Adsorption of Aniline from Aqueous Samples by Ionic liquidModified Cobalt Ferrite Graphene Oxide Nanocomposite

The modified Cobalt Ferrite graphene oxide nanocomposite, CoFe2O4/Go/IL, was used for the removal of aniline from aqueous samples. The mean size and the surface morphology of the nanoparticles were characterized by TEM, XRD and FTIR techniques. Adsorption study was performed under different experimental conditions. Adsorption of aniline onto CoFe2O4/Go/IL nanocomposite wasaffected by the initial pH, dye concentration, adsorbent amount, contact time and temperature. The maximum adsorption capacity of CoFe2O4/Go/IL was 336.6 mg of aniline per gram of nanoparticles. The isotherm evaluation suggested that Dubinin-Radushkevich model attained better consistency with equilibrium data compared with Freundlich model. The adsorption process was exothermic. Theenthalpy change (ΔH0) and entropy change (ΔS0 were determined −13.85 kJ mol−1 and −28.71 J mol−1K−1, respectively. Furthermore, adsorption process follow to pseudo-second-order kinetic model

Keywords:

Nanocomposite , Aniline , Adsorption