Thermodynamic, Kinetic, Batch Adsorption and Isotherm Models for the Adsorption of Nickel from an Artificial Solution Using Chloroxylon Swietenia Activated Carbon

Chloroxylon Swietenia tree bark was used as an eco-friendly bio-adsorbent in our research work. This work investigates the adsorption efficiency of nickel using a batch adsorption technique. Chloroxylon swietenia, commonly known as East Indian satinwood, is also known as Porasu in Tamil. Chloroxylon swietenia activated carbon (CSAC) was prepared from Chloroxylon swietenia tree bark as an adsorbent. Effective experimental parameters such as carbon dosage, effect of pH parameter, contact time, pseudo-first order kinetic model, and Elovich model were employed for the removal of nickel from an aqueous solution. The equilibrium data was calculated using adsorption isotherm models such as Langmuir and Freundlich. The percentage removal of nickel was calculated by thermodynamic parameters. Our results proved that the removal of nickel by CSAC was endothermic and spontaneous in nature. The adsorption of nickel on CSAC was determined by using the Fourier transform infrared spectroscopy technique.