Ph.D. thesis at the Faculty of Science College at the University of Basrah  (Using  Fe₂O₃ nanoparticles and bioflocculant produced by environmental bacteria for industrial wastewater treatment), and The study aims to isolate bacteria from contaminated environments and identify at the molecular level based on 16SrRNA gene sequences and screening of bacterial isolates' ability to produce bioflocculants and nanoparticles and include characterization of bioflocculants and iron oxide nanoparticles. The study recommended the use of Fe₂O₃NPs and bioflocculants in the bioremediation of various pollutants such as dye, heavy metals, and pesticides.