Photoremoval of some brominated phenols (4-bromophenol and 2,4,6-tribromophenol) with reused polystyrene foam and SnO2

Title : Photoremoval of some brominated phenols (4-bromophenol and 2,4,6-tribromophenol) with reused polystyrene foam and SnO2

Abstract:

Bromophenols such as 4-bromophenol, 2,4-dibromophenol, and 2,4,6-tribromophenol are found to occur ubiquitously in air, water, and sediment, and their origin is thought to be both natural and anthropogenic. Plastic debris is a major environmental concern, and to find effective ways to reuse polystyrene (PS) presents major challenges. In this study, polystyrene foams wastes  was doped to SnO2 to photodegrade two brominated  phenols namely bromophenol  and 2,4,6-tribromophenol. Crystallinity, size and shape of the polystyrene/ SnO2 nanocomposite were investigated by X-ray diffraction (XRD) and transmission electron microscopy (TEM), demonstrating the preparation of crystalline spherical nanoparticles. The effects of some operational conditions on the phoodegradation of 4-bromophenol  and 2,4,6-tribromophenol was investigated. For maximal photodegradation of 4-bromophenol(98%)  and 2,4,6-tribromophenol (97%) the optimum operational conditions should be as follows:  1,2 mg/ l polystyrene/ SnO2 nanocomposite concentration, 760 mg/l 4-bromophenol  and 2,4,6-tribromophenol concentrations, 56 W/m2 sun light power, ph= 8,0, temperature= 35 Oc, photodegradation time= 20 min. The nanocomposite was reused . After 45 time utilization the pollutant yields was recorded as 89% and 86%.

Biography:

Prof. Dr. Delia Teresa Sponza is currently working as a professor at Dokuz Eylul 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.