title: Modeling of quantitative effects of water components on the photocatalytic degradation of 17α-ethynylestradiol in a modified flat plate serpentine reactor.
abstract: The effect of water components on the photocatalytic degradation of organic pollutants was incompletely understood, especially in the case of hydroxyl radical (•OH) generation and scavenging. Previous studies have used various methods to determine the rate constants for the reactions between •OH and water components, but the interactions between water components were not taken into concern. In this study, a sequential relative rate technique was used to investigate the effects of water components on the rates of •OH generation and EE2 degradation in a modified flat plate serpentine reactor, including NO₃(-), H₂PO₄(-), SO₄(2-), CO₃(2-), Cl(-), Na(+), Fe(3+), dissolved organic matter (DOM) etc. The results reflected that NO₃(-) and DOM accelerated the photodegradation of 17α-ethynylestradiol (EE2) (3.2% and 21.2%, respectively). Cl(-) and Fe(3+) inhibited that process (5.2% and 3.1%, respectively). Finally, a model for the photocatalytic degradation of EE2 was developed for the first time, taking the obtained rate constants, catalyst concentrations, flow velocities and light intensities into concern. A good agreement was observed between the model and experimental profiles.
authors.affiliation: Key Laboratory of Integrated Regulation and Resource Development of Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Xi Kang Road #1, Nanjing 210098, PR China.
authors.forename: Dawei
authors.initials: D
authors.lastname: Wang
authors.affiliation: Key Laboratory of Integrated Regulation and Resource Development of Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Xi Kang Road #1, Nanjing 210098, PR China. Electronic address: envly@hhu.edu.com.
authors.forename: Yi
authors.initials: Y
authors.lastname: Li
authors.affiliation: Jiangsu Provincial Academy of Environmental Science, Nanjing, 210036, PR China.
authors.forename: Guoping
authors.initials: G
authors.lastname: Li
authors.affiliation: Key Laboratory of Integrated Regulation and Resource Development of Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Xi Kang Road #1, Nanjing 210098, PR China.
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.affiliation: Key Laboratory of Integrated Regulation and Resource Development of Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Xi Kang Road #1, Nanjing 210098, PR China. Electronic address: 1223zhangwenlong@163.com.
authors.forename: Wenlong
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Integrated Regulation and Resource Development of Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Xi Kang Road #1, Nanjing 210098, PR China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Wang
mesh_terms: D000838:Anions / Q000737:chemistry; D017632:Asbestos, Serpentine; D001578:Benzopyrans / Q000737:chemistry; D002384:Catalysis; D004997:Ethinyl Estradiol / Q000737:chemistry*; D008027:Light; D008956:Models, Chemical; D009584:Nitrogen / Q000737:chemistry; D010758:Phosphorus / Q000737:chemistry; D010782:Photolysis; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects; D014865:Waste Disposal, Fluid / Q000379:methods; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D000838:Anions; D017632:Asbestos, Serpentine; D001578:Benzopyrans; D014874:Water Pollutants, Chemical; D014867:Water; C009495:titanium dioxide; D010758:Phosphorus; D004997:Ethinyl Estradiol; D014025:Titanium; D009584:Nitrogen; C005023:fulvic acid