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Thermodynamic Profile of Some Heavy Metal Ions Adsorption on Charcoal Derived From Walnut Shell | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 23, Issue 2, 2012, Pages 29-38 | ||
| Author | ||
| Thermodynamic Profile of Some Heavy Metal Ions Adsorption on Charcoal Derived From Walnut Shell | ||
| Abstract | ||
| In this research, the charcoal derived was utilized for the removal of (Pb+2,Ni+2,Mn+2) ions from aqueous solutions. Adsorption process was attained to the equilibrium between (60,90 minutes) which investigated by using U.V-Visible spectrophotometer technique .The results show that the adsorption capacity dependent on weight which had better value (0.15,0.2 gm) . The capacity of Adsorption of pb+2 , Ni+2 and Mn+2 were 6.457mg/g,6.702 mg/g 7.956 mg/g.The effect of initial pH solution on adsorption capacity had been studied in the range (2-14). The Freundlich and Langmuir equations were applied ,and the parameter of those equations had been calculated . The extent of adsorption was found to decrease as the temperature increased, i.e. exothermic process, and so the thermodynamic functions ΔH, ΔG and ΔS were calculated . | ||
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