不同污泥对印染废水中残余染料的吸附特性马捷汀

Vol.30,No.5,20112011305160-165WaterPurificationTechnology[]8632008AA06250151008083[]1990-。[e-mail]。[][e-mail]。。103×106~4×106m3／d35%[1]。、、。、、[2-4]。、、、、、[5-7]、、、、。。121.2016202.200433、、、X-4GLEPS。90min250mg／L13350mg／g。FreundlichR20.828~0.947LangmuirR20.924~0.983BETR20.053~0.516。X-4GLEPS32.5%BEPSSEPS。EPSX703A1009-0177201105-0160-0006AdsorptionCharacteristicsofDifferentKindsofSludgeforResidualDyesinPrintingandDyingWastewaterMaJieting1,DaiRuihua2(1.SchoolofEnvironmentalScienceandEngineering,DonghuaUniversity,Shanghai201620,China;2.DepartmentofEnvironmentalSciencesandEngineering,FudanUniversity,Shanghai200433,China)AbstractTheadsorptionofadyenamedCationicBrightYellow,byfourkindsofsludgeincludingactivatedsludge,anaerobicsludge,driedactivatedsludge,anddriedanaerobicsludgewasinvestigatedinthispaper.Therolesofextracellularpolymericsub－stances(EPS)forthebiosorptionofactivatedsludgeandanaerobicsludgewerefurtherstudied.Theresultsshowthattheequilibriumbetweendyeanddifferentkindsofsludgeisachievedwithin90min.Theadsorptionofactivatedsludgeisthebest,whilethatofanaerobicsludgeistheworst.Whentheconcentrationofsludgeis250mg／L,theadsorptioncapacityisupto133mg／gand50mg／g,respectively.TherelationbetweenfourkindsofsludgeadsorptionamountandremainedconcentrationofthedyecanbedescribedbybothFreundlichmodel(R2=0.828~0.947)andLangmuirmodel(R2=0.924~0.983),whichcan’tbedescribedbyBETmodel(R2=0.053~0.516).AccordingtoLangmuirisotherm,themaximumadsorptionamountofactivated,driedactivated,anaerobic,anddriedanaerobicsludgeis526,455,132and68mg／g,respectively.TheamountofdyeinEPSisover32.5%,andBEPSplaysamoreimportantrolethanSEPSforadsorptionofanaerobicsludgeandactivatedsludge.Keywordsadsorptionsludgeextracellularpolymericsubstances(EPS)residualdye160--DOI:10.15890/j.cnki.jsjs.2011.05.005WATERPURIFICATIONTECHNOLOGYVol.30,No.5,2011October25th,2011、[8-9]。、、、。。extracellularpolymericsubstances,EPS。EPSEPS2solubleextracel－lularpolymericsubstances,SEPSboundextracellularpolymericsubstances,BEPS[10]。Liu[11]EPSZn2+、Cu2+、Cr3+、Ni2+CrO2-4。Comte[12]SEPSBEPSCu2+、Pb2+Ni2+SEPSCu2+、Pb2+Ni2+BEPS。EPSSEPSBEPS。、、、X-4GLX-4GLEPS。11.113.2g／L。2“863”45.2g／L。3110℃。1.2X-4GLX-4GL、。1.325±2℃6200mL1.74g／L。120r／min。5、10、30、60、90、120min5mL4000r／min5min。EPS。EPSX-4GL。1.4X-4GL731。SEPS[10,13]BEPS。SEPSBEPSEPS。EPS、、、DNA[14][13]Lowry[15]DNA[16]。22.1X-4GL0.35g50、100、150、200、250mg／LX-4GL200mL5、10、30、60、90、120min5mLX-4GL。1。1aX-4GL10min20min。1b10min10~30min30~60min60min60minX-4GL。1c10min161--Vol.30,No.5,2011.60min。1d10min10~60min90min。Chu[17]X-4GL4h4h。、。20minX-4GL、90min。90min。X-4GL。250mg／L、、X-4GL133、130、8050mg／g。Chu[17]2g／L、X-4GL500mg／L105.6mg／g。。2.2qmg／gCemg／L。、、X-4GLLangmuirFreundlich21。21X-4GL。49mg／L187mg／g1X-4GLFig.1EffectofDifferentSludgeonCationicBrightYellowX-4GLwithTime0306090120150／mina／mg·g-120016012080400501001502002500306090120150／minb／mg·g-120016012080400501001502002500306090120150／minc／mg·g-120016012080400501001502002500306090120150／mind／mg·g-12001601208040050100150200250162--WATERPURIFICATIONTECHNOLOGYVol.30,No.5,2011October25th,20112FreundlichLangmuirFig.2FreundlichandLangmuirAdsorptionIsotherm33mg／g5.7。。49mg／L49mg／L。2FreundlichR2=0.828~0.947LangmuirR2=0.924~0.983LangmuirFreundlichX-4GL。BETR2=0.053~0.516X-4GL。1Freundlich1／n0.42~0.79。KfKf。Kf11.05Kf2.91。Langmuir526mg／g455mg／g、132mg／g68mg／g。X-4GL、。LangmuirQ0×b。6.71L／mg4.5、4.273.05L／mg。X-4GLX-4GL。X-4GL。EPS。EPS“”。。EPSEPS。2.3EPSEPS。EPS。EPS3。EPSEPSDNAEPSDNAEPS7.5%EPSDNA0.4%。EPS137mg／gVSSEPS102mg／g。1357lnq65432lnCeFreundlich0.050.10.150.20.251／q0.080.060.040.0201／CeLangmuir01FreundlichLangmuirTab.1FittedResultsbyFreundlichandLangmuirModel11.0510.262.916.520.730.460.790.420.9240.8280.9470.8960.9800.9240.9830.970Kf1／nR2Q0／(mg·g-1)b／(10-2·L·mg-1)Q0×b／(L·mg-1)R2FreundlichLangmuir526132455681.272.320.332.326.713.051.491.57163--Vol.30,No.5,2011。Liu[11]75EPS92%。3BEPSSEPSBEPS99.6mg／gSEPS2.84mg／g35BEPS131.99mg／gSEPS4.55mg／g29。SEPSBEPS。SEPSBEPS。SEPSBEPSSEPSBEPSEPS。2X-4GLSEPS、BEPSEPS。2SEPS、BEPS、EPS2.5%~5.8%、9.0%~11.7%、11.6%~17.5%SEPS、BEPS、EPS7.1%~9.4%、13.0%~23.1%、20.2%~32.5%。X-4GLSEPS、BEPS、EPS。。X-4GL100mg／LEPS17.5%。250mg／LEPS32.5%。EPS。SEPSBEPSX-4GLBEPSSEPS。EPS3EPSFig.3CompositionofEPSfromActivatedSludgeandAnaerobicSludgeSEPSBEPSEPSSEPSBEPSEPSEPS／mf·g-11601401201008060402002X-4GLSEPS、BEPSEPSTab.2AdsorptionAmountofSEPS,BEPSandEPSforCationicBrightYellowX-4GL1001502002505.83.83.02.511.79.09.39.117.512.912.311.6134014071808301076901201391111261672197.17.27.89.414.213.018.623.121.220.226.532.5133918842248297692117184253178235338459／mg·L-1SEPSBEPSEPSSEPSBEPSEPSSEPSBEPSEPSSEPSBEPSEPS／%／mg·g-1／%／mg·g-1EPS。SEPSBEPSSEPSBEPS17.5SEPSBEPS13.7。250mg／LSEPS3010mg／g。EPSBEPS、EPSSEPSBEPS。SEPSBEPS2.84、99.6mg／gVSSSEPSBEPS4.55131.99mg／gVSSSEPSBEPSSEPSX-4GLBEPSSEPS。Comte[12]SEPSCu2+、Pb2+Ni2+.DNA164--WATERPURIFICATIONTECHNOLOGYVol.30,No.5,2011October25th,2011BEPS。EPS32.5%。SEPSBEPSSEPSEPSBEPSEPSBEPS。。[18][19]。31、、X-4GL90min250mg／L133mg／g50mg／g。2、、X-4GLFreundlichLangmuirBETR2=0.053~0.516。Langmuir526mg／g455mg／g、132m