TiO2悬浮体系下光催化降解愈创木酚的动力学研究王昶

TransactionsOfChinaPulPandPaperVol.22,No.4,2X()7iT02(,,357):(GM),iTo:,GM。CM:l/;1.744/c0.1034。,GM,GM。,3。:;;;;:X793:A:1X)6842(2X()7)045605,,,、、COD。,,【’〕、〔’][’〕。,,ITO:〔4,],。,,LangrniuriHsnhelwood〔`,)。iTo:,—,ITO:,ngmiuriHsnhelwood,,,。11.1,,(orcm),(sx15。m,750。m,)。,500m;L(252llw),253.7nm;(202)℃。,,,。1.2ITO:ITO:,162nm,46mZ/g,。,。(GM)(oHC6H4oCH3),,,,()。:20070410()2〕〕6(060414D)。:,,1958;,;:、、。Emial:[e-mail]224Tio:1.3,66mL,pH3.5、0.4L、2.0min,30n,,10mL,GT10()3(X〕r/min30min,。Uv1600()274.0nm,GM。rrKo。,(2)gtniur〔”〕,:。=」=Or~aKCl+aKC(3),aK;C。(3)(2),:111—=-+rKaKrCr(4)2,ITO:〔`,s。3:①iT02;②ITOZ;③ITOZ。,,[’。iTo:。,、、、,。2.1、、〔”]。、。,。,,·OH,O:、·OH、。:.dC,。_r=k8。_nos_.(l)dt--uZ”U””r,k;I;=o0、0.oHoor、·OH。,pH,00.oH,(l)::rK—,min,aK—C—,mL,m(min·L)(4)LH,aLgnmiur,,,,,。2.ZGM,GM,LHGM,GMITOZ。,ITO:GM30min,,30min,1。,(3)(5):QeqQmaxaKC。ql+C、(5),eCq;eQq,Qe,=(C。Ceq,,vUV—1.21.0(c0):15.1mg/LD34.6mgL/△50.1mg/Lx65.8mgL/X△X△X△Dx△X△xC-J~--~J~~~~~~~~~~~~~~~~~~120180240300O64,`U.…onU360420/n1pH3.5,0.4g/LoGM224,m(g)。(5):=+。qmaxaKmax(6)1eCqeQqC,/QeqCe,(2)。l210。:::)666Q15.lmgzLLL3D.46mg/LLLǎlàGààh/3ln(0C/C`)+aK(0CC`)rK=9.668。(4)GMITO::Onù64。、é0204060eCmg·L,1.7C+0.1034(10)lr2CeqC。/。2,eCq/eqeCq,0.9883,:C__0·”87C+“·”,6`7,(7)GMiTo:Qma:(7.225mg)aK(5.931x10)。2.3TIO:GM,iToZGM30min,。Langmiur,LHGM,(4):C。`naK(c。“)aK`(`),Kr;aK,rK=,k。K。,rK,In(c。/c:)+aK(C。C`)t,3。3,ln(0C/C:)aK(C。C:)t,,0.9968,:C。`n+K·(c。c)0·“734`(9)=5.931xlo“,(10):GM,,,GM,,。2.4,,r0,,。[””],。,C=0.50C,t,/2:0.SCo+;1n2rKaK(11)(11),:tl/:=0.052C。+1.209(12)4,C。t4。,GM0.50C,tl/2t’,/2(5)。5,GM,lt2/t’1/:,tl/2t’./:。:GM,,iTo:,,GM。GM,224TIO:///!ǎ··、exOD、x^x△x△XD△x△C0m/g.L18060402001ó。\.06402468h/00nnù,11、02040600C/mg·L10.4『L,pH3.5,6h。5,。(4):dCr=KraKC,+aKC+),C(13),K`C`i。,CMC0.SC。:tll/20.5Co=+ln2rKaKIn2:1rKaK(14),,5,InZ,C/rKaK。。,,。LH,r。C。(6)。6,mL,1;55mL,;,1,3:(l),,aKC,aKC《1,(4)::=aKC,;:nIOC/CrKaKt,ln(0C/C)t。。GMmL,rrKaKCGM。(2),,aKCaKC1,(4)aKC,(4);l/:=1.744/C0.1034。GM55mL,1r/=1.744/C+0.1034GM。(3),,aKC,aKC》1,(4):;=rK,,;:Ct,Ct。GM55mL,rrKGM。,,。3iToZ,,,,224。.31;Ceq/、f(1/C,)aLngmiur;G,MITOZaK=5.931xlo“,Q~=7.225mg/g。3.2,LH;LHGM,GM,:1r/=1.744/c+0.1。3.3,GM,GM,。3.4,,。3.5,,。.D」.:,2005AranlendlMA.PhotocatytiedeadiatonOfhehtieidefloxyp”inaqueoussuspensionofiTo:【J」.CaaltysisToday,2005,101(2):187.【J〕.,1999,18(5):434]pelititE.Metaloxidesasphooteatalystsforenvnmendetox-eiatoneonunenst〔J」.Ino.Chem.,1994,15(3):297【5〕MillsA.Anoveoiewofseeondueotrphorocaatlysis【J」.OJumalofotochesandbioloA:Ches,1997,108(5):l[6」l』sh5.tSudyonTio:mediatedphotocaaltededaitonofmethyleneblueJ」.JounralOfhPootCheslytdphotobiolA:Ches,1995,88(4):163.【7」hhebH.phooctatalytiedeadiatonOfviaroustyPesOfdyes(Alins,C,einoanrgeG,MethyleRd,ConRde,MhetyleneBlue)inwaterbyUViarrdiatedtitania【J].ApvliedCaaltysisB:En-vionrmental,2002,39(l):75【8」HenmannJM.Heteorneousphooctatalysis:anemengdiseiplineinvolvingmultiphasesystems[J].Catal.TOdsy,1995,24(4):157〔9]YelenaSagatelian.EnhaneedphoteadationOfdiisopopylmehtylphosphonatebyrhe“Adsorb&Shue”aPpoach〔J〕.JounralofhPotochemisytrandphotobioloA:Chemislyt,2X()5,174(l):253[10]SyliwaMoa.DeeomsitionofnonioinesuarfcatnrinalabnhtnowphotoreactorwithinunobilizediTo:bedApplied【J].CatalysisB:Enviornment,2005,59(4):155〔11〕ilwaMOa.hPooctatalicdegradiatonofeAicdRde18「J」.Desnation,20()5,185(3):449[12】,.〔M〕.:,2〕【13]GuetatlN.phooctaatlytiedationofmehtyloarngeinpreseneeoftitaniumdioxideinueoussuspension.part11:kinetiesstudy[J〕.Desalination,2X()5,185(3):439【14」.「D].:,2005[15〕UuHonin.`netieanalysisofphotoeatalytieoxidationofass-phaseofrmaldehydeovertitaniumdioxide[J」.Cheomsphere,2X()5,60(3):630,...,..J,LI..1,」...L.LesLSotdyonneitcsofhPoot·eaaltyitcDegradaitonofGuaiacolinAqueouSSusPeonofTIOZWANGChang’CHENWendongLlGuiuJIAQingzhu(artmeofEnior~antlcSiccnoadneTchlozlo,injnnUivesriytofcsiccnoadneTehnolog,,n,3《)57)(*Emall:[e-mail])Absatret:hTevhotoeatalytiededationmeehanismofiaacol(G,M)asthemodelOfilinwasinvestigatedusingTIO:asanactivatedhPooteatalystpreparedinthelab.hTekinetieeationofrphotoeatalytiedeadationwasdeirvedasl/r=1.744/C+0.1034bymeasuirnghteadsotioneabilityanddedationonthesuarfeeofTi02.Diseussedtheveareityofhtekinetiesequationiwhthtehalf.lives,itwasfoudnthattheerawsdifferencebetweenthet,1/:measuerdandtl/2ealeulated.IteouldbeexPlianedthathteintemrediateseouldalsobead-sohtedeomPetitivelyonhteTIOZsuafree,andthephotodeeompositionOfGMwasdelay.hTereaetionkinetiesequationseouldbeexPerssedinthreedlffeerfltformsfordlflerntiintialeoneentartions.Keywords:11n;photcoatalytiededation;iaacol:adsotionelibirum;eractionkineties(:)