SYNTHESIS, CHARACTERIZATION, AND ADSORPTION STUDIES OF A GRAPHENE OXIDE/POLYACRYLIC ACID NANOCOMPOSITE HYDROGEL

The AAc/GO nanocomposite hydrogel was successfully employed as a polymeric nano sorbent for the removal efficiency of M G dye from the model. The complication of the mechanism of the adsorption system was completely exposed by examining how solution pH affects adsorption, Ionic strength isotherm models, kinetic models, and thermodynamics. The adsorption of the MG dye was greatly dependent on the solution pH. The Freundlich model has been demonstrated to be the most accurate in describing the MG dye sorption, whilst the Langmuir model was shown to be the least accurate. Additionally, these integrated mechanisms fit nicely within the framework of a pseudo-second-order model. Additionally, the contact time at equilibrium short (ten minutes) required to MG removes demonstrates the AAc/GO nanocomposite hydrogel can be considered an efficient and potentially useful adsorbent for MG removal from industrial effluents.   Keyword: Adsorption, Dye, Isotherm, Hydrogel, Kinetic, Thermodynamic