Effect of Some Parameters on the Adsorption of Heavy Metals using Quinine Functionalized Silica-Coated Magnetic Graphene Oxide (MgO@SiO2-Q).

Abstract:

Heavy metal ions are demonstrated to have adverse effects on human health and animals which causes physical discomfort, life threatening illness and irreversible damage to vital body system even at low concentrations. The conventional methods of treatment of heavy metal contamination includes chemical precipitation, chemical oxidation, ion exchange etc. These methods are costly, energy intensive and often associated with generation of toxic byproducts. Thus, Adsorbent has been investigated as a cost-effective method for removal of heavy metals from wastewater. In this study, MGO@SiO2Q nanocomposites functionalized with Quinine Q, was applied to remove Pb(II) and Ni(II)metal ions from contaminated water. For this purpose, the modified Hummers method was used for the synthesis of GO. The synthesized GO was magnetized and was coated with 3-chloropropyltrimethoxysilane(CPTS) finally functionalized with Quinine. The results confirmed that GO synthesis processes, magnetization and functionalization were successfully performed. The result of MGO@SiO2-Q adsorption performance revealed that the adsorbent increases as both pH and contact time increases for both Pb(II) and Ni(II) respectively. The results in this study indicate that MGO@SiO2-Q can be considered as a practical and effective adsorbent for heavy metal removal in contaminated water.