title: Perfluorooctanoic Acid Degradation Using UV-Persulfate Process: Modeling of the Degradation and Chlorate Formation.
abstract: In this study, we investigated the destruction and by-product formation of perfluorooctanoic acid (PFOA) using ultraviolet light and persulfate (UV-PS). Additionally, we developed a first-principles kinetic model to simulate both PFOA destruction and by-product and chlorate (ClO3(-)) formation in ultrapure water (UW), surface water (SW), and wastewater (WW). PFOA degradation was significantly suppressed in the presence of chloride and carbonate species and did not occur until all the chloride was converted to ClO3(-) in UW and for low DOC concentrations in SW. The model was able to simulate the PS decay, pH changes, radical concentrations, and ClO3(-) formation for UW and SW. However, our model was unable to simulate PFOA degradation well in WW, possibly from PS activation by NOM, which in turn produced sulfate radicals.
authors.affiliation: College of Environmental Science and Engineering, Tongji University , Shanghai 200092, China.|School of Civil and Environmental Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors.forename: Yajie
authors.initials: Y
authors.lastname: Qian
authors.affiliation: School of Civil and Environmental Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors.forename: Xin
authors.initials: X
authors.lastname: Guo
authors.affiliation: College of Environmental Science and Engineering, Tongji University , Shanghai 200092, China.
authors.forename: Yalei
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: School of Civil and Environmental Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors.forename: Yue
authors.initials: Y
authors.lastname: Peng
authors.affiliation: School of Civil and Environmental Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors.forename: Peizhe
authors.initials: P
authors.lastname: Sun
authors.affiliation: School of Civil and Environmental Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors.forename: Ching-Hua
authors.initials: CH
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University , Beijing 100875, China.
authors.forename: Junfeng
authors.initials: J
authors.lastname: Niu
authors.affiliation: College of Environmental Science and Engineering, Tongji University , Shanghai 200092, China.
authors.forename: Xuefei
authors.initials: X
authors.lastname: Zhou
authors.affiliation: School of Civil and Environmental Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors.forename: John C
authors.initials: JC
authors.lastname: Crittenden
mesh_terms: D002210:Caprylates / Q000737:chemistry* / Q000528:radiation effects; D002254:Carbonates; D002704:Chlorates; D002712:Chlorides; D005466:Fluorocarbons / Q000737:chemistry* / Q000528:radiation effects; D007700:Kinetics; D008956:Models, Chemical; D010782:Photolysis; D013431:Sulfates / Q000737:chemistry*; D014466:Ultraviolet Rays; D014867:Water; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D002210:Caprylates; D002254:Carbonates; D002704:Chlorates; D002712:Chlorides; D005466:Fluorocarbons; D013431:Sulfates; D014874:Water Pollutants, Chemical; C069025:sulfate radical; D014867:Water; C023036:perfluorooctanoic acid