超声Fenton试剂氧化耦合处理染料废水

3422007JOURNALOFBEIJINGUNIVERSITYOFCHEMICALTECHNOLOGYVol.34,No.22007/Fenton3(,100029):/Fenton2,5%,Fenton45%,90%/Fenton,pHFe2+H2O22,pH,pHFeSO4,FeSO401045mmol/L,H2O2:;Fenton;2:X703:2006209212:,1980,3E2mail:[e-mail],67,10%,,,,,,,[123],,,,,[425],Fenton2,,1111:JY98();UV22000():2(RR2),,5000mg/L,;30%H2O2,;FeSO47H2ONaOHHCl112100mg/L200mL,25H2O2FeSO4,(),538nmRR2,,(1)=(0-t)/0100%(1)0RR2,mg/L;tRR2t,mg/L2211RR2(US)Fenton,,US/FentonFentonUSRR2,1US,US,H2O(OH),,RR2,,,OH[6]OH,US1RR2Fig.1DegradationofRR2bydifferentmethodsFentonRR2,[7],Fe2+H2O2OH,OHFe2++H2O2Fe3++OH+OH-(2)USFenton,,60min9614%,USFentonFe2+(2)Fe3+,H2O2Fe2O2H2+,USFe2+HO2[8]:Fe3++H2O2FeO2H2++H+(3)FeO2H2++USFe2++HO2(4),Fe2+(2)(4),FentonUS/FentonRR2,USOH,Fe2+H2O2OH,OHRR2,USFe2+,Fe2+,HO2,,Fenton,US/Fenton212US/FentonRR2,US/FentonRR2,1/tt,R201978,RR2US/FentonRR2k01005mg/(Lmin),,RR21/t=01005t-010037(5)213US/FentonRR221311USH2O20105013mmol/L,pH4,20kHz,20mm,60min,US400,560,720,880,1040,1200W,22RR2Fig.2EffectofultrasonicpoweronthedegradationofRR2,RR2US,,,RR2,USRR221312pHUS1200W,pH3,4,5,516,6,7,8,33pHRR2Fig.3EffectofpHonthedegradationofRR23212:/FentonpHRR2,RR2RR2US/Fenton[6]pHRR2,RR2,,,H2O2H2OO2,OH,Fe2+,,,pH4(pH415)21313H2O2H2O23,8,13,16,32,65,98mmol/L,44H2O2RR2Fig.4EffectofH2O2concentrationonthedegradationofRR2H2O2FentonOHRR2H2O2Fe2+OH,RR2OH[9],Fenton21314FeSO4FeSO401030,01035,01040,01045,01050,01060mmol/L,5Fe2+H2O2OH,Fe2+,,RR2FeSO4,,Fe2+OHFe3+,OHFeSO4,,,FeSO45FeSO4RR2Fig.5EffectofFeSO4concentrationonthedegradationofRR23(1)US/FentonRR2,9614%,,(2)US/FentonRR2Fe2+pH,:[1].[J].,2004(12):5-7.[2]TEZCANLI2GUYERG,INCENH.Degradationandtoxicityreductionoftextiledyestuffbyultrasound[J].Ul2trasonicsSonochemistry,2003,10(4-5):235-240.[3]REHOREKA,TAUBERM,GUBITZG.Applicationofpowerultrasoundforazodyedegradation[J].UltrasonicsSonochemistry,2004,11(3-4):177-182.[4]GOELM,HUH,ARUNSM,etal.Sonochemicalde2compositionofvolatileandnon2volatileorganiccom2pounds-acomparativestudy[J].WaterResearch,2004,38(19):4247-4261.[5],,,.[J].,2003,23(7):8-12.[6]BONGBEENY,HIROSHIO,YOSHION,etal.Sono2chemicaldegradationofchlorinatedhydrocarbonsusingabatchandcontinuousflowsystem[J].JournalofHaz2ardousMaterials,2001,81(3):253-263.[7]MERICS,SELCUKH,GALLOM,etal.Decolourisa2tionanddetoxifyingofremazolreddyeanditsmixtureusingFentonsreagent[J].Desalination,2005,173(3):239-248.4212007[8]LINJih2Gaw,MAYing2Shih.Oxidationof22chlorophe2nolinwaterbyultrasound/Fentonmethod[J].JournalofEnvironmentalEngineering,2000,126(2):130-137.[9]TANGWZ,CHENRZ.DecolorizationkineticsandmechanismsofcommercialdyesbyH2O2/ironpowdersystem[J].Chemosphere,1996,32(5):947-958.Synergisticdegradationofdyeingwastewaterbytheultrasound/FentonmethodPENGXiaoYunFENGLiuLIULu(CollegeofChemicalEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China)Abstract:DegradationofsimulatedReactiveRed2(RR2)wastewaterbyultrasonictechnology,Fentonreagentoxidation,andacombinationofthetwoprocesseswasstudied.Itwasfoundthatextentofdegradationbyultra2sonictechnologyorFentonreagentoxidationalonewaspoor,withvaluesof5%and45%respectively.Theex2tentofdegradationwassignificantlyenhancedwhenthetwoprocesseswerecombined,withavalueofupto90%,whichshowsthatthesetwoprocesseshaveagoodsynergisticeffect.ThedegradationofRR2bythecom2binedprocessescanbedescribedbyasecond2orderkineticsmodel.Theeffectofvaryingfactorssuchasultrasonicpower,pH,andconcentrationofFe2+andH2O2onthedegradationofRR2wasinvestigated.TheresultsshowedthatthedegradationextentisstronglypHdependentandincreaseswithdecreasingpH.TheextentofdegradationwasfoundtoincreasewithincreasingultrasonicpowerandFeSO4concentrationbelow01045mmol/L.Furthermore,itwasfoundthatthereisanoptimalintermediateH2O2concentrationforeffectiveRR2degra2dation.Keywords:ultrasounddegradation;Fentonreagentoxidation;ReactiveRed2GB/T77142005,:.[J].:,,():..:[M]...:,:..[C].:..:,:..[D].:,..:,[P]...:[/].:,().,33,etal;,,,METCALFSW;,,ZHANGXiaoming;33rded;;,,:-M,-C,-G,-N,-J,-D,-R,-S,-P,-DB,-CP,-EB;:-MT,-DK,-CD,-OL5212:/Fenton