Studies on optimization of removal of orange G from aqueous solutions by a novel nano adsorbent, nano zirconia

Abstract

A nanoadsorbent, nano zirconia was investigated for the removal of Orange G from aqueous solutions. Optimization was carried out via Box-Behnkehn Design and one variable at a time design. The parameters namely initial concentration (50-100. ppm), pH (2 to 6), and adsorbent dose (2 to 10. g/L) at 30. °C were optimized by BBD. The following conditions were pointed out by OVAT: pH. =. 2, initial concentration. =. 50. ppm and adsorbent dose. =. 2. g/L. The response surface methodology results for pH and initial concentrations were the same as that obtained by OVAT but were different for adsorbent dose. © 2015 The Korean Society of Industrial and Engineering Chemistry.