-ray spectroscopy (EDS) analysis were implemented to evaluate the crystalline structure and morphology of the prepared sample. The catalytic activity of the CuO-bentonite bead was studied against the dye methylene blue (MB) by an advanced oxidation process like Fenton. The experimental data shows a maximum 94.08 % of the dye removal capacity of the beads in just 20 minutes. Further, for the detail dye removal study optimum environments such as initial MB concentration, pH range, and oxidant dosage were altered during the reaction. Additionally, the CuO-bentonite bead showed 89.03 % dye removal even after five reuse cycles; which exhibits the heightened stability and robustness of the CuO-bentonite bead as a catalyst. Therefore, this simply prepared CuO-bentonite bead revealed a new approach to wastewater treatment.

Significance of the study:

This paper presents the development of CuO-bentonite beads as an efficient and reusable catalyst for the removal of methylene blue dye from wastewater. The study highlights the beads’ high catalytic activity, stability, and reusability, making them a promising solution for industrial and environmental wastewater treatment.

Summary of the study:

The research details the synthesis and characterization of CuO-bentonite beads, confirmed through XRD, FESEM, and EDS analyses. These beads demonstrated a 94.08% methylene blue dye removal efficiency in 20 minutes via a Fenton-like process. The beads maintained an 89.03% removal rate over five reuse cycles, indicating their robustness and potential for sustainable wastewater treatment applications.