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Behzad Heibati,Ahmad B. Albadarin,Susana Rodriguez-Couto,Nurdan Gamze Turan,Okan Ozgonenel,M. Asif,Inderjeet Tyagi,Shilpi Agarwal,Vinod Kumar Gupta 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.31 No.-
Rapid removal of the Acid Orange 7 (AO7) from aqueous solutions using natural pumice (NP) and Fecoatedpumice (Fe-CP) as low-cost adsorbents was well investigated and elucidated. The impact ofseveral influential parameters such as initial pH, initial AO7 concentration and contact time on theadsorption of AO7 removal was studied and optimized. The good agreement of adsorption equilibriumdata and analysis of isotherms with the Freundlich isotherm proved that it is the best fitted adsorptionisotherm model for the depicting the AO7 adsorption on both the developed adsorbents, which clearlyindicates the heterogeneity of the adsorbent surface. The maximum adsorption capacities for the NP andFe-CP were found to be 15.56 and 27.68 mg/g, respectively. The rate of adsorption followed the pseudosecond-order kinetic model.