A systematic exploration on the kinetic and equilibrium studies of adsorption of Cr(VI) ion from aqueous solution by activate d carbon prepared from leaves of Pongamia pinnata was carried out in batch process. The potential of adsorbent was evaluated by varying various parameters such as effect of initial concentration, adsorption dose, contact time and temperature. Experiment al data were fitted into linearised form of Lagergren and Ho kinetic equations for pseudo first order and pseudo second order models respectively. The kinetic parameters have been discussed in detail. The results revealed that the adsorption of Chromium (VI) ion onto chosen adsorbent followed the pseudo second order kinetics. The adsorption process was controlled by intra particle diffusion and it was confirmed using Webber Morris plot parameters.