Ali Fakhri - Profile on Academia.edu (original) (raw)

Ali Fakhri

Augustine ODIBO related author profile picture

J. Water Environ. Nanotechnology - JWENT related author profile picture

Ahmad Abdullah related author profile picture

farshad hamidi related author profile picture

Béchir HAMROUNI related author profile picture

amina amina related author profile picture

Abdulaziz Al-shaibani related author profile picture

Talib M Albayati related author profile picture

Saviour Umoren related author profile picture

Nida Salem related author profile picture

Uploads

Papers by Ali Fakhri

Research paper thumbnail of Adsorption characteristics of graphene oxide as a solid adsorbent for aniline removal from aqueous solutions: Kinetics, thermodynamics and mechanism studies

Journal of Saudi Chemical Society, 2013

The aim of this study is to investigate the possibility of graphene oxide (GO) as an alternative ... more The aim of this study is to investigate the possibility of graphene oxide (GO) as an alternative adsorbent for aniline removal from aqueous solution. Adsorption properties of GO for aniline removal were regularly investigated, including pH effect, adsorbent dose, temperature, contact time and initial concentration. The adsorption amount of aniline decreased with increasing pH. The experimental data were evaluated by Langmuir, Freundlich, Temkin and Harkins-Jura models in order to describe the equilibrium isotherms. Equilibrium data fitted well to the Langmuir model. The kinetic parameters achieved at different concentrations were analyzed using a pseudo firstorder, pseudo second-order kinetic equation and intra-particle diffusion model. The experimental data fitted very well the pseudo second-order kinetic model. Thermodynamic parameters (free energy change, enthalpy change, and entropy change) announced that the removal of aniline from GO was endothermic and spontaneous. The study showed that GO could be used as an efficient adsorbent material for the adsorption of aniline from aqueous solution.

Research paper thumbnail of Adsorption characteristics of graphene oxide as a solid adsorbent for aniline removal from aqueous solutions: Kinetics, thermodynamics and mechanism studies

Journal of Saudi Chemical Society, 2013

The aim of this study is to investigate the possibility of graphene oxide (GO) as an alternative ... more The aim of this study is to investigate the possibility of graphene oxide (GO) as an alternative adsorbent for aniline removal from aqueous solution. Adsorption properties of GO for aniline removal were regularly investigated, including pH effect, adsorbent dose, temperature, contact time and initial concentration. The adsorption amount of aniline decreased with increasing pH. The experimental data were evaluated by Langmuir, Freundlich, Temkin and Harkins-Jura models in order to describe the equilibrium isotherms. Equilibrium data fitted well to the Langmuir model. The kinetic parameters achieved at different concentrations were analyzed using a pseudo firstorder, pseudo second-order kinetic equation and intra-particle diffusion model. The experimental data fitted very well the pseudo second-order kinetic model. Thermodynamic parameters (free energy change, enthalpy change, and entropy change) announced that the removal of aniline from GO was endothermic and spontaneous. The study showed that GO could be used as an efficient adsorbent material for the adsorption of aniline from aqueous solution.

Log In