International Journal of Materials Chemistry and Physics
Articles Information
International Journal of Materials Chemistry and Physics, Vol.6, No.1, Mar. 2020, Pub. Date: Mar. 2, 2020
Thermodynamic Study and Adsorptive Potential of Chicken Egg Shells for the Removal of Acetic Acid from Wastewater
Pages: 1-6 Views: 676 Downloads: 187
Authors
[01] Emhemmad Jumha Emhemmad, Chemistry Department, Sebha University, Taraghun, Libya.
[02] Wafa Khalleefah Amhimmid, Chemistry Department, Azzaytuna University, Tarhuna, Libya.
Abstract
This study is concerned with the thermodynamic properties and the adsorption isotherms of acetic acid adsorption by using the chicken egg shells powder as low cost natural adsorbent, The egg's shell were grinded and sieved after washing with distilled water and Acetone, and dried at 120°C. The concentration of acetic acid was measured before and after adsorption, The amount of acetic acid adsorbed was determined with respect to initial acid concentration, equilibrium time and different acid concentration were obtained manually by titration method. properties of adsorption were determined by applying Freundlich and Langmuir isotherms models to define the thermodynamic properties of this process, adsorption kinetics and thermodynamic parameters ΔH, ΔG and ΔS were calculated. The Results were analysed by applying the Freundlich and Langmuir equations at different temperatures 25°C, 40°C, and 60°C, and determined the characteristic parameters for each adsorption isotherm used (R2). The Temperature effect has been investigated, the results obtained indicate that the adsorption increase with increasing the temperature. In other words, the adsorption process is of Endothermic type (+ΔH), the results also show that is a spontaneous process (-ΔG) and regular indices (-ΔS), adsorption capacity and intensity were increased with increasing temperature.
Keywords
Adsorption, Egg Shells Powder, Acetic Acid, Freundlich & Langmuir Isotherms
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