多相类芬顿纳米催化剂铁酸铋降解木素模型物

313004942014CFB586Q20131402BSQD12037BSQD13008(1979)02788023359E-mail:[e-mail]197915927030439E-mail:[e-mail][1][24][5,6]FentonpHpH3FentonFentonFentonFentonBiFeO3FentonA[7,8](1)BETCary50AAS[9]0.008mol0.008mol20mL20μL0.1mol·L10.008mol10mL601h1005h30min5002hdoi:10.13472/j.ppm.2015.08.019FentonFentonpHX793A100163092015080079041(77K)BET(0.06~0.22)BETBJHc2mg·L14mg·L16mg·L18mg·L110mg·L1AcA1minpHA030UV2550(AAS,Analyst300,P.E.Inc.)FeBi77K2p/p0H3BET7.50m2·g1(c/c0)3a40min10%(ln(c0/c)=kt)k3bOHOHBiFeO30.5g·L140min92%0.064min14a4bOHkH2O220mmol·L1OHOHk2abk3H2O212mmol·L1kabk4H2O2pHk5a5bpH48[10]pH47kpHFentonk6a6b3060FentonAASFe3+Bi3+pH4.07aBi3+Fe3+120minFe3+0.95%7babk5pHabk6abk755k0.089min10.088min10.088min10.087min10.087min1pHpHpH4~7[1],[J].,2005,24(4):2022.[2],,/[J].,2004,19(2):129133.[3],,Pd/C[J].,2005,20(2):7174.[4]ChangCN,MaYS,FANGGC,etal.DecolorizingofligninwastewaterusingthephotochemicalUV/TiO2process[J].Chemosphere,2004,56(10):10111017.[5]WuJ,ZhangXY,YuHQ.Degradationoflignininpulpmillwastewatersbywhiterotfungionbiofilm[J].BioresourceTeelmol,2005,96(12):13571363.[6]DebendraKS,RimpyG.Evaluationofligninolytiemicroorganismsforefficientdecolorizationofasmallpulpandpapermilleffluent[J].ProcessBiochem,2005,40(5):15731578.[7]AnJJ,ZhuLH,ZhangYY,etal.Efficientvisiblelightphoto-Fenton-likedegradationoforganicpollutantsusingin-situsurface-modifiedBiFeO3asacatalyst[J].Journalofenvironmentalscience,2013,25(6):12131225.[8]AnJJ,ZhuLH,WangN,etal.Photo-Fentonlikedegradationoftetrabromobisphenolawithgraphene-BiFeO3compositeasacatalyst[J].Chem.Eng.J.,2013,219:225237.[9]LuoW,ZhuLH,WangN,etal.EfficientremovaloforganicpollutantswithmagneticnanoscaledBiFeO3asareusableheterogeneousFenton-likecatalyst[J].Environ.Sci.Technol.,2010,44:17861791.[10]LuoW,LIYS,YuAJ,etal.UltrasensitivefluorometricdeterminationofhydrogenperoxideandglucosebyusingmultiferroicBiFeO3nanoparticlesasacatalyst[J].Talanta,2010,81:901907.EfficiencyDegradationofLigninModelPollutantswithBiFeO3NanoparticlesasaHeterogeneousFenton-LikeCatalystANJun-jian,ZHANGGuang-yan,WANGPeng,WANGLei,CHENGHan-yuan(PulpingandPapermakingEngineeringCollege,LightIndustryDepartment,HubeiProvincialKeyLaboratoryofGreenMaterialsforLightIndustry,HubeiUniversityofTechnology,Wuhan,HubeiProvince,430068China)Abstract:HeterogeneousFenton-likeprocesspossessstrongcatalyticactivityduringthedegradationoforganicpollutants.AmongtheheterogeneousFenton-likecatalysts,thecatalystscontainedironionscouldactivateH2O2,whichpossessbettercatalyticeffect.Inthisstudy,BiFeO3whichcontainedironionswasusedtoactivateH2O2asaheterogeneousFenton-likecatalyst.Andtheproducedstrongoxidizingactivespeciessuchashydroxylradicalswereusedtodegradeligninwhichwasthemainorganicpollutantsinpapermakingsewagewater.Thepossibilityofdegradingligninmodelpollutants(ferulicacid)withheterogeneousFenton-likeprocesswasdiscussedinthispaper.Andtheeffectofreactivecondition(BiFeO3load,H2O2concentration,reactivetemperatureandpHvalue)todegradationwasstudied.Exceptthat,thestability,returnabilityandrecyclingperformanceofthecatalystwerefurtherinvestigated.TheresultsshowedthatBiFeO3coulddegradeferulicacidmoreefficiency.Andthecatalystpossesstheadvantagesofeasyrecycle,stablestructureandrecyclingusemanytimes,whichpossessgoodapplicationprospect.ThisstudymayprovidetheoryandtechnologysupporttothedegradationpapermakingsewagewaterwithheterogeneousFenton-likeprocess,whichpossessacertainpracticalsignificance.Keywords:BiFeO3;ligninmodelpollutants;adsorption;catalysis;degradation20150510