Adsorption of brilliant green dye by used-tea-powder: equilibrium, kinetics and thermodynamics studies

Abstract The present research is based on the removal of Brilliant Green (BG) dye from its aqueous solution. Used-tea-powder (UTP) was used as a potential adsorbent to remove BG Pore morphology, surface properties, crystalline nature and thermal stability UTP were assessed by using SEM, FTIR, XRD TGA analysis. optimized working conditions found be pH 6, dose 100 mg, adsorption time 60 min concentration mg L−1. qmax obtained Langmuir model 101.01 g−1 showing utility in removal. breakthrough volume efficiency column evaluated through studies fixed-bed mode. It that pseudo-second-order kinetics followed correlation studies. calculated thermodynamic parameters showed process feasible, exothermic spontaneous.