This study aims to employ low-cost agro waste biosorbent tamarind (Tamarindus indica) pod shells and activated carbon prepared by complete and partial pyrolysis of tamarind pod shell for the removal of hexavalent chromium ions from aqueous solution. The effect of parameters namely, initial metal ion concentration, pH, temperature, biomass loading on chromium removal efficiency were studied. More than 96.9% removal of Chromium was achieved using crude tamarind pod shells as biosorbent. The experimental data obtained were fitted with Langmuir, Freundlich, Temkin and Redlich-Peterson adsorption isotherm models. The experimental data fits well to Langmuir, Freundlich and Temkin isotherms with regression coefficient R2 more than 0.9. For Redlich-Peterson adsorption isotherm the experimental data does not fit so well. The crude tamarind had maximum monolayer adsorption capacity of 40 mg/g and a separation factor of 0.0416 indicating it as best adsorbent among the three tested adsorbent. Further, an attempt is made to fit sorption kinetics with pseudo first order and pseudo second order reactions. Pseudo second order kinetics model fits well to the experimental data for all three adsorbents.