Adsorption of Cu2+, Ni2+ And Zn2+ from Aqueous Solutions on Activated Carbons Prepared from Ultrasound-Assisted KOH-Impregnated Hazelnut Shell in Multi-Ion System

Abstract

The adsorption of three toxic heavy metals (Cu2+, Zn2+ and Ni2+) from aqueous solutions on activated carbon prepared from ultrasound-assisted KOH-impregnated hazelnut shells has been studied as a function of particle size, ultrasonic power density, impregnation ratio, impregnation time, activation temperature and activation time. In this study, batch equilibrium adsorption was employed to optimize of adsorption data
of Cu2+, Ni2+ and Zn2+ in multi-ion system. The order of the percentage removal via activated carbon is found as Cu2+ > Zn2+ > Ni2+.