Mahboube Shirani

In this research study, grantia aucheri as an efficient biosorbent was used for removal of copper from wastewater. The influence of important parameters including pH, temperature, time, and amount of biosorbent on the adsorption process were investigated. The optimum conditions of 4.5, 25 °C, 8 min, 15 mg were obtained for pH, temperature, time, and amount of sorbent, respectively. Maximum experimentally achieved adsorption percentage of 98.9 ± 2.5 was obtained under the optimum conditions which showed the high adsorption potential of the proposed sorbent. The experimental data were found to fit properly to the Fredluich model which indicated that the sorption took place on a heterogeneous material. Sorption capacities of 145 mg g-1 was achieved for copper from sorption isotherms.