Ayat Ahmed shukran^1,, Lekaa Hussain Khadim²

Adsorption from aqueous solutions by employing Peel of pomegranates charcoal (PP) for folic acid as inexpensive and accessible adsorbent materials are explored in this research. The sorption behavior of (PP) toward folic acid was investigated using batch adsorption studies as a function of temperature, pH, reaction duration, dose of (PP) wastes, and beginning concentration. Time-dependent tests revealed that for (PP), adsorption achieved equilibrium after 90 minutes. Folic acid adsorption is reported to be more effective in acidic pH for (PP). Equilibrium isotherms were investigated by using Freundlich, Langmuir, Temkin and Dubinin-Radushckevich (D-R) models and it was observed that the equilibrium data could be well explained by Temkin for the adsorption process on (PP) wastes. The experimental findings showed that the nine kinetics models, which included basic first-order, pseudo first-order, second-order, and pseudo second-order models, followed the Pseudo second-order equation for PP with strong correlation coefficients (R2 = 0.9997). The determination of thermodynamic parameters, including ∆H^o, ∆S^o, and ∆G^o, revealed a predominance of physisorption, according to the data .The adsorption's endothermic nature process is confirmed by the positive values of ∆H and ∆S, which also enhance the unpredictability of the system interface. The favorable and spontaneous adsorption process is shown by the negative value of ∆G. The results show that PP may be effectively employed as a pharmaceutical adsorbent to remove folic acid from liquid states.

langmuir, temkin, dubinin, isotherm