Thermodynamic and Kinetic study of adsorption of phenol and some derivatives using prepared activated carbon | ||
| Tikrit Journal of Pure Science | ||
| Article 1, Volume 17, Issue 1, March 2012, Pages 166-171 | ||
| Authors | ||
| a H. Abulrahman; | ||
| Abstract | ||
| The study included the adsorption of phenol and o, m, p-cresol on activated carbon from their aqueous solution. The effect of parameters such as contact time, initial concentration and temperature have been investigated. The results showed that the adsorption efficiency increased sharply with the time in the first five minutes then gradually decreased and reached to equilibrium within 40-60 minutes for all the considered compounds. The adsorption efficiency was found to increase with the increase of initial concentration, accompanied by increase in the adsorption capacity. The elevation of temperature showed increase in the adsorption efficiency. Depending on the variation of adsorption efficiency with the temperature, thermodynamic parameters (∆G, ∆H and ∆S), were estimated. Two kinetic models were applied on the adsorption data namely; pseudo first and pseudo second order equations. The results of the kinetic study denoted that, the adsorption data of the studied systems are better fit the second order kinetic model | ||
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