Valorization of olive-pomace as a green sorbent to remove Basic Red 46 (BR46) dye from aqueous solution

In the current work, a by-product of local olive pomace was valorized as an eco-friendly biosorbent to clear Basic Red 46 dye (BR46). The surface properties of the biosorbent were studied by various analytical implements such as XRF, XRD, FTIR, SEM, and pH(pzc). High removal rates (> 90%) were attained at optimal parameters: 240 min of contact, pH of 7, and 400 rpm at 23 & DEG;C. The Freundlich model presented the best adjustment of equilibrium curves, while the pseudo-second-order model was the practical kinetic model that matched the experimental data. The results of the thermodynamic investigation revealed that the adsorption process is spontaneous (& UDelta;G & DEG; < 0), exothermic & UDelta;H & DEG; (- 40.345 kJ/mol), and probably physical. This study showed that the native olive pomace residue could be successfully transformed into green sorbents of water contaminants.