Nickel ion adsorption from water by Nano Fe₂O₃/PP prepared from pomegranate peel residue and treated magnetically

Department of Ecology, Faculty of Science, University of Kufa, Najaf, Iraq

^* Corresponding author: mohammedj.alhayderi@uokufa.edu.iq

Abstract

In this study, biochar produced from pomegranate peels and treated by magnetization was prepared in the treatment of water contaminated with nickel ions. The percentage of nickel removal at a weight of (0.025) mg/L of magnetized biochar was (98.761%) at a concentration of (15 ppm), and the percentage of nickel removal under the influence of the acid function was (99.188%) where pH=3 at the same weight and concentration, while the percentage of nickel removal at the shaking time was (99.402%) at a shaking time of 15 minutes and a weight of 0.025 mg/L and a concentration of 15 ppm. As for the impact of temperature on the adsorption process, we find that the amount of adsorption of nickel ions increases with increasing temperature. This indicates that the adsorption process is an endothermic process. This means that the value of ΔH is a positive value. This indicates the presence of an absorption and adsorption process at the same time, weight, concentration, pH value 3, and temperature 328 is (99.615%). From the results, we find that the amount of adsorbed material increases as the weight of the adsorption material Nano Fe₂O₃/PP decreases. This is due to the increase in the surface area of the material, as the nickel ion is linked to the active sites by electrostatic forces.