Development of composite materials based on MgO using sol-gel technology

Abstract

The study investigated the properties and efficiency of MgO:ZnO, MgO:Y₂O₃, MgO:Fe₂O₃ and MgO:FeZnOF composite materials for filtering oil-contaminated water and for using them as adsorbents for oil waste. The samples were heat-treated in air at 700°C for one hour. The MgO:ZnO composite demonstrated high efficiency in removing oil contaminants from water, achieving 85% removal due to the presence of active centers on the surface of the material that facilitate adsorption. MgO:Y₂O₃ demonstrated stability and a removal rate of 80% due to the improved porosity provided by yttrium. MgO:Fe₂O₃ achieved 90% removal of oil contaminants due to its magnetic properties, which allows the use of magnetic methods for cleaning. The MgO:FeZnOF composition demonstrated unique adsorption properties, removing up to 88% of oil contaminants. All materials studied demonstrated high efficiency in filtering and adsorbing oil waste.