title: Facile, effective, and environment-friendly degradation of sulfamonomethoxine in aqueous solution with the aid of a UV/Oxone oxidative process.
abstract: The degradation of sulfamonomethoxine (SMM) in the aqueous environment by the combination of UV illumination and Oxone has been studied. Experimental results indicated that the UV illumination can effectively activate Oxone to produce sulfate-free radicals (SO4 (-•)). When 10 mmol L(-1) Oxone was added, 96.78 % removal of SMM (5 mg L(-1)) was achieved within 90 min. Mineralization of SMM was investigated by measuring the total organic carbon, which decreased by 89.01 % after 90 min reaction. Six intermediate compounds generated during the SMM degradation were identified with the aid of liquid chromatography and mass spectroscopy, combined with proton nuclear magnetic resonance spectroscopy. A general reaction pathway for the degradation of SMM was proposed, where the presence of SO4 (-•) remained crucial during the degradation process.
authors.affiliation: Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education; Henan Key Laboratory for Environmental Pollution Control; School of Environment, Henan Normal University, Xinxiang, Henan province, 453007, People's Republic of China.
authors.forename: Yunqing
authors.initials: Y
authors.lastname: Pi
authors.forename: Jinglan
authors.initials: J
authors.lastname: Feng
authors.forename: Jingyu
authors.initials: J
authors.lastname: Sun
authors.forename: Jianhui
authors.initials: J
authors.lastname: Sun
mesh_terms: D010084:Oxidation-Reduction; D010782:Photolysis; D013422:Sulfamonomethoxine / Q000032:analysis / Q000737:chemistry*; D013431:Sulfates / Q000737:chemistry; D013464:Sulfuric Acids / Q000737:chemistry*; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid / Q000379:methods; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry*
chemical_list: D013422:Sulfamonomethoxine; D013431:Sulfates; D013464:Sulfuric Acids; D062065:Wastewater; D014874:Water Pollutants, Chemical; C048813:potassium peroxymonosulfuric acid