1三维三相流化床电极处理苯胺实验研究

(,116024)pHCOD,,,,Treatmentofanilineusingthree2dimensionalthree2phasefluidizedbedelectrodeYangSongLiYumingZhouJitiHuJun(SchoolofEnvironmentalandBiologicalScienceandTechnology,DalianUniversityofTechnology,Dalian116024)AbstractTreatmentofanilineusinganovelelectrochemicalreactor,three2dimensionalthree2phaseflu2idizedbedelectrode,wasinvestigatedexperimentally.Theinfluenceofairflowrate,appliedvoltage,Na2SO4concentration,pHvalue,anilineconcentration,treatmenttimehasbeeninvestigated,andthereasonswereil2lustratedpreliminarily.Theresultsshowthat,anilinecanbedegradatedcompletelyunderspecificconditionsusingthree2dimensionalthree2phasefluidizedbedelectrode.Itwasalsoprovedthatsomeintermediateswereproducedduringelectrolysis.Keywordsthree2dimensionalthree2phasefluidizedbedelectrode;aniline;oxidation;intermediate:2003-07-03;:2003-09-23:(1977),,,:E2mail:[e-mail]1,,;,,,[1][2,3][4],[5,6],[7],;,22.1WMXCOD();V25602(Japan);PHS225();;;;;();2mm10mm();();(56Vol.5,No.620046TechniquesandEquipmentforEnvironmentalPollutionControlJun.2004©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.);98%COD;pH;2.21,2,1Fig11Experimentalflowchartofthree2dimensionalthree2phasefluidizedbedelectrode2.3,70mL,,98%30%pH,pH=7,500mL33.12:(1),,,,;(2),2[8],,:O2+2H++2e-H2O2(1):O2+H2O+2e-HO-2+OH-(2)HO-2+H2O+2e-H2O2+OH-(3),COD2,COD,40L/h,,COD2,,,,,,,COD:COD97418mg/L,1g/L,6V,60min2Fig12Theinfluenceofairflowrateonanilinedegradation3.2,,,;,,,,[9]COD33,05V,445©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(4)2H2O+2e-H2+2OH-(5):COD97418mg/L,1g/L,40L/h,60min3Fig13Theinfluenceofappliedvoltageonanilinedegradation3.3,,,,,,NaCl,,,,,,()[10]2Cl-Cl2+2e-(6)Cl2+H2OHCl+HClO(7)HClO+OH-H2O+ClO-(8)4Na2SO4COD4,Na2SO401000mg/L,COD2213%5111%Na2SO41000mg/L,,COD,,:COD97418mg/L,40L/h,5V,60min4Fig14Theinfluenceofsaltconcentrationonanilinedegradation3.45COD,COD400mg/L,COD,COD,COD,,COD3.5pH6pHCOD6,pHCOD,52%,COD,pH=3546:©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,,H2O2Fenton,OH,FentonpH=3[11]pH=3COD,,,[12]CODFe+2H+=Fe2++H2(9)Fe2++H2O2+H+Fe3++OH+H2O(10)3.6COD3COD7,7,3,COD,,COD,100min70%;;,180min10%,,COD:COD97418mg/L,1g/L,5V,40L/h,60min6pHFig16TheinfluenceofpHvalueonanilinedegradation,,,,,,,,,,,,:COD97418mg/L,1g/L,5V,40L/h,pH=97Fig17Theinfluenceofreactiontimeonanilinedegradation,COD500mL,COD645©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(200400nm),88,280nm,,180min,COD200mg/L,1;210min;330min;460min;590min;6120min;7180min82Fig18Scanningbeamofanilinesolutionaftertreatmentofelectrolysisbyultraviolet2visiblespectrophotometer4(1),(2)40L/h,5V,1g/L,pH9,100min,COD70%(3)180min,COD10%,,COD70%,COD(4)[1]RajeshwarK.,IbanezJ.G.,SwainG.M.Electro2chemistryandtheenvironment.J.Appl.Electrochem.,1994,24:10771091[2]BlsangJ1M.Electrochemicaltreatmentofwastesolutioncontainingferroussulfatebyanodicoxidationusinganun2dividedreactor.J.Appl.Electrochem.,2000,30:399403[3]EliDeabM1S1,SalehM1M1,etal.Electrochemicalremovalofleadionsfromflowingelectrolytesusingpackdbedelectrodes.J.Electrochem.Soc.,1999,29:146208[4]BelmantC1,CognetP1,BerlanJ1,etal.Applicationofanelectrochemicalpulsedflowreactortoelectroorganicsyn2thesis1Part:Reductionofacetophenone.J.Appl.Elec2trochem1,1998,28:185189[5]Coin,R.J.,Niksa,M.J.,Elyanow,D.I.Wastewatertreatmentenhancedbyelectrochemistry.Environ.Prog.,1996,15:122127[6]Simonsson,D.Electrochemistryforacleanerenviron2ment.Chem.Soc.Rev.,1997,26(3):181189[7]Boscoletto,A.B.,Gottarai,F.,Milan,L.,etal.Elec2trochemicaltreatmentofbisphenol2Acontainingwaste2wa2ters.J.Appl.Electrochem.,1994,24:10521058[8]Foller,P.C.,Bombard,R.T.Processesfortheproduc2tionofmixturesofcausticsodaandhydrogenperoxideviathereductionofoxygen.J.Appl.Electrochem.,1995,25:613627[9]..:,19931117302[10]StuckiS1,KotzR1,Carcer,etal.Electrochemicalwaste2watertreatmentusinghighovervoltageanodes.Part2:Anodeperformanceandapplications.J.Appl.Elec2trochem.,1991,21(2):99104[11],.UV/H2O2/.,1999,19(6):526529[12],,,.SnO2/Ti.,2001,17(7):609613746:©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.