Utilizing Reduced Graphene Oxide-Iron Nanoparticles Composite to Enhance and Accelerate the Removal of Methyl Blue Organic Dye in Wastewater

Abstract

In this work, a nano-composite is used to remove dye from wastewater of different industries. For this purpose, the synthesis of a magnetic 1:1 composite made of iron nanoparticles (NPs) using reduced graphene oxide is a novel technique and tested for Methyl Blue (MB) dye adsorption from aqueous solution. In this study Fe nanoparticles in reduced Graphene composite (FGOC) has been prepared using Graphene Oxide (GO). X-ray diffraction, FTIR spectroscopy and Raman spectroscopy, are used to identify the structures. Many methods have been developed for MB removal in wastewater. One of the most popular methods is adsorption because it is simple and high-efficiency, and the adsorbent is crucial. It reached a maximum MB adsorption at pH 7. The kinetic study indicated that the adsorption of MB process was fitted well to the quasi-first-order and quasi-second-order kinetic models. The isotherm study revealed that the MB adsorption process obeyed the Langmuir and Freundlich adsorption Isotherms models. The GO adding content and absorption conditions on the methyl blue removal efficiencies were investigated. This adsorbent is easily recovered by an external magnetic field from the treated wastewater and has high reusability.