Removal of Dye (Reactive Green 19) from Aqueous Medium Using Amin Modifed Resin

Abstract

Systematic batch mode studies of adsorption of reactive green 19 (RG 19) on amine group functionalized poly(GMA-EGDMA) beads were carried out as a function of process of parameters including initial RG 19 concentration, dose of adsorbent, pH, ionic strength and temperature. Amine modified beads, the poly(GMA-EGDMA)-TREN, were found to have excellent adsorption capacity. For RG 19 the Freundlich and Langmuir isotherm models were used to test the equilibrium data. Both the Freundlich and Langmuir models were to be found best fitted isotherm models. The linear regression coefficient R2 was used to elucidate the best fitting isotherm models. The monolayer (maximum) adsorption capacity (qm) was found to be 140.84 mg g beads. The results were fitted to both Freunlich and Langmuir isotherm models. The dimensionless separation factor (RL) values lie between 0.44 to 0.96 indicated favorable adsorption.