Removal of methylene blue from aqueous effluent using fixed bed of groundnut shell powder

Removal of methylene blue from aqueous solution using a low-cost adsorbent groundnut shell powder (gnsp) was studied using fixed bed. bed service depth model and thomas model were employed to study the adsorption kinetics and to predict break-through curves for the system. both models fit the experimental data very well with very high r 2 values. percentage color removal increased with increase in bed height. it was found that adsorption potential of gnsp was in the range of 0.238 to 0.272 kg/kg of adsorbent. these results show that the gnsp can be effectively used as low-cost alternate adsorbent for the removal of pollutants from aqueous streams. © 2013 sunil kumar et al.