电催化氧化技术处理苯酚废水研究李天成

11　120052电化学ELECTROCHEMISTRYVo.l11　No.1Feb.2005:1006-3471(2005)01-0101-04:2003-12-16,,2004-02-22,*:Tel:[phone],E-mail:[e-mail](20040350092)李天成,朱慎林*(,,100084):　,.、SnO2/Ti,、,5～6V,.:SnO2/Ti,COD100mgL-1,0.5mgL-1.:　;;;:　X781.1　　　　　　　　　　　　　　:　A　　、、,(POPs),[1].,,[2].,.,“”.,,,.,,,[3].,、、、.,.、、,.,.、.1　Fig.1　Schematicdiagramofthreeelectrodessystem1)potentiostat,2)electrochemicalmeasuringsystem,3)counterelectrode:stainlesssteel,4)beaker,5)referencee-lectrode:SCE,6)magneticstirrer,7)workingelectrode:stainlesssteelorgraphite,8)magneticspool1　、SnO2/Ti,,,1.,,,TD3691TD73000DOI:牨牥牨牫牪牥牳牤jelectrochem牪牥牥牭牥牨牥牪牨2　Fig.2　TheflowchartofPhenolwastewatertreatedbyelec-trochemicaloxidation1)directcurrentresource,2)anodes,3)cathodes,4)electrochemicalreactor.2,,,.2,2L,20cm×8cm(8).,,.2　2.1　3、SnO2/Ti.,,300mV(3a),,,.1200mV(3b),,.,,,,,.,SnO2/Ti,1500mV(3c),,,.2.2　1(),3Fig.3Polarizedcurvesfordifferentanodematerialindistilledwaterworkingworkingelectrode:a)stainlesssteel,b)graphite,c)SnO2/Ti,counterelectrode:stainlesssteel,referenceelectrode:SCE.　　,,5～6V,8h,COD740mgL-1102电　化　学　　　　　　　　　　　　　　　20051　(pH=7.0)Tab.1　Phenolwastewatertreatingdatawithdifferentanodematerial(pH=7.0)InitialCOD/mgL-1AnodematerialNa2SO4/gE/VI/AReactivetime/hFinalCOD/mgL-1Finalphenolconcentration/mgL-1744.1Stainlesssteel28.25.42.08110.70.2838.6Graphite28.25.32.0878.70.2110.7mgL-1.,0.5mgL-1,,.:1)CO2H2O;2),,,Fenton,OH.,.,,COD100mgL-1,,COD.,,,“”,-.,5～6V,8h,COD838.6mgL-1COD78.7mgL-1.,.,,.,,,,CO2H2O;,OH,.,,COD,0.5mgL-1.COD.,,、,、.　　SnO2/Ti,.3　　:SnO2/Ti.,,.COD,,.(References):[1]　ZhouMinghua,WuZucheng,WangDahu.iAdvancedelectrochemicaloxidationprocessfortreatmentoftoxicandbiorefractoryorganicwastewater[J].ChemicalRe-actionEngineeringandTechnology,2001,17(3):263～271.[2]　ComninellisCh,PulgarinC.ElectrochemicaloxidationofphenolforwastewatertreatmentusingSnO2anodes[J].JournalofAppliedElectrochemistry,1993,23:108～112.[3]　WuZucheng,ZhouMinghua.Partialdegradationofphe-nolbyadvancedelectrochemicaloxidationprocess[J].EnvironSci.Techno.l,2001,35:2698～2703.1031　　　　　　　　　　　　:ResearchonPhenolWastewaterTreatmentbyElectrochemicalOxidationLITian-cheng,ZHUShen-lin(DepartmentofChemicalEngineering,TsinghuaUniversity,Beijing100084,China)Abstract:Electrochemicaloxidationisaneffectivetechnologyforthephenolwastewatertreatment,andtheanodepropertiesareimportanttotheelectrochemicaloxidationefficiency.Theover-potentialsofoxygenevolu-tionhavebeenmeasuredforthestainlesssteel,feasiblegraphiteandSnO2/Tianoderespectively.Moreover,thesyntheticphenolwastewaterwastreatedbytheelectrochemicaloxidationwiththestainlesssteelorfeasiblegraph-iteanodes.Theexperimentalresultsshowedthattheorderoftheover-potentialisSnO2/Tigraphitestain-lesssteel;meanwhile,theCODvaluesofpurifiedwaterwereapproachingtoorlessthan100mgL-1,andthephenolconcentrationsinthepurifiedwaterwerebelow0.5mgL-1.Keywords:Anodepolarizedcurve,Over-potential,Electrochemicaloxidation,Phenol104电　化　学　　　　　　　　　　　　　　　2005