Utilization of palm leaves powder for removal of Rhodamine-B from an aqueous solution
Muhammad Imran Khan, Ismail W. Almanassra, Abdallah Shanableh, Muataz Ali Atieh, Suryyia Manzoor, Muhammad Hayat, Malek Besbes Hlila, Sarra Elgharbi, Fathi Alimi, M. Jemmali
Abstract
In this research, adsorption of Rhodamine-B (RhB) from an aqueous solution onto palm leaves powder at room temperature was reported. The adsorption capacity of palm leaves powder was increased with initial concentration of RhB, and contact time while declined with temperature, pH, and mass of palm leaves powder. Results of adsorption kinetics study represented that RhB adsorption fitted to pseudo-second-order model because the value of correlation coefficient (R2 = 0.995) was close to unity. Adsorption isotherm illustrations indicated that RhB adsorption obeyed Langmuir isotherm model with correlation coefficient (R2 = 0.999) close to unity. Results of thermodynamics investigation indicated that RhB adsorption onto palm leaves powder was an exothermic process because the value of change in enthalpy (ΔH°= −16.95 KJ/mol) was negative. Moreover, the positive value of Gibb’s free energy represented that RhB adsorption onto palm leaves powder was a non-spontaneous process. In addition, the regeneration of palm leaves powder was also conducted.