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Thermodynamic study of Egg white albumin adsorption on charcoal derived from peach Nuclei and walnut shell | ||
| Iraqi National Journal Of Chemistry | ||
| Article 1, Volume 0, Issue 37, 2014, Pages 51-59 | ||
| Author | ||
| Abbas Hmood Al-Khafagy | ||
| Abstract | ||
| Abstract In this study , the efficiency of waste charcoal derived from walnut shell and peach Nuclei from synthetic wastewater(EWA) has been studied . Batch adsorption experiments were carried out as a function of pH , adsorbent mass, EWA concentration, contact time and temperature . The pH of each solution was not controlled , this is because the net interaction between the adsorbent and EWA could be disturbed by the buffer solution , therefore , the experiments were carried out in a pH 2 to 4 . These experiments were done under room temperature and showed that the optimum weight of charcoal derived from Walnut shell was 0.2gm , equilibrium time was 60min. , removal % (86.2) and Kd (86.2) , While optimum weight of charcoal derived from peach Nuclei was 0.05gm , equilibrium time was 120min. , removal % was( 34.5 ) and Kd( 138). Thermodynamic parameters such as ΔH , ΔG , ΔS , were calculated . The adsorption process on charcoal derived from peach Nuclei was endothermic, while exothermic on charcoal derived from Walnut shell, the results were analyzed by the Langmiur and Freundlich equation . | ||
| Keywords | ||
| Egg white albumin; Langmiur and Freundlich adsorption; Isotherm | ||
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