Renugadevi, NIjmadevi, S2017-02-142017-02-142016https://ir.avinuty.ac.in/handle/avu/1351Adsorption process has been found to he one of the best treatment methods for the removal of dyes from aqueous solution. This study H'05 carried out to examine the adsorption capacity of the low cost adsorbent prepared from ripened Bauhenia racemosa seed pods(BRSP) for the removal of Remazol black 5(RB5) dve from aqueous solution. The influence of contact time, pH, adsorbent dose on the adsorption process was studied. The experimental results indicated that the rate o f adsorption increased rapidly with time and equilibrium was attained within about eighty minutes. The adsorption kinetics of Remazol black 5 onto the low cost adsorbent used in this study followed first order Lagergren kinetic rate equation. The intra particle diffusion study shows that the rate constants for intra particle diffusion (Kp)increased with increase in initial concentration of Remazol black 5 solution.