Elaboration and properties of a new SDS/CTAB@Montmorillonite organoclay composite as a superb adsorbent for the removal of malachite green from aqueous solutions

In this study, the SDS/[email protected] composite as a novel adsorbent has been prepared via facile synergistic effect of cationic surfactant (CTAB) and anionic (SDS) for modification montmorillonite, it was utilized to remove malachite green (MG) from aqueous solutions. The structure morphology were characterized by X-ray diffraction (XRD), Fourier Transform Infra-Red (FT-IR) spectroscopy, Scanning Electron Microscopy (SEM), Transmission (TEM), Energy Dispersive Analysis X?rays (EDAX), N2 adsorption/desorption isotherms (BET method). found be highly negatively surface charged, showed good adsorption properties MG molecules, reaching maximum dye adsorbed amount 1021.45 mg/g. Further, at equilibrium, experimental in agreement with theoretical predicted data Langmuir model (R2 = 0.99), indicating that molecules homogenously formed monolayer on surface. Moreover, kinetics well fitted pseudo-second-order 0.99). From temperature thermodynamic parameters, such G, ?H ?S assessed, their values revealed reaction spontaneous, exothermic resulted decrease randomness Finally, new mechanism proposed confirmed water onto hydrophobic hydrophilic interactions.