JFET_V8_N2_RP03 D. Krishna Padma Sree R. Journal on Future Engineering and Technology 2230 – 7184 8 2 24 32 Response Surface Methodology (RSM), Box-Behnken Design (BBD), Limonia Acidissima Hull Powder, Chromium (VI), Adsorption The potential use of Limonia Acidissima hull powder for the removal of chromium (VI) from waste water has been investigated in batch mode experiments. Influence of parameters like initial chromium (VI) concentration (5-30 mg/l), pH (2-4), and biomass dosage (2-2.8 g/l) on chromium (VI) adsorption were examined using response surface methodology. The Box-Behnken Design (BBD) in response surface methodology was used for designing the experiments. The optimum conditions for maximum removal of chromium (VI) from an aqueous solution were as follows: adsorbent dosage (2.4555 g/l), pH (1.8211) and initial chromium (VI) concentration (5 mg/l). The high correlation coefficient (R2 =0.991) between the model and the experimental data showed that the model was able to predict the removal of chromium (VI) from waste water using Limonia Acidissima hull powder efficiently. November 2012 - January 2013 Copyright © 2013 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=2097