电生成Fenton试剂光催化降解孔雀石绿的研究陈玉峰

4　5环境工程学报Vol.4,No.520105ChineseJournalofEnvironmentalEngineeringMay2010Fenton陈玉峰1,2　吴英绵1　陈　震2(1.,050081;2.,350007)　　,Fenton,:Fenton,20min98%,40minCOD80%,、-Fenton,Fenton,。　　Fenton　　　　X703.1　　　A　　　1673-9108(2010)05-1096-05Studyofphotocatalyticdegradationofmalachitegreenbyelectro-generatedFentonreagentChenYufeng1,2　WuYingmian1　ChenZhen2(1.DepartmentofChemicalEngineering,ShijiazhuangVocationalTechnologyInstitute,Shijiazhuang050081,China;2.CollegeofChemistryandMaterialsScience,FujianNormalUniversity,Fuzhou350007,China)Abstract　Inordertoimprovedyewastewatertreatmentefficiency,thisstudydealswiththedegradationofmalachitegreensimulatewastewaterbyelectro-generatedFentonreagentinaphotocatalyticoxidationsystem.Comparedwithnon-illumination,itwasfoundthatilluminationcansignificantlyacceleratethedegradationrateofdyewastewatercontainingmalachitegreen.ThebestremovalrateofCODin40minanddecolorizationratein20minwere80%and98%,respectively.AlsoIR,UV-visiblespectrumwereusedtoinvestigatethesynergybe-tweenilluminationandelectro-generatedFentonreagent.Ontheotherhand,thereactionmechanismofdegrada-tionofmalachitegreeninthissystemwasdiscussed.Theresultsshowthatthecombinationofphotocatalyticandelectrochemicaloxidationtechnologyachievedgoodresultsforthetreatmentofmalachitegreenwastewater.Keywords　photocatalysis;Fentonreagent;electrochemistry;degradation;malachitegreen:(2006H015);(08YQ006):2009-03-03;:2009-05-22:(1978～),,,,。E-mail:[e-mail]　　,,。80%～90%,80%～90%[1,2],。,Fenton(UV),[3～5]。,Fenton,,H2O2。Fenton、,。Fenton,(MG),-、、COD。:。,,、5:Fenton。1　1.1　Fenton,,,Na2SO4,,,[6]。(),,-,1。1　Fig.1　Schematicofexperimentalequipment1.2　,。200mg/L,,,。1.3　1.3.1　红外光谱分析AVATAR360()、、,。1.3.2　紫外-可见光谱分析751GW,。,。CARY50BIO-(Beckman,USA)-。1.4　CODGB119414-1989COD,。2　2.1　-250W,(10)-,2。2:616、440320nm,616nm,[7],260nm300nm2,[8]。,,,。616nm[9],,,,[10],。2　250W-Fig.2　UV-Visspectrumofmalachitegreenilluminatedatdifferenttimes10974,3,,20min,40min。2.2　3(616nm)。3,,,,20min99.3%,40min98.7%。(1):D%=A0-AA0×100%(1),1。3　Fig.3　Visibleabsorbencyofmalachitegreenunderdifferentconditions1　Table1　Decolorizationrateofmalachitegreenatdifferenttimes(min)03581015202530354045250W033.863.481.598.199.399.399.499.499.599.599.6010.015.923.343.459.773.475.686.398.198.698.7　　,,,3,,。-,,,,Fe3+,,·OH,。2.3　2-lnAt,4。,,,.:K(MG)250≈4.5×10-3s-1;K(MG)No≈8.42×10-4s-1。4　Fig.4　Reactionorderofmalachitegreendegradation2.4　(5)。a10985:Fenton109947,,COD。250W20minCOD80%,40min。。Fenton。3　　Fenton,:20minCOD80%,98%。,。-、,。,,、、,。[1]NerudF.,BaldrianP.,GabrielJ.,etal.DecolorizationofsyntheticdyesbytheFentonreagentandtheCu/pyri-dine/H2O2system.Chemosphere,2001,44(5):957～961[2]Barrera-DiazC.,Urena-NunezF.,CamposE.,etal.Acombinedelectrochemical-irradiationtreatmentofhighlycoloredandpollutedindustrialwastewater.RadiationPhys-icsandChemistry,2003,67(5):657～662[3]GernjakW.,KrutzlerT.,GlaserA.,etal.Photo-Fentontreatmentofwatercontainingnaturalphenolicpollutants.Chemosphere,2003,50(1):71～78[4]Shyh-FangK.,Chih-HsiangL.,Shei-TueP.Decoloriza-tionoftextilewastewaterbyphoto-Fentonoxidationtechnol-ogy.Chemosphere,2000,41(8):1287～1294[5]McginnisB.D.,AdamsV.D.,MiddlebrooksE.J.Deg-radationofethyleneglycolinphoto-Fentonsystems.Wat.Res.,2000,34(8):2346～2354[6]ChenZhen,ZhengXi,ChenRiyao,etal.Fentonreagentgeneratedinelectrolysiscellanditsusageindegradationanddecolorizationofdyes.ChemicalResearchinChineseUniversities,2002,18(1):34～37[7]JohnGriffiths.ColourandConstitutionofOrganicMole-cules.London:AcademicPress,1976.227～228[8]..:,1991.163～164[9],,..:,1994.364～366[10]..:,2003.32～34[11],,..:,1990.208～293[12]KazuoNakamolo.InfraredSpectraofInorganicandCoor-dinationCompounds.NewYork:WileySonsInc.,1986.134～142[13]KaiqunW.,YindeX.,JincaiZ.,etal.Photo-Fentondegradationofadyeundervisiblelightirradiation.Jour-nalofMolecularCatalysisA:Chemical,1999,144(1):77～841100