IrO2Ta2O5石墨电Fenton降解对硝基酚的研究杨志新

IrO2T/a2O5-石墨电Fenton降解对硝基酚的研究杨志新,　袁松虎,　陆晓华(,　430074)　:IrO2/Ta2O5,,Fe2+,Fenton(4NP)。:0.3A,Na2SO43g/L,Fe2+1mmoL/L,40mL/min,pH5.30100mg/L4NP2h,COD84%。IrO2/Ta2O5Pt、PbO2,。:IrO2/Ta2O5;　Fenton;　:X132　　:A　　:1003-6504(2005)03-0022-03　　、、,。,,、、,,。FentonFenton[1]。,Pt、PbO2()。1995BeerTiIrO2,。Ti,[2]。、,O2Fenton,[3],O2,Fenton。,TiFen-ton,O2H2O2,“”“”,[4],IrO2/Ti(),Fenton。,IrO2/Ta2O5[2],,Fe2+,Na2SO4Fenton4NP,。。1　1.1　1.1.1　WT-1COD(:(1976-),,,。),WYK-5010B2,Cary50ProbeUV-VisibleSpectropho-tometer,78-1,ACO,ShangPingFA2004,pHS-25pH,,IrO2/Ta2O5(2.2cm×7.8cm),(2.5cm×5cm)。1.1.2　(A.R),(A.R),(A.R)。1.2　1.0000g4NP,1000mL1000mg/L,。FeSO47H2ONa2SO4。1.3　125mL,NaOHH2SO4pH,,(),5mL,NaOHpH8,。1.4　COD:WT-1CODCOD。2　2.1　4NP2.1.1　Fe2+Fenton,,Fe2+[5-6],0.1A,4NP100mg/L,Na2SO41g/L,40mL/min,pH=3.67,1mmoL/LFe2+22　　28　3　20055DOI:牨牥牨牴牰牱牪牤jcnki牨牥牥牫牰牭牥牬牪牥牥牭牥牫牥牨牥COD,1。　Fe2+,,COD,[7-8],,H2O2:O2+2H++2e-=H2O2ψΘ=0.6825V(1)H2O2Fe2+FentonOH:Fe2++H2O2=OH+OH-+Fe3+(2)OH,COD。(1)1mmoL/LFe2+;(2)Fe2+。2.1.2　0.1A,4NP100mg/L,Na2SO41g/L,Fe2+1mmoL/L,pH=3.67,COD(2)。2hCOD53%,:,[4]IrO2/Ta2O54NP,[3],:4OH--4e=2H2O+O2(3)(1)H2O2Fenton[3]。,IrO2/Ta2O5H2O2。。,O2,(1),H2O2,COD。　2.1.3　,Na2SO43g/L,4NP100mg/L,Fe2+1mmoL/L,40mL/min,pH=3.67,(,)0.1A、0.3A、0.45A,3。　3,,COD,,H2O2,0.10A0.30ACOD,,,0.45A,COD,,0.30A。2.1.4　0.3A,4NP100mg/L,Fe2+1mmoL/L,40mL/min,pH=3.67,Na2SO43g/L、6g/L、10g/L,4。　4,,,COD,[5],10g/L,COD,、4NP、,,4NP、。,3g/L。2.1.5　pH0.3A,4NP100mg/L,Na2SO43g/L,Fe2+1mmoL/L,40mL/min23IrO2/Ta2O5-Fenton　,,pH,5。　5,,pH,COD,pH7.15,COD。,,,pH;,FentonpH,pH,Fe2++H2O2Fe3++OH+OH-[9],pH=5.30pH。2.1.6　:0.3A,Na2SO43g/L,Fe2+1mmoL/L,40mL/min,pH5.30100mg/L4NP,6。　6,60min,,,90min。2.2　PbO2Pt,PbO2,[2]。IrO2/Ta2O5,、,Fenton。Fenton,O2H2O2,Fe2+Fenton,,Na2SO4FentonCOD84%,[10]PbO2--Fenton4NPCOD76.5%,,IrO2/Ta2O5-Fen-ton,IrO2/Ta2O5,。3　(1)Fenton:0.3A,Na2SO43g/L,Fe2+1mmoL/L,40mL/min,pH5.30,100mg/L4NP2h,COD84%。(2)IrO2/Ta2O5,、,Fenton,,IrO2/Ta2O5-Fenton,。[][1]　,,.Fenton[J].,2002,21(7):440-441.[2]　,,,.Ti[J].,1999,28(5):1-3.[3]　BertaUtset,JosepGarcia,JoanCasa-do,etal.Replace-mentofH2O2byO2inFentonandphoto-Fentonreactions[J].Chemosphere,2000,1187-1192.[4]　CesarPulgarin,NevenkaAdler,PaulPeringer,etal.Electrochemicaldetoxificationofa1,4-benzoquinoneso-lutioninwastewatertreatment[J].WaterResearch,1994,28(4):887-893.[5]　,.[J].,2002,58(1):40,44.[6]　EnricBrillas,EvaMur,RoserSauleda,etal.Anilinemin-eralizationbyAOPs:anodicoxidation,photocatalysis,e-lectro-Fentonandphotoelectro-Fentonprocesses[J].Ap-pliedCatalysis,1998,16:31-42.[7]　,.[J].(),2000,3:41-44.[8]　,,,.Fenton[J].,2001,2(4):72-76.[9]　,,,.Fenton[J].,2001,84(3):24-25.[10],,,.[J].,2002,23(4):376-380.(2004-03-24;2004-05-31)24　　28　3　20055AbstractID:1003-6504(2005)03-0011-03-EAAbstract:Thispaperrelatedtoastudyofremovingnitritescon-tainedinmicro-pollutedsourcewaterofareservoirinBeijing.Thebio-contacttechnologywasusedandtheresultsshowedthatupto98%removalofNO-2-Nhadbeenobtained.Fac-torsaffectingnitritesremovingwereinvestigated,suchastem-peratureandinitialconcentrationsofammoniaandnitritesinthewater.Keywords:micro-pollutedsourcewater;NO-2-N;bio-contacttechnologyMathematicalModelingofPressureDropinDesigningPneumaticCyclonesWUKe-ming1,PANLiu-ming1,F.Concha2(1.DepartmentofEnvironmentalandSafetyEngineering,WuhanUniversityofScienceandTechnology,Wuhan430081;2.UniversidaddeConcepcion,Casillo53-C,Chile)AbstractID:1003-6504(2005)03-0013-03-EAAbstract:Thefactorsthatcontributetothepressuredropareanalyzed.Themathematicalmodelsofpneumaticcycloneareconstructed.Thetroubleissolvedtocomputethepressuredropindesigningpneumaticcyclones,andthemodelsarecomparedwithactualexamplesinthedesign.Theverificationofthemod-elingprovestheeffectivenessforthedesign.Keywords:pneumaticcyclone;pressuredrop;design;mathe-maticalmodelExperimentalStudyonSimultaneousNitrification/DenitrificationbyanAerobicBiofilmSystemZHANGPeng,SUHong(CollegeofEnvironmentandMaterialEngineering,YantaiUniversity,Yantai264025)AbstractID:1003-6504(2005)03-0016-02-EAAbstract:TheremovalofCODmnandnitrogeninbiofilmsystemwasstudiedwithpHcontrolledin7.0～7.5andtemperaturein20℃～28℃intheexperiment.TheimpactofvariousDO,hy-draulicretentiontimeandratioofC/NonremovalefficiencyofTNwasdiscussed.Resultsshowedthatsimultaneousnitrifica-tion/denitrificationisfeasibleinbiofilmsystem,withremovalefficiencyofTNupto53.6%whenC/Nratioof8:1,hydraulicretentiontimeof6handDO0.5～1.0mg/L.Keywords:simultaneousnitrification/denitrification;biofilm;hydraulicretentiontime;C/Nratio;DOPhotocatalyticDegradationof4BSDyesUsingTiO2/SerpentiniteXUMin,XURi-hong,LILi-qiong(SchoolofBiologicalandChemicalEngineering,GuangzhouUniversity,Guangzhou510405)AbstractID:1003-6504(2005)03-0018-02-EAAbstract:TiO2/serpentinitewasobtainedbyhydrolysis-precipi-tatingmethodusingTiOSO4andnaturalserpentinite.Thepho-tocatalyticdegradationoforganicdyes4BSwerestudiedinTiO2/serpentinite.ResultsshowedthedyeswereremarkablydecoloredinpH2-4andtemperature500℃undera500whighpressuremercurylamp.Keywords:TiOSO4;serpentinite;TiO2photocatalyticdegrada-tionExperimentalStudyonPhosphorusRemovalinSecondaryEffluentwithMicro-flocculationFibreFilter