High-efficiency of Peanut Shell Biosorbents in Cationic Dye Removal for Water Pollution Treatment

This study investigates the adsorption of Acid Fuchsin (AF) dye on the peanut shells (PS) surface. The PS material was characterized using FTIR and SEM-EDX studies, which identified the presence of cellulose compounds. Multiple adsorption parameters, such as pH, temperature, adsorbent dose, initial dye concentration, kinetics, isotherm, and thermodynamics, were analyzed. As per the results, the adsorption of AF onto the PS surface followed the pseudo-second-order with Langmuir isotherm models and an adsorption capacity of 111.11 mg g⁻¹. These findings demonstrate that PS adsorbent is highly effective in eliminating cationic dyes from aqueous solutions