Simultaneous Removal of Cationic Crystal Violet and Anionic Reactive Yellow Dyes using eco-friendly Chitosan Functionalized by Talc and Cloisite 30B

Abstract Designing adsorbent materials that can effectively remove many types of organic dyes is crucial because the wide diversity synthetic found in wastewater. Thus, this study presents synthesis economic and eco-friendly composites composed chitosan (Cs), talc (T), Cloisite 30B clay (C) to both cationic crystal violet (CV) anionic reactive yellow 145 (RY) for first time. Cs was functionalized with T subsequently CsTC1 CsTC2 were prepared by sensitizing obtained CsT different weight ratios (C). X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), N 2 adsorption–desorption isotherm, zeta potential employed characterize materials. The addition matrix improves thermal stability, pore size, volume respect pure Cs. effect C inclusion examined measuring affinity towards adsorption CV RY comparison composite. results a single dye solution revealed composite most effective removal 76.9 mg/g capacity, whereas exhibited highest activity (37.03 mg/g). Furthermore, co-adsorption on CsTC tested from mixed solution. kinetics followed pseudo second order model. Langmuir isotherm model described experimental data better than Freundlich, Dubinin–Radushkevich, Temkin models, indicating monolayer sorption process dyes. proposed mechanism using investigated.