Reza Moradi - Department of Chemistry, Toyserkan Branch, Islamic Azad University, Toyserkan, Iran
Javad Hosseini - Department of Chemistry, Toyserkan Branch, Islamic Azad University, Toyserkan, Iran
Ali Bodaghi - Department of Chemistry, Toyserkan Branch, Islamic Azad University, Toyserkan, Iran
Milad Khazaei - Department of Chemistry, Toyserkan Branch, Islamic Azad University, Toyserkan, Iran

In this paper, removal of Acid Yellow 23 (AY23), from aqueous solutions using powder Fe2O3 was studied. The kinetic and isotherm of dye adsorption were studied. The effects of operational parameter such as pH, adsorbent dosage and contact time on the process were studied and optimized. The results showed that dye adsorption onto powder Fe2O3 followed Langmuir isotherm. Adsorption kinetics of AY23 dye onto powder Fe2O3 followed the pseudo-second-order kinetic model.

removal, kinetic model, adsorption, Fe2O3