JFET_V12_N4_RP2 S.V.A.R. Sastry B. Sarva Rao Journal on Future Engineering and Technology 2230–7184 12 4 27 32 Adsorption Kinetics, Cu (II), Freundlich Isotherm, Langmuir Isotherm, Spent Tea Extract (STE), Wastewater There are many mineral processing industries generating huge amount of effluents containing metals, such as Nickel, Zinc, Lead, Cadmium, Chromium, and Copper. These metals stay over for millions of years and also pollute the water bodies. This work presents the study of the capturing of copper ions from wastewater using Spent Tea Extract (STE). Experiments were piloted to discover the factors influencing adsorption kinetics. Based on the previous work, the following optimum conditions were established: Adsorbent dosage of 0.5 g (in 50 ml solution), pH of 5 and temperature of 30 °C. The adsorption capacity was highest at solution pH 5. The kinetics and adsorption isotherms were studied using pseudo-second order equation, and Langmuir, Freundlich isotherm models. Adsorbent dosage, pH and temperature played a significant role in the rate of adsorption. The percentage removal of Cu(II) was higher initially and reached equilibrium after 30 min. The maximum removal rate for Cu(II) was 59.84%. The examination of kinetics and adsorption isotherm revealed that the sorption experiments fitted well with the pseudo-second order equation and Freundlich isotherm model, respectively. May - July 2017 Copyright © 2017 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=13629