EFFICIENT REMOVAL OF BEMACID YELLOW E-TL0 (BY E-TL01) USING LAYERED DOUBLE HYDROXIDES STRUCTURAL AND KINETICS STUDY

This study aims to investigate the adsorption of an azo textile dye, BEMACID YELLOW ETL0 (BY E-TL01), on the [Zn-Al-Cl] LDH matrix. The [Zn-Al-Cl] LDH was synthesized using the coprecipitation method at a constant pH and then employed for dye adsorption. The structural and morphological properties of the synthesized [Zn-Al-Cl] LDH were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA-DTG), and pH pzc determination. The study explored the effects of initial pH, contact time, and initial dye concentration on the adsorption of BY E-TL01 by [Zn-Al-Cl] LDH. Maximum adsorption capacity was achieved at pH values below 9. The adsorption kinetics followed the pseudo-second-order model. The process was found governed by Langmuir physisorption.