Langmuir and D-R isotherm models exhibited the best fit of experimental data.  The thermodynamic parameters (ΔG°, ΔH°, and ΔS°) revealed that the biosorption of considered metal ions was feasible, spontaneous and exothermic at 25-45°C.  Furthermore, the biosorbent has significantly removed heavy metals from industrial wastewater at the optimized condition.
THERM