The Journal of

Abstract

Introduction: 4-chlorophenols one of the most common pollutants in wastewater is generated from the chemical and petrochemical industries. It is due to the presence of chloride and benzene ring is resistant to biodegradation. In this study, the use of granulated graphene oxide nano particles as an adsorbent nanostructure with better properties than other adsorbents for Removal of 4- chlorophenol from aqueous solution were investigated

Methods: This research was implemented during the year 2013-2014 where the Granules of Graphene oxide nanoparticles were prepared using sodium silicate and X-ray diffraction techniques and electron microscope were used to identify the morphology and structure of the adsorbent of.  Parameters  affecting the adsorption process such as initial concentration of  4-chlorophenol(5,10,15,20,25,30mg/L), amount of adsorbent(20,40,60,80% by weight), contact time (3,5,10,20,30 min) and pH(4,6,7,8,9) were investigated by changing one factor at a time. Finally, the data fitness with Langmuir and Freundlich isotherms were showed.

Results: Adsorption process reached to equilibrium after 20 minutes. 2 g/L of graphene oxide granules at 3 minutes and 7 = pH could remove 5 mg/L 4-chlorophenol up to 58%. Freundlich isotherm have describing adsorption process and R² =0.92.

Conclusion: Absorbed process by the granules of Graphene oxide nanoparticles is low-cost high-efficiency and it could used to reduce and eliminate environmental pollutants particularly aqueous solutions.