H2O2湿式氧化处理含酸性红B染料模拟废水的研究

:025322468(2004)0520809206:X703:AH2O2B,3,(,510640):H2O2,WPO()CWPO()B,.,,WPO,2208min011MPa,1500mgL-1BCOD60150%96180%.,COD,Cu2+CWPO,2208min011MPa,CWPOCOD82150%99171%.CWPOWPOCOD65193%.:;;B;TreatmentofAcidRedB2containingwaterbywetperoxideoxidationWUZhimin,WEIChaohai,WUChaofei(SchoolofChemicalEngineering,SouthChinaUniversityofTechnology,Guangzhou510640)Abstract:OxidationofAcidRedBinwaterbywetperoxideoxidation(WPO)andcatalyticwetperoxideoxidation(CWPO)wasexploredinacontinuouspressurereactor,usingH2O2astheoxidant.Theeffectoftemperature,pressure,oxidantdoseandcatalystontheoxidationpro2cessandthedegradationefficiencywasstudied.TheresultsindicatedthatAcidRedBcanbedegradedinWPOwhichhavethestablestructureatlowertemperatureandpressurecomparedwiththetraditionalwetairoxidation,and60150%ofCODremovaland96180%ofcolourreduc2tionwereachievedat220for8min,at0.1MPawhentheinitialconcentrationofAcidRedB2containingwaterwas1500mgL-1.TheCODandcolourremovalefficiencycannotbeimprovedbyincreasingthetemperatureandraisingtheperoxidedosage,whenCu2+wasintroducedin2totheCWPOprocess,82.50%CODremovaland99171%colourreductionwereobtainedat220and0.1MPafor8min.Throughcalcula2tion,theactivationenergyofCWPOdecreaseby65193%comparedwithWPO.Keywords:hydrogenperoxide;wetperoxideoxidation;acidredB:2003209228;:2003212201:(29877009,20277010);:(1978-),,;3,[e-mail],50%[1].B(Ac2idRedB)BFB,.,,,1,4212242(NW).,B,,,.[2][3][4][5]B.,;[6];,.,24520049ACTASCIENTIAECIRCUMSTANTIAEVol.24,No.5Sep.,2004.,H2O2.H2O2,,,O2,H2O2[7].(WPO)(CWPO)B,H2O2.1111100mL,316.B,2610%,Cu2+..11211;21;31;41;51;61;71;81;91;101;111;1211Fig.1TheequipmentandprocessofwetoxidationB,1500mgL-1,COD2000mgL-1,,011MPa,140240.1,,,,.5min,COD,.1.3722(),COD.B,GCPMS.GCPMS:HP5890IIGCP5972MSD;:DB25(30m0125mm0125m);:;:2L;:,210mLmin-1;:70,4min,3min-128030min;:280;(mPz):50550amu;:HP.:METROHM792BASICIC;:METROSEPC2100,:1mLmin-1,:410mmolL-1,0175mmolL-1;:METROSEPASUPP5,:017mLmin-1,:110mmolL-1,312mmolL-1.0182422114:(WAO);WAO115mgL-1Cu2+(CWAO);WAO(PWAO);(WPO).WAOCWAOPWAO280,6MPa;WPO200,011MPa.PWAO10%.COD.23.1500mgL-1(COD2000mgL-1),WAOCOD,30min14108%24113%.,CWAOCOD35117%55126%.PWAOCOD38189%58181%.OH,,,.3,,,WPOCOD,56148%98188%.2CODFig.2ComparisonofdifferentwetairoxidationprocessesonCODremoval3Fig.3Comparisonofdifferentwetairoxidationprocessesoncolourreduction212(WPO)2.2.1COD(1510mLL-1),160240.45,8min,;COD,180220,240220;2208min,COD60150%96180%;COD,NN;:OH;.1185:H2O2B4CODFig.4EffectoftemperatureonCODremoval5Fig.5Effectoftemperatureoncolourreduction2.2.2(),,,.,,,,.220011MPa(COD50%100%150%200%250%).67:COD,COD,COD;,COD,.COD.HO2,HO2H2O2,.6CODFig.6EffectofhydrogenperoxidedosageonCODremoval7Fig.7Effectofhydrogenperoxidedosageoncolourreduction2.3(CWPO)WPOB,,.115mgL-1Cu2+,COD(1510mLL-1),140240COD,2182489.8CODFig.8EffectoftemperatureonCODremoval9Fig.9Effectoftemperatureoncolorreduction,Cu2+,1808min,COD,39190%42192%74140%98102%.2208min,COD82150%99171%.,WPO.214WPOCWPO214118minWPOCWPOCOD1011.10WPOCWPOCODFig.10ComparisonofWPOandCWPOonCODremoval11WPOCWPOFig.11ComparisonofWPOandCWPOoncolorreduction2.4.24,WPOCOD(COD),12.,Arrhenius:k=Aexp(EaPRT)(1),k(min-1),A(min-1),Ea(kJmol-1).12CODEa41112kJmol-1,A4329125min-1.,8,13,CWPOCOD14101kJmol-1,A10137min-1.WPO,CWPO65193%.Cu2+,.2153185:H2O2BO2,B.GC2MSWPOCWPO(NH+4NO-2NO-3).,:;NH+4NO-2NO-3.,NN.12WPOln(k)-1PRTFig.12Therelationshipbetweenln(k)and1PRTintheWPOempiricalmodel13CWPOln(k)-1PRTFig.13Therelationshipbetweenln(k)and1PRTintheCWPOempiricalmodel3(1)B,,,2208min011MPa,COD60150%96180%.(2)WPO,Cu2+CWPOCOD65193%;2208min011MPa,COD82150%99171%.,WPO.:[1]ChunmeiZhu,LiangyanWang,LinrenKong,etal.PhotocatalyticdegradationofAZOdyesbysupportedTiO2+UVinaqueousso2lution[J].Chemosphere,2000,41:303309[2],,.[J].,1997,10(2):1114[3],,.B[J].,2003,24(2):108111[4]DaneshvarN,SalariD,KhataeeAR.Photocatalyticdegradationofazodyeacidred14inwater:investingationoftheeffectofoper2ationalparameters[J].JournalofPhotochemistryandPhotobiologyA:Chemistry,2003(157):111116[5]JiantuanGe,JiuhuiQu.DegradationofazodyeacidredBonmanganesedioxideintheabsenceandpresenceofultrasonicirradiation[J].JournalofHazardousMaterialsB,2003,100:197207[6]McclungSM,LemleyAT.Electrochemicaltreatmentofaciddyewastewater[A].204thMeetingoftheAmericanChemicalSociety[C].WashingtonDC,1992[7],,,.[J].,2002,20(2):7941824