Fundamental investigation on the adsorption of methylene blue by powdered biomass of Cicer arientinum is conducted in batch conditions. The effect of different parameters such as contact time, sorbent dose, pH and temperature has been studied. Adsorption kinetic modeling data were found out. The kinetics of biosorption results shows that sorption process is well explained by pseudo–second order model with determination coefficients 0.978- 0.988 for S-I under all experimental conditions. The value Kp is found to be 0.04890 the sorption mechanism was determined by Weber and Morris intraparticle diffusion model. Thermodynamic parameter viz KD, ΔG have also been calculated to determine the spontaneity of the process.