Use of Polyaniline/Alginate Composite Material in the Adsorption of Acid Violet 90 Dye:Kinetics and Isotherm Evaluation

Abstract

In this study, Polyaniline/Alginate (PANI/SA) material was used to adsorption of Acid Violet 90 (AV 90) dye. The characterization of PANI/SA was analyzed by Fourier transform infrared spectroscopy (FTIR). The effect of pH (2-6), number of PANI/SA beads (10-50 adet) and concentration of AV 90 (25-200 mg/L) on removal of dye were examined. The highest dye removal was obtained at pH 2. Langmuir, Freundlich and Temkin models were used to determine AV 90 adsorption isotherms. The maximum adsorption capacity (qm) value obtained from the Langmuir model in the range of 25-200 mg/L dye concentrations was found to be 138.9 mg / g. To determine the adsorption kinetics, Pseudo first order and second order kinetic models were used and it was found that the Pseudo second order kinetic model was more compatible with the experimental data. Experimental results have shown that PANI/SA adsorbent is a very good alternative for adsorption of AV 90 dye.

Keywords

• Polyaniline
• Alginaet
• Acid Violet 90
• Adsorption
• Adsorption kinetics