In this paper, gambit was chemically modified into insoluble adsorbent (GA). The GA was characterized by FTIR, pH(zpc), SEM, and BET. The effects of pH, adsorbent dosage, initial concentration of Cu2+ solution and contact time were studied. Batch experiments were performed with aqueous copper solutions of concentration 10 mg/L, at pH 5.0 and 0.30 g adsorbent. The experimental data was analyzed using pseudo-first order, pseudo-second order and Elovich kinetic models. The correlation coefficient calculated from pseudo-second order equation was higher than pseudo-first order and Elovich kinetic equations, indicating that equilibrium data fitted well with pseudo-second order model where adsorption process was chemisorptions. The adsorption equilibrium was well described by Langmuir isotherm model. The maximum adsorption capacity was found to be 9.950 mg/g at 333 K. The Gibbs free energy change, Delta G degrees, values were negative indicating that the process of Cu2+ ions adsorbed onto GA was spontaneous. The positive values of Delta H degrees and Delta S degrees suggested that the process of adsorption was endothermic at high temperature. (C) 2011 Elsevier B.V. All rights reserved.