الفهرس 
General introductionOnly 14 pages are availabe for public view
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Abstract
In our research work, we synthesized easy separable and recyclable magnetic nanoparticles (MgFe2O4/rGO - MnFe2O4/rGO) for removal of MB dye as an organic cationic pollutant model. The metal ferrite nanoparticle [MFe2O4, M (II) = Mg, and Mn) is highly attached to the wrinkled edge of the rGO, concentrated on its surface rather than the other smooth parts. This way of attachment enhances the magnetization of the prepared nanoparticles, which are easily removed by a simple magnet.
The three chapters of this research work can be summarized as follows:
Chapter one: It contains a general introduction to the organic water pollutants generated by various industries. It also includes a brief explanation of the dyes, as they are used in many industries such as paper, dyeing, textile, etc., and the dangerous effects on the environment and human health that may result from their disposal in the environment. It also includes an explanation of some of the methods used in the treatment of industrial wastewater and the conditions that must be met when choosing Treatment methods. It also included an introduction to nanotechnology and its multiple uses in many fields, especially in the field of wastewater treatment, and some methods used in preparing nanomaterials.
Chapter Two: It includes an explanation of the experimental methods and the chemicals used in the synthesized magnetic graphene, which was later applied in removing organic pollutants from liquid solutions. It also contains the devices used in the preparation and description of the prepared magnetic graphene with an explanation of the specifications of these apparatus such as: XRD, XPS, HETEM, FESEM, VSM, and BET.
Chapter Three: This chapter includes the characterization of the prepared magnetic graphene and the experimental results of the adsorption process which was discussed of them as follows:
The physicochemical features were explored using Field Emission Scanning Electron Microscopy (FTSEM), high-resolution electron microscope (HRTEM), X-ray diffraction (XRD), Vibrating-sample magnetometer (VSM), and N2-adsorption/desorption isotherms. The influences of catalyst dose, dye concentration, pH, rate of agitation, and the change in temperature during the dye removal process were investigated. Various kinds of adsorption isotherms equations were applied to get a clear picture of the adsorption process mechanism.