Nio @ Paraffin Wax Soot Carbon Nano Composites for Congo Red Dye Removal from Waste Water

Nickel oxide activated carbon nanocomposites (NiO-CNC), synthesized using the carbon soot of paraffin wax by a simple combustion method and tested as an adsorbent for the removal of hazardous Congo red dye (CR) in aqueous phase is presented in this work. The adsorption studies have been investigated thoroughly and elucidated with the impact of important parameters, pH of the dye solution, initial dye concentration, contact time and sorbent dose, which were found to be 11, 200 ppm, 60 min., and 0.035 g/L, respectively. Sorption kinetics and isotherm modeling were studied and checked for their applicability with dye sorption system using synthesized NiO-CNC by non-linear fit. The Co-relation coefficient of Langmuir and Redlich-peterson isotherm model is found to be 0.99 > 1 which explains the adsorption mechanism. Pseudo-second order kinetic model fits well with the obtained equilibrium data with maximum sorption capacity (qe= 401.35 mg/g). The thermodynamic parameters indicate that NiOCNC system is more feasible, exothermic and spontaneous.