二维和三维电极法催化降解染料废水

2952002JOURNALOFBEIJINGUNIVERSITYOFCHEMICALTECHNOLOGYVol.29,No.520023(,100029):B,,,,,,(OH),(AOP):;;;:X703:2001211223:(2002BA313B01):,1944,3,,,[1],,,,,,,,[2],B,1111B,50mg/L,Na2SO4,11250mLWYK2303B2DR/4000U2(HACH)1Cr18Ni9Ti(20mm25mm)B(,);Na2SO4();NaOH();H2SO4();();();();();()113,,4mm,11Fig.1Schematicofelectrocatalyticsystem11411411,DR/4000U21141230mL,,,,,,DR/4000U546nm:=A0-A1A0100%,A0;A111413OHOH[3]:,,OH2,32,2510nm2,32,OH22112111150mg/L,1010V0110A,1Cr18Ni9Ti2h,2,2,1Cr18Ni9Ti1.;2.2;3.;4.222Fig.2UV2Visspectrumofwastewaterafterdifferenttreatments2,2h,,,:,21112,510V0105A0110A,,33Fig.3Effectofelectricitystrengthondegradationofwastewater,0105A0110A,,,,,0110A0105A,21113510710102030V,,0110A,,,,44Fig.4Effectofvoltageondegradationofwastewater4,,,2h,535:90%,,,,,,,,,,212,,,,,,,,,5V0105A,,55Fig.5Effectofthree2dimensionelectrodeondegradationofwastewater,,,1h94162%;,2h92139%,,,13g,710V0105A,6,,3,95%1203020min6Fig.6Effectofporouselectrodeondegradationofwastewater213,,,,,,,,OH,77OHFig.7GenerationofOHwithtime7,,OH,,,632002OH,,,,OHH2OOH+H++eFe-2eFe2+2H2O-4e4H++O22H2O+2eH2+2OH-,OH,,,BOH,,OH[1],BOH,,(AOP)[4,5](OH),CO2H2OAOPO3/UVUV/H2O2/UVH2O2/Fe2+(Fenton)O3/H2O2OH,AOP[5],,AOP3,,OH,,OH,;,,[1]PanizzaM,BoccaC,CerisolaG.Electrochemicaltreat2mentofwastewatercontainingpolyaromaticorganicpol2lutants[J].WaterResearch,2000,34(9):2601[2]TomatR,RigoA.ElectrochemicaloxidationoftoluenepromotedbyOHradical[J].JApplElectrochem,1984(14):1[3],,.Fenton[J].,1996,23(2):184[4],,.[J].,2000,20():26[5]RajeshwarK,IbanezJG,SwainGM.Electrochemistryandtheenvironment[J].JApplElectrochem,1994(24):1077Treatmentofdyestuffswastewaterwithtwoandthree2dimensionelectrodemethodsXIONGRong2chunJIACheng2gongWEIGang(CollegeofMaterialsScienceandEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China)Abstract:Thetreatmentprocessanditsmechanismofthetwoandthree2dimensionelectrodemethodswerestudiedwithrhodamineB,whichrepresentsthedyestuffswastewaterbeingusedasthetreatingobject,andwiththestainlesssteelbeingusedastheelectrodes.Theresultsshowthatthestainlesssteelelectrodeshavebetterelectrocatalyticdegradationfunctionontheorganicpollutants.Especiallywhenathree2dimensionelectrodesys2temwasused,anexcellenteffectofwastewatertreatmentcouldbereachedinashortertime.Theresultsofthecolorimetryshowthatwhenthestainlesssteelelectrodewasusedinthedegradationprocessofwastewater,OH,whichhasastrongoxidationforce,wasgenerated.Asaresult,theelectrocatalyticmethodisproposedtoberankedasanadvancedoxidationprocess(AOP).Keywords:electrocatalyticmethod;three2dimensionelectrode;wastewatertreatment;hydroxylradical735: