Degradation-kinetics-and-mechanism-of-emerging-contaminants-in-water-by-dielectric-barrier-discharge-non-thermal-plasma-The-case-of-17-Estradiol_2013_

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1、ChemicalEngineeringJournal228(2013)790–798ContentslistsavailableatSciVerseScienceDirectChemicalEngineeringJournaljournalhomepage:www.elsevier.com/locate/cejDegradationkineticsandmechanismofemergingcontaminantsinwaterbydielectricbarrierdischargenon-thermalplasma:Thecaseof17b-

2、Estradiolaaba,⇑aLihongGao,LeiSun,ShungangWan,ZebinYu,MingjieLiaSchoolofEnvironment,GuangxiUniversity,Nanning530004,PRChinabInstituteofUrbanEnvironment,ChineseAcademyofSciences,Xiamen361021,PRChinahighlightsDielectricbarrierdischargeiseffecttechnologytodegrade17b-Estradiol.

3、Theplasmawascreatedatthegas–liquidinterfaceinpulsedmode.Thekeyparametershavesignificanteffectonthedegradationof17b-Estradiol.Thedegradationprocesscanbedescribedbythefirstorderkineticmodel.Apossibledegradationmechanismof17b-Estradiolwereproposedtentatively.articleinfoabstrac

4、tArticlehistory:Atypicalendocrinedisruptingchemical17b-Estradiol(E2)inaqueoussolutionwasdecomposedbyusingReceived17December2012dielectricbarrierdischargenon-thermalplasma(DBD)createdatthegas–liquidinterfaceinpulsedmode.Receivedinrevisedform16May2013Theresultsshowedthepeakvol

5、tage,E2initialconcentration,initialpHvalueandaqueoussolventofdif-Accepted18May2013ferentcharacteristicshavesignificanteffectontheremovalefficiencyandthedegradationratesofE2.Availableonline29May2013After30minplasmatreatment,100%removalefficiencywasachievedatE2concentrationof100l

6、g/Lwithapeakvoltage12kVandpH5.6.RadicalscavengerandcomplexenvironmentalmatrixcouldalsoKeywords:beresponsibleforperformancereductioninthedegradationofE2byDBD.TheintermediateproductsEndocrinedisruptingchemicalsweredeterminedbyliquidchromatography–massspectrometrytechnique(LC–M

7、S).Basedontheinter-17b-EstradiolDielectricbarrierdischargemediateproductsidentifiedinthestudy,thepossiblemechanismsfortheplasmatreatmentofE2inKineticsultrapurewaterbyDBDwerealsoproposed.DegradationmechanismÓ2013ElsevierB.V.Allrightsreserved.1.Introductionreproductive[5].Among

8、theEDCs,17b-Estradiol(E2)isthenaturalandmostpotentandtoxicintracellularestr