Fenton试剂氧化降解愈创木酚的研究王昶

中　国　造　纸　学　报TransactionsofChinaPulpandPaperVol.24,No.4,2009　:2009-08-01()　:(0604140)。　:　,,1958;,;:、、。E-mail:[e-mail]试剂氧化降解愈创木酚的研究王　昶　刘　芳　贾青竹　李桂菊　李晨陶(,,300457)　:,,Fenton,H2O2、Fe2+、pH、、。,,pH3.0,2H2O2,Fe2+H2O21∶50,60min,50mg/L85.1%;,Fenton,,30min。:Fenton;·OH;;:X793　　　　:A　　　　:1000-6842(2009)04-0072-05　　,,,[1-2]。,3,、[3-4]。,,CODCr[2]。FentonH2O2Fe2+(·OH),,2.80V,,CO2H2O,。Fenton、、、、,、、,[5]。Fenton,:pH、H2O2、Fe2+、、、[6-7]。,,,-,Fenton,pH、H2O2、Fe2+、、、,Fenton。1　　1.1　(1):UV-1100-;J500;pHS-3C;85-2;ZSZ。(2):;NaOH;H2SO4;FeSO4;Na2SO3;H2O2(30%)。。1.2　HOC6H4OCH3,、、。1.3　-,-,274.0nm。,-274.0nm,(c)-(A)(1)。:A=0.0189c-0.0007,R2=0.9999。72　24　4Fenton1　1.4　Fenton1.4.1　Fenton,(10cm),(15cm×8cm,750cm3)[8-9],20℃。500mL,,,H2SO4NaOHpH。,10mg/LFeSO4,H2O2。,5mL,Na2SO3,λ=274.0nm。c-A(1),:(%)=c0-cc0×100%,c0,mg/L;c,mg/L。1.4.2　H2O2H2O2CO2H2OH2O2。,(1),50mg/LH2O2219.36mg/L(Q)。H2O2Q,,。C7H8O2+16H2O27CO2+20H2O(1)2　2.1　pH,50mg/L500mL,H2SO4NaOHpH,H2O22,2Q,n(Fe2+)∶n(H2O2)=1∶50,Fenton,60min。pH2。2　pH2,pH3.0～5.0,Fenton,80%,pH3.0,85.1%。pH2.0,22.7%;pH6.3,62.9%。,pH,。pH,·OH。,pH,Fe2+,H2O2。H2O2,pH,H2O2O2H2O,[10]。,pH,H2O2,,·OH,。H+,Fe3+Fe2+,Fe2+。,pH,H2O2Fe2+,,pH3.0,Fenton。2.2　H2O2,50mg/LpH3.0,H2O2,n(Fe2+)∶n(H2O2)=1∶50,Fenton,60min。H2O23。3,H2O2。H2O22Q,73Fenton24　43　H2O2。,H2O2,。H2O2·OH,。H2O2·OH,H2O2,H2O2·OH,(2)(3),·OH。,,,H2O22Q。·OH+H2O2H2O+·OOH(2)·OH+·OHH2O2(3)2.3　Fe2+,50mg/LpH3.0,H2O22Q,n(Fe2+)∶n(H2O2)Fenton,60min。Fe2+4。4　Fe2+4,Fe2+,Fe2+。n(Fe2+)∶n(H2O2)1∶50,。Fe2+,。Fe2+Fenton·OH,Fe2+,Fe2+,·OH,。Fe2+,。:①Fe2+H2O2·OH,·OH,·OH(3),;②Fe2+·OH,(4):Fe2++·OHFe3++OH-(4)·OH。Fenton,Fe2+,。Fe2+,,。n(Fe2+)∶n(H2O2)=1∶50,。2.4　,,H2O2Fe2+。,500mL,pH3.0,H2O22Q,n(Fe2+)∶n(H2O2)=1∶50,Fenton,60min。5。5　5,H2O2Fe2+,。,H2O2,·OH,,。,H2O2,·OH。·OH(3),H2O2(2)74　24　4FentonHOO·,。,,H2O2Fe2+。,H2O2,·OH;,H2O2,·OH,H2O2,Fenton。2.5　,50mg/L500mL,pH3.0,H2O22Q、n(Fe2+)∶n(H2O2)=1∶50Fenton。6。6　6,10min,50%,Fenton。60min,85%。,6,60min,。Fenton,60min,·OH。60min,·OH,。,60min。2.6　,Fenton。。50mg/L500mL,pH3.0,H2O22Q、n(Fe2+)∶n(H2O2)=1∶50、(11W,λ=253.7nm)Fenton,60min。Fenton7。7　7,Fenton。10min,53.4%78.8%,25.4。30min,,60min,85.1%。,Fenton,,。Fenton,·OH。,H2O2,·OH,(5)(6):H2O2+hv·OH+·OH(5)Fe3++H2O+hv·OH+Fe2++H+(6),pH3,Fe3+OH-Fe(OH)2+。Fe2+,·OH,(7):Fe(OH)2++hvFe2++·OH(7)Fe2+,Fenton,·OH,。3　　3.1　pH、H2O2、Fe2+、、、Fenton。3.2　50mg/L,:pH3.0,H2O22(2Q),n(Fe2+)∶n(H2O2)1∶50,60min,85.1%。75Fenton24　43.3　,Fenton,,,。　　　[1]　　,,　.Fenton[J].,2007(3):30.[2]　,.Fenton[J].,2007,25(4):11.[3]　.[M].:,2001.[4]　HustertK,ZeppRG.Photocatalyticdegradationofselectedazodyes[J].Chemosphere,2004,24(23):35.[5]　,.Fenton———[J].,2005,24(1):48.[6]　　,,,.TiO2[J].,2007,22(4):56.[7]　　,,,.TiO2[J].,2007,27(12):18.[8]　,　,　,.Fenton[J].,2000,21(5):93.[9]　　,,.UV/Fenton[J].,2004,24(2):225.[10]　SanjaP,DinkoV,NatalijaK,etal.Decolourizationandmineraliza-tionofcommercialreactivedyesbyusinghomogeneousandheteroge-neousFentonandUV/Fentonprocesses[J].HazardousMaterials,2009,164(2):1137.OxidativeDegradationofGuaiacolwithFentonProcessWANGChang＊　LIUFang　JIAQing-zhu　LIGui-ju　LIChen-tao(CollegeofMarineScienceandEngineering,TianjinUniversityofScienceTechnology,Tianjin,300457)(＊E-mail:[e-mail])Abstract:Fentonadvancedoxidativeprocesswithauniqueadvantageintreatmentoforganiccompoundswhicharedifficulttobedecomposedwasusedtotreatguaiaclo,thedegradationcharactersoftheguaiacolobtainedfromthepapermakingwastewaterwereinvestigatedinaself-designedcylindricalreactor.TheeffectsofpHvalue,thedosageofH2O2,theconcentrationofFe2+,guaiacolinitialconcentration,reactiontimeandUVirradiationonthedegradationofguaiacolwerediscussed.TheexperimentalresultsshowedthatatpHvalue3andtemperature20±1℃thehighlevel85.1%ofguaiacoldegradationwasachievedduring60minutesperiodwhenthedosageofH2O2wastwotimesofthetheoreticalquantityandFe2+/H2O2molarratio1∶50.ThedegradationofguaiacolwasimprovedgreatlywhenUVirradiationwasappliedinFentonprocess.Byusingthisprocess,guaiacolwasdecomposedcompletelyonlyin30minutes.Keywords:homogeneousFentonprocess;hydrogenperoxide;guaiacol;lignin(责任编辑:郭彩云)76