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《1. Degradation of Diclofenac by Advanced Oxidation and Reduction Processes Kinetic Studies, Degradation Pathways and Toxicity Assessments》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、waterresearch47(2013)1909e1918Availableonlineatwww.sciencedirect.comjournalhomepage:www.elsevier.com/locate/watresDegradationofDiclofenacbyAdvancedOxidationandReductionProcesses:KineticStudies,DegradationPathwaysandToxicityAssessmentsabba,bcb,HuiYu,ErNie,JunXu,ShuwenYan,WilliamJ.Cooper,WeihuaS
2、ong*aChineseResearchAcademyofEnvironmentalSciences,Beijing,100012,P.R.ChinabDepartmentofEnvironmentalScience&Engineering,FudanUniversity,Shanghai200433,P.R.ChinacUrbanWaterResearchCenter,DepartmentofCivilandEnvironmentalEngineering,UniversityofCalifornia,Irvine,CA92697,UnitedStatesarticleinfoa
3、bstractArticlehistory:ManypharmaceuticalcompoundsandmetabolitesarefoundinsurfaceandgroundwatersReceived20November2012suggestingtheirineffectiveremovalbyconventionalwastewatertreatmenttechnologies.ReceivedinrevisedformAdvancedoxidation/reductionprocesses(AO/RPs),whichutilizefreeradicalreactions
4、to31December2012directlydegradechemicalcontaminants,arealternativestotraditionalwatertreatment.Accepted9January2013ThisstudyreportstheabsoluterateconstantsforreactionofdiclofenacsodiumandmodelAvailableonline18January2013compound(2,6-dichloraniline)withthetwomajorAO/RPradicals:thehydroxylradica
5、l(OH)andhydratedelectron(e).Thebimolecularreactionrateconstants(M1s1)foraq99Keywords:diclofenacforOHwas(9.290.11)10,andforeaqwas(1.530.03)10.ToprovidePharmaceuticalsabetterunderstandingofthedecompositionoftheintermediateradicalsproducedbyDiclofenachydroxylradicalreactions,transientab
6、sorptionspectraareobservedfrom1e250ms.InAdvancedOxidation/Reductionaddition,preliminarydegradationmechanismsandmajorproductswereelucidatedusing60ProcessesCog-irradiationandLC-MS.ThetoxicityofproductswasevaluatedusingluminescentKineticstudiesbacteria.Thesedataarerequiredforbothevaluatingthepote
7、ntialuseofAO/RPsfortheDegradationmechanismdestructionofthesecompoundsandforstudiesoftheirfateandtransportinsurfaceToxicityassessmentswaterswhereradicalchemistrymaybeimportantinassessingtheirlifetime.ª2013ElsevierLtd.Allrightsreserved.1.