Polyvinyl alcohol/bentonite nanocomposite hydrogel (PVA- Ben) is an adsorbent for the removal of dye residues from wastewater. In this work, a new nanocomposite hydrogel with using poly vinyl alcohol and bentonite was fabricated by a new method, so-called colloidal gas aphrons (CGAs) system (APVA-Ben). CGAs is the name for certain microbubbles with a special structure that was introduced for the first time by Sebba. Characterization of these nanocomposites was accomplished by X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDS), and Fourier transform infrared (FTIR) spectroscopy. Then, these on (APVA-Ben) nanocomposites, including the effect of temperature (295-325 K), initial nanocomposites were used as adsorbent for the removal of methylene blue contaminant, as adsorbate, from aqueous phase. Optimization of the adsorption process of methylene blue the CGA-PVA-Ben has bonds, functional groups, and the same composition with the PVABen hydrogel. FE-SEM analysis confirms that the surface of the CGA-PVA-Ben has more dye concentration (10-300 mg.L-1), adsorbent dose (1-6 g.L-1) and pH (2-12) were performed. The results have also been compared to of a convential polyvinyl alcohol/ bentonite nanocomposite hydrogels (PVA- Ben). EDS, XRD and FT-IR analyzes show that followed by the second-order pseudo-model. The thermodynamic parameters of the color porosity and roughness. In order to investigate the kinetics of the reaction, the pseudo- firstorder, pseudo-second-order, and intra particle diffusion model were used. Both samples were adsorption process were also obtained, which showed spontaneous and endothermic natureof the process. Kinetic study of dye adsorption showed that the equilibrium between for PVA-Ben, it takes up to 120 minutes. adsorbent and MB occurs for CGA-PVA-Ben is rapid and completes up to 40 minutes, while