Abstract

The aim of this work was the application of polyaniline as adsorbent for removal of hexavalent chromium from aqueous solution. Response surface method (RSM) as a mathematical technique was used for modeling and optimazed the considerable parameters. The operating parameters such as initial chromium concentration,adsorption time and pH were evaluated. Maximum chromium removal was 11.51 mg/g at the optimum condition of initial pH 6.23,initial Cr+6 concentration 92.52 mg/L,and contact time about 19 min. According to statistical analysis,R2(0.75),Adjusted R2 (0.52),the mean adsorption uptake (8.25 mg/g) and standard deviation (2.09) were calculated. © 2016,International Journal of Pharmacy and Technology. All rights reserved.