pH对厌氧颗粒污泥吸附4氯酚的影响

pH4,*(,100084):pH4.,pH4,pH.pH,4.pH225,6675mgg,pH1027,0260mgg.pH,4Langmuir.pH4LangmuirFreundlich.:4;;:X7031:A:02503301(2007)04079104:20060406;:20060516:(50325824);:(1980~),,,,Email:[e-mail]*,Email:[e-mail]tionBehaviorof4CPontoAnaerobicGranularSludgeGAORuiying,WANGJianlong(LaboratoryofEnvironmentalTechnology,InsituteofNuclearandNewEnergyTechonology,TsinghuaUniversity,Beijing100084,China)Abstract:TheeffectoftheinitialpHvalueonthebiosorptionbehaviorof4CPontoanaerobicgranularsludgewasinvestigatedinthispaper.TheexperimentalresultsindicatedthattheinitialpHvaluewastheimportantparameteraffectingthebiosorptionof4CP,andthebiosorptioncapacityofanaerobicgranularsludgedecreasedwiththeincreaseofpHvalue.Thebiosorptioncapacityof4CPwas6675mggatpH225,whileitwasonly0260mggatpH1027.Theequilibriumisothermof4CPbiosorptionbyanaerobicgranularsludgewasinvestigatedatdifferentpHvalues,andtheresultsshowedthatthebiosorptionbehaviorof4CPcouldbedescribedbytheLangmuirmodelquitewell.ThecoefficientsoftheLangmuirandtheFreundlichequationsof4CPbiosorptionbyanaerobicgranularsludgeatdifferentpHvaluesweregiven.Keywords:4chorophenol;biosorption;anaerobicgranularsludge(CP).,,.,[1~3].,;,UVH2O2TiO2;,.,.,,[2~6]..,,.()(),,[7],[7~10].[7~17].pH4,3pH.111,[6].,3,5min(8000rmin).,20min,.,(TS),19~20gL.28420074ENVIRONMENTALSCIENCEVol.28,No.4Apr.,20071299%44.9mgL100mgL.,1molLH2SO41molLNaOHpH.13.50mL,15mL4,.5mL10mL4,pH.,150rmin4h(4h).,(8000rmin)5min,045m,4.25.pH4.(q,mgg)(ce,mgL).1444(HPLC).221pH4,pH1.,[5,12~14].,pH,4,1.1,4pH.pH,.pH,4,pH2256675mgg,pH,,pH1027,0260mgg.,pH.,4,41,2.4pH.pH1pHFig.1EffectofpHonthebiosorptioncapacity,4,pH,4.,,pH.,.pH,,,4(OHCl),.pH,,4,,,4,.pH,,pH[5,7,15].,.,pH.2.2pHpHpH,pH,,23pH,4FreundlichLangmuir.23,pH,4.1LangmuirFreundlichpH4CP.1,pH,4792282pH4CPFreundlichFig.2Freundlichequationsof4CPbiosorptionontoanaerobicgranularsludgeatdifferentpHvalues3pH4CPLangmuirFig.3Langmuirequationsof4CPbiosorptionontoanaerobicgranularsludgeatdifferentpHvalues1pHLangmuirFreundlich(t=25)Table1LangmuirandFreundlichequationsatdifferentpHvaluespHFL3.6lnq=0.4358lnce+0.0424(R2=0.8675)1q=1.956ce+0.1364(R2=0.9452)6.5lnq=0.8178lnce-3.0482(R2=0.9695)1q=32.872ce+0.1583(R2=0.9952)11.7lnq=12716lnce-57161(R2=09049)1q=15986ce-09671(R2=09594)LangmuirFreundlich.,LangmuirFreundlich(R2LR2F).23pHpHLangmuirFreundlich,1,pH,2.pHFreundlichKF1n,KFpH,1npH.Freundlich,KF,n.,pH,(KF),(n).,pHLangmuir,,pHqmaxb.Langmuir,qmax,b,b.2pHLangmuirFreundlich(t=25)Table2ComparisonbetweenparametersofLangmuirequationandFreundlichequationatdifferentpHvaluespHFLKF1nR2qmaxbR23609866046140867577760006409452650047408178096956317100048099521170003312716090491034000060095943(1)pH,pH4,pH.FKFnpH,LqmaxbpH.(2)pH,4LangmuirFreundlich,,LangmuirFreundlich(R2LR2F).:[1].[M].:,2002.248~299.[2]WangJianlong,QianYi,HoranN,etal.Bioadsorptionofpentachlorophenol(PCP)fromaqueoussolutionbyactivatedsludgebiomass[J].BioresourceTechnology,2000,75:157~161.[3]AbburiK.AdsorptionofphenolandpchlorophenolfromtheirsingleandbisoluteaqueoussolutionsonAmberliteXAD16resin[J].JournalofHazardousMaterials,2003,B105:143~156.[4]JungMinWoo,AhnKyuHong,LeeYonghun,etal.Adsorptioncharacteristicsofphenolandchlorophenolsongranularactivatedcarbons(GAC)[J].MicrochemicalJournal,2001,70:123~131.[5]AksuZ,YenerJ.Acomparativeadsorptionbiosorptionstudyofmonochlorinatedphenolsontovarioussorbents[J].WaterManagement,2001,21:695~702.7934:pH4[6].[J].,1996,55(1):18~22.[7]AksuZ.Applicationofbiosorptionfortheremovaloforganicpollutants:areview[J].ProcessBiochemistry,2005,40:997~1026.[8]BenoitP,BarriusoE,CalvetR.Biosorptioncharacterizationofherbicides,2,4Dandatrazine,andtwochlorophenolsonfungalmycelium[J].Chemosphere,1998,27(7):1271~1282.[9]DenizliA,CihangirN,TuzmenN,etal.RemovalofcholorphenolsfromaquaticsystemsusingthedriedanddeadfungusPleurotussajorcaju[J].BioresourceTechnology,2005,96:59~62.[10]KennedyKJ,PhamTT.EffectofanaerobicsludgesourceandconditiononbiosorptionofPCP[J].WaterResearch,1995,29(10):2360~2366.[11]NingZ,FernandesL,KennedyKJ.Chlorophenolsorptiontoanaerobicgranulesunderdynamicconditions[J].WaterResearch,1999,33(1):180~188.[12],,,.[J].,1998,17(1):34~37.[13]AksuZ,YenerJ.Investigationofthebiosorptionofphenolandmonochlorinatedphenolsonthedriedactivatedsludge[J].ProcessBiochemistry,1998,33(6):649~655.[14]SinclairGM,PatonGI,MehargAA,etal.LuxbiosensorassessmentofpHeffectsonmicrobialsorptionandtoxicityofchlorophenols[J].FEMSMicrobiologyLetters,1999,174:273~278.[15]KennedyKJ,LuJinghua,MohnWW.Biosorptionofchlorophenolstoanaerobicgranularsludge[J].WaterResearch,1992,26(8):1085~1092.[16],,,.[J].,1998,18(3):248~251.[17],,.(PCP)[J].,1999,19(1):5~8.79428