Photoremoval of ketoprofen, naproxen and phenazopyridine from pharmaceutical residues in a hospital wastewater treatment plant via Fe3O4-MnO2@rGO nanocomposite

Title : Photoremoval of ketoprofen, naproxen and phenazopyridine from pharmaceutical residues in a hospital wastewater treatment plant via Fe3O4-MnO2@rGO nanocomposite

Abstract:

A reduced graphene oxide (RGO) supported Fe3O4-MnO2 nanocomposite (Fe3O4-MnO2@rGO) was successfully prepared for catalytic degradation of pharmaceutical residues (ketoprofen, naproxen and phenazopyridine ) present in hospital wastewater treatment plant. The removal efficiencies of ketoprofen, naproxen and phenazopyridine  were observed as high as 100%, 99.9% and 99.8 under the conditions of pH = 7.0, Fe3O4-MnO2@rGO concentration of 0.8 mg/L, a reaction time of  20 min at a temperature of 30 0C at individual pharmaceutical concentration of 900 mg/l. This nanocomposite  had good magnetic recoverability and excellent reusability. Fe, Mn, and RGO could play a synergistic role in the improvement of pollutants removal. Quenching results indicate that surface bounded some chemical  groups was the major contributor to pollutant decomposition, and the -OH groups on the composite surface shouldered a significant role in the activation during photodegradation. The results indicate that the magnetic Fe3O4-MnO2@rGO nanocomposite has a good potential for removing in the pharmaceutical residues from the  waterbody. Some physicochemical analysis also was performed to determine  the structure and the surface properties of Fe3O4-MnO2@rGO nanocomposite.

Biography:

Prof. Dr. Delia Teresa Sponza is currently working as a professor at Dokuz Eylül University, Department of Environmental Engineering. Scientific study topics are; Environmental engineering microbiology, Environmental engineering ecology, Treatment of fluidized bed and activated sludge systems, Nutrient removal, Activated sludge microbiology, Environmental health, Industrial toxicity and toxicity studies, The effect of heavy metals on microorganisms, Treatment of toxic compounds by anaerobic / aerobic sequential processes, Anaerobic treatment of organic chemicals that cause industrial toxicity and wastewater containing them, Anaerobic treatability of wastewater containing dyes, Treatment of antibiotics with anaerobic and aerobic sequential systems, Anaerobic and aerobic treatment of domestic organic wastes with different industrial treatment sludges, Treatment of polyaromatic compounds with bio-surfactants in anaerobic and aerobic environments, Treatment of petrochemical, Textile and olive processing industry wastewater by sonication, Treatment of olive processing industry wastewater with nanoparticles and the toxicity of nanoparticles. She has many international publications  with an H index of 42 and 6000 citations.