Removal Color From Aqueous Solution By Penta Aza Tetra Ethylene Supported On Polyacrylamide As a New Adsorbent Kinetic And Adsorption Isotherm Studies

Modified cross-linked polyacrylamide (PAA) with penta aza tetra ethylene group was used for the removal of Bromocroso green (BCG), industrial dye from aqueous solutions. Batch mode experiments were conducted using various parameters such as pH, contact time, amount of adsorbent and BCG concentration and characterized with FTIR analyses. Fitting the experimental data to different kinetic models including pseudo-first-order, pseudo-second-order, Elovich and intra-particle diffusion kinetic models show the suitability of the pseudo-second-order kinetic model to interpret in the experimental data. The experimental isotherm data were analyzed using Langmuir, Freundlich and Temkin isotherm models. The results showed that the adsorption behavior of BCG on modified adsorbent were well-fitted with the Temkin model at 25˚C. The maximum adsorption capacity was 101.87 mg/g for initial concentration 76 mgL-1.