UVVisH2O2草酸铁络合物法在水处理中的应用

综述UV-Vis/H2O2/张乃东1,2,郑威3,黄君礼1(1.,150090;2.,150080;3.,150040):介绍了各光Fenton法的运行机理及存在的优缺点,综述了UV-Vis/H2O2/草酸铁络合物法在水处理中的应用状况,并对其今后的发展趋势进行了阐述.UV-Vis/H2O2/草酸铁络合物法是一种新的高级氧化技术,是对光Fenton法的发展,在处理高浓度难降解有机废水方面效果优于UV/Fe2+/H2O2法UV/H2O2法TiO2法和WO3法等,因其具有一定的利用太阳能的潜力,所以具有较好的应用前景.:光降解;草酸铁络合物;过氧化氢;羟自由基OH:1000-3231(2003)01-0072-07:O64:A1Fenton,.Fenton,,TiO2WO3(AdvancedOxidationProcess,AOPs),.FentonFenton,H2O2OH,OH,,,,.1964Eisen-houserFenton,FentonFentonUV/Fenton,UV/FentonUV-Vis/H2O2/.:2002-09-02;:2002-09-25:E01-06:(1969-),,,:.72211Vol.21No.120031PHOTOGRAPHICSCIENCEANDPHOTOCHEMISTRYJan.,2003Fenton,,[1].Fe3+,OH.Fenton.UV/Fenton,.1)Fe2+H2O2[2],H2O2Fe2+H2O2.[3,4].:Fe(OH)2+hFe2++OH(1)Fe(ROH)2+hFe2++H++OR(2)Fe2+H2O2,OH,.(1),,OH,:313nm,OH0.14,360nm0.017.UV/H2O2,H2O2OH[5,6]:H2O2h2OH(3)2HO2-h2OH+O2(4)OH+HO2-HO2+OH-(5)HO2+H2O2OH+H2O+O2(6)(3)OH0.01,H2O2300mm,,.:;pH;Fe,,.2)[4].Fe3+,Fe2+:Fe(RCOO)2+hFe2++CO2+R(7)RO2,Fe2+Fenton.,.Fe2+H2O2,H2O2,Fenton.,UV/Fenton[2].,Fe()H2O2;,H2O2,OHH2O2[4].H2O2+OHO2H+H2O(8),UV/Fenton,Fe()[7,8][9],.,pH34.9,,pH4.08.0,,UV/Vis//H2O2.1:UV-Vis/H2O2/732UV/Vis/H2O2/Fe3+C2O43-3Fe(C2O4)+Fe(C2O4)2-Fe(C2O4)33-,,Fe(C2O4)33-,.Fe(C2O4)33-(),Fe(C2O4)33-,.Fe(C2O4)33-200nm(1),500nmOH.1H2O2Fe(C2O4)33-AbsorptionspectraofhydrogenperoxideandpotassiumferrioxalateinaqueoussolutionFe(C2O4)33-[7,8,10]:Fe3++H2O2+3C2O42-Fe(C2O4)33-+OH-+OH(9)Fe(C2O4)33-hFe2++2C2O42-+C2O4-(10)C2O4-+Fe(C2O4)33-Fe2++3C2O42-+2CO2(11)C2O4-CO2+CO2-(12)250450nmFe2+1.01.2,Fe(C2O4)33-OH,.,C2O4-CO2-O2,H2O2.C2O4-/CO2-+O2O2-+2CO2/CO2(13)2O2-+2H+H2O2+O2(14)Fe2+H2O2,Fenton.[11]Fe()C2O42-OHpHFe()Fe()OH,OH0.86molL-1min-1,0.10molL-1min-1,UV/Vis/H2O2/UV/Fenton.C2O42-H2O2,Fe()Fe7421(),H2O2,.,UV-Vis/H2O2/,,UV-Vis/H2O2/.[12]400W,H2O2-,.,UV/H2O2/,UV/H2O2/TiO2H2O2/,[13],/(,),TiO2WO3.,1,TiO224%,WO310%,/98.3%.[14]UV-Vis/H2O2/,UV/Fenton,600mg/L,EE/O0.53kWh/m3117kWh/m3.[15],12min99%,30minTOC92%.AliS[8],UVUV,UV/H2O2UV/Fenton,UV/H2O2/,EE/O1.6kWh/m3.AliS[16]//,/H2O2/TiO22545.RaquelF[10]365nm(DCA)2,4-(DCP),:pH=2.52.8,[FeOx]=1.5mmol/L,[H2O2]=61.5mmol/L,25minTOC85%,2,4-TOC98%.RaquelF[17](DCA)2,4-(DCP),[FeOx]=0.8mmol/L,[H2O2]=6.0mmol/L,10min1.0mmol/LTOC100%,35min1.0mmol/L2.4-TOC90%.CarinaAE[18]EDTA,1TOC100%,UV/Fenton,pH.,UV-Vis/H2O2/:pHFenton,pH3.04.0,H2O2Fe(OH)2Fe(OH)+[19],;[Fe]/[H2O2]H2O2,,;[Fe]/[C2O42-],1/6,Fe(C2O4)33-;,H2O2.,UV-Vis/H2O2/,.1:UV-Vis/H2O2/753UV-Vis/H2O2/UV-Vis/H2O2/,,3:Fe(C2O4)3H2O2[10,13,17];Fe3+H2O2C2O42-[12];Fe2+H2O2C2O42-[14,15].UV-Vis/H2O2/,FentonUV-Vis/,Fenton,3,,.UV-Vis/H2O2/AOPs:,,Fe2+H2O2OH,H2O2.H2O2C2O42-,,C2O42-OHCO32-HCO3-;,4%,,12cm,UV-Vis/H2O2/.1),.2),.3),,O2Fe()H2O2Fe()[20,21],.,,CO32-,,[22];HCO3-CO22-OH[23].CO32-+OHCO3-+OH-(15)HCO3-+OHCO3-+H2O(16)4).,,,.:[1]RupertG,BauerR,HeislerGJ.Thephoto-Fentonreactionaneffectivephotochemicalwastewatertreatmentprocess[J].J.Photochem.Photobiol.A:Chem.,1993,73:75-78.[2],.-Fenton[J].,1994,13(4):302-306.LiuYD,XuSC.StudyonthereactionmechanismofUV/Fentonreagentanditsapplicationtowastewatertreatment[J].EnvironmentalChemistry,1994,13(4):302-306.[3]FaustBC,HoigneJ.PhotolysisofFe()-hydroxylcomplexesassourcesofOHradicalsinclouds,fogandrain[J].Atmos.Environ.,1990,24A:79-89.[4]LoretoL,DoloresS,SoledadR.DegradationofphotographicdevelopersbyFentonsreagent:conditionoptimizationandkineticsformetaloxidation[J].WaterRes.,2000,34(6):1791-1802.7621[5]WeeksJL,MathesonMS.Theprimaryquantumyieldofhydrogenperoxidedecomposition[J].J.Am.Chem.Soc.,1956,78:1273-1278.[6]AdamsCD,KuzhidannilJJ.Effectsofpreoxidationontheaerobicbiodegradabilityofquaternaryaminesurfactants[J].WaterRes.,2000,34(2):668-672.[7],,.Photo-Fenton[J].,2000,18(4):357-365.XieYD,ChenF,HeJJ.RecentadvanceinphotoFentonreaction[J].PhotographicScienceandPhotochemistry,2000,18(4):357-365.[8]AliS,JamesRB,StephenRC.Ferrioxalate-mediatedphoto-degradationoforganicpollutantsincontaminatedwater[J].WaterRes.,1997,31(4):787-798.[9]ZeppRG,FaustBC,HoigneJ.Hydroxylradicalformationinaqueousreaction(pH3-8)ofiron()withhydrogenper-oxide:Thephoto-Fentonreaction[J].Environ.Sci.Technol.,1992,26(2):313-319.[10]RaquelF,PupoN,GuimaraesJR.Photodegradationofdichloroaceticacidand2,4-dichlorophenolbyferrioxalate/H2O2system[J].WaterRes.,2000,34(3):895-901.[11],,,.Fe()[J].,2002,21(1):87-91.ZhangL,ZhangZ,WuF,DengNS.DeterminationofhydroxylradicalsproducedbyphotolysisofFe()oxalateinwater[J].EnvironmentalChemistry,2002,21(1):87-91.[12],.UV/H2O2/[J].,1999,19(6):526-529.LiTY,LiuQY.StudyonphotodegradationofchloroforminwaterbyUV/H2O2/ferrioxalatecomplexes[J].ChinaEnvironmentalScience,1999,19(6):526-529.[13],,./[J].,1999,20(1),1-7.ZhongNH,XuJL,XueJY.Experimentalresearchonsolardegradationofazodyesinferrioxalatehydrogenperox-idesystem[J].ActaEnergiaeSolarisSinica,1999,20(1),1-7.[14],,.Fenton[J].,2002,3(2):20-22.ZhangND,HuangJL,ZhengW.Treatmentofphenols-containingwastewaterbyphotoFentonprocess[J].Tech-niquesandEquipmentforEnvironmentalPollutionControl,2002,3(2):20-22.[15],,.UV/Vis/H2O2/[J].,2002,53(1):36-39.ZhangND,HuangJL,ZhengW.TheresearchonphotodegradationofanilinewastewaterbydynamicUV-vis/H2O2/ferrioxalatecomplexesprocess[J