Enhanced adsorption of Foron Black RD 3GRN dye onto sugarcane bagasse biomass and Na-alginate composite

This study focuses on the potential of sugarcane bagasse for the remediation of Foron Black RD 3GRN (FB-3). Biomass was modified by acid, alkali, chelating agents, organic solvents and surfactant treatments and employed for adsorption. Different varieties of sugarcane bagasse biomass namely modified, native and immobilized were employed for adsorption of dye and process variables were optimized. The optimum conditions for maximum removal of dye (262.87 mg/g) were cetyl trimethylammonium bromide (CTAB) treated biomass, pH 6, dose of sorbent 0.05 g and temperature 30 degrees C. The adsorption data followed the pseudo-second-order kinetic model and Langmuir isotherm. Fourier transform infrared (FTIR) analysis exhibited the contribution of carboxylic and carbonyl groups in the adsorption of dye. The results have shown that CTAB-treated sugarcane bagasse is a potential adsorbent for textile effluents.