酚羟基修饰的超高交联聚苯乙烯树脂对苯酚吸附及脱附性能的研究

,2007,23(3):199~207IONEXCHANGEANDADSORPTION1001-5493(2007)03-0199-09*1,21,2**1,21,21,212100932210038(JN-2)(AmberliteXAD-4)(NDA-150)-(JN-2)TQ425;O647.3A1()[1~8](1)(2)*20061020(20274017)(1979~),,,.E-mail:[e-mail]**E-mail:[e-mail]on20076·200·JN-2JN-2XAD-4NDA-15022.1(WATERS-600WATERS)SSA-3600(THZ-C)()()2.2JN-2[9]-JN-2100.0g-600mL2000mL5.0g1h10.0g343K4h388K8h1%HCl300mL1h8h333K1.3kPa2h(JN-2)2.32.3.1200mg/L400mg/L600mg/L800mg/L1000mg/L200mLXAD-4JN-2NDA-15030.1000g283K303K323K324hqe=(C0Ce)/W2.3.2XAD-4NDA-150JN-238%NaOH303K1BV/h6min233·201·33.13312Table1TypicalPropertiesoftheStudiedAdsorbentsXAD-4NDA-150JN-2BET(m2/g)880906.1926.3(m2/g)3.1529.3532.2(nm)5.832.53.64BJH(nm)7.036.821.6Table2E.AResultCHOXAD-489.789.760NDA-15087.787.463.98JN-288.148.781.123.23.2.1XAD-4NDA-150JN-23(283K303K323K)2Fig.1IRSpectraoftheChloromethylatedCopolymerofStyreneandDivinylbenzenebeforeandaftertheReaction1istheJN-2resinand2ischloromethylatedmacroporouscopolymerofstyrene-divinylbenzeneabcFig.2TheEquilibriumAdsorptionIsothermsofPhenolonXAD-4,NDA-150,JN-2atDifferentTemperature024680.51.01.52.02.5qe(mmol/g)Ce(mmol/L)283K303K323K02468100.51.01.52.02.5qe(mmol/g)Ce(mmol/L)283K303K323K02468100.00.40.81.2283K303K323Kqe(mmol/g)Ce(mmol/L)IonExchangeandAdsorption20076·202·2LangmuirFreundlich[10]Langmuir:1/Qe=1/Qm+1/bCeFreundlich:logqe=logKF+1/nlogCeQm(mg/g)KLLangmuirKFnFreundlich(283K303K323K)XAD-4NDA-150NJ-2LangmuirFreundlich3Table3EvaluateConstantsfortheAdsorptionofPhenolfromWaterontoXAD-4,NDA-150andJN-2ResinatDifferentTemperaturefromtheFreundlichandLangmuirEquationFreundlichisothermLangmuirisothermAdsorbentsT(K)KFnR2Qm(mg/g)b(1/mg)R2283K0.4792.08250.9714184.45.320.993XAD-4303K0.2591.63880.9909165.74.120.996323K0.1391.41500.9784153.92.870.993283K1.1183.03950.9907243.96.750.992NDA-150303K0.8082.35570.9887238.13.930.999323K0.6022.27070.9987200.04.670.990283K1.0862.52840.98072507.010.994JN-2303K0.9632.39810.9797243.95.720.998323K0.7402.06780.9806238.13.880.998XAD-4NDA-150NJ-2R0.98Freundlichn13[11]303K(Ce)1.0mmol/L4.0mmol/LXAD-4NDA-150NJ-23(qe)4Table4AdsorptionCapacitiesofPhenolonthethreeResinsatEquilibriumat303KCe=1.0mmol/LCe=4.0mmol/LXAD-40.2590.603NDA-1500.7591.450JN-20.9611.660Ce=4.0mmol/LJN-2XAD-41.76NDA-15015%Ce=1.0mmol/LXAD-4233·203·NDA-1502.727%[12]1JN-2NDA-150XAD-4LangmuirQm()XAD-4XAD-4JN-2NDA-150JN-23JN-23.2.23Van’tHoff[14]∆HRCeTK0∆HlogCe1/T5340kJ/molNDA-150JN-2XAD-4NDA-150JN-25NDA-150JN-2NDA-150JN-2Table5ThermodynamicsParametersofPhenolAdsorbingonthethreeResins∆G(kJ/mol)∆S(J/mol·k)qe(mmol/g)∆H(kJ/mol)283K323K283K323K0.50-18.1-4.9-3.8-46.7-40.9XAD-41.00-13.6-4.9-3.8-30.7-30.30.50-28.7-7.2-6.1-76.1-66.7NDA-1501.00-23.1-7.2-6.1-60.7-53.10.50-21.7-5.9-5.6-55.7-48.8JN-21.00-15.7-5.9-5.6-34.1-30.0RTHKCe303.2loglog0∆+−=IonExchangeandAdsorption20076·204·4XAD-4JN-2NDA-15038%NaOH1BV/hJN-2NDA-150XAD-445Fig.4DesorptionCurvethethreeResinsAdsorbedPhenolat313KFig.5DesorptionCurvethethreeResinsAdsorbedPhenolat313K4.1JN-2NDA-1500.1BVJN-2JN-2NDA-150XAD-41/3(1)JN-2NDA-150XAD-4(2)JN-2NDA-150HOMOLUMO[15]Chem3Dultra9.0HOMOLUMOLUMOHOMOLUMONDA-150LUMOHOMONDA-150JN-260.00.40.81.2020000400006000080000(BV)(BV)WJN-2NDA-150XAD-40.00.51.01.52.0020000400006000080000(mg/L)(BV)JN-2NDA-150XAD-4233·205·Table6ELUNMOandEHOMOofAdsorbateanddifferentAdsorbentsELUNMO(eV)EHOMO(eV)OH0.403095-9.10552XAD-40.540019-9.38909NDA-150O-0.305463-9.91131JN-2OH0.291126-8.660854.28%NaOHJN-2NDA-150XAD-4JN-2NDA-150XAD-4JN-2NDA-150JN-2(JN-2)()JN-2ROH+OH-RO-+H2OOH+OH-+H2OO-IonExchangeandAdsorption20076·206·51.JN-22.XAD-4NDA-150JN-2LangmuirFreundlichJN-2NDA-150XAD-4JN-23.JN-2JN-2NDA-150XAD-4,JN-2[1],,[J],2002,28(3):155~158.[2],,,()[J],2002,34(1):61~64.[3],,[J],200219(2):187~190.[4],,,[J],2002,31(6):468~471.[5],,,[J],2002,18(1):45~50.[6],,,[J],2000,16(2):140~146.[7],,[J],1995,31(4):598.[8],,[J],1994,14(6):344.[9]LiA.M.,ZhangQ.X.,ZhangG.C.etal.,Chemosphere[J],2002,47:981~989.[10]SlejkoF.L.,AdsorptionTechnology:AStep-by-StepApproachtoProcessEvaluationandApplication[J],NewYork:MarcelDekker,1985,p13.[11],,[M],:,1992,p396~397.[12],,[M],:,1992,p401.[13,,[M],:,1992,p408.[14]Garcla-DelgadoR.A.,Cotouelo-MinguezL.M.,RodfiguezJ.J.,Sep.Sci.Technol.[J],1992,27(7):975~987.[15]JamesS.etal,J.ColloidandInterfaceSci.[J],1969,31(1):116.233·207·STUDYONTHEADSORPTIONANDDE-SORPTIONOFPHENOLUSINGHYPERCROSSLINKEDPOLYMERICADSORBENTMODIFIEDBYPHENOLICHYDROXYLGROUPWANGJinnanLIAiminFEIZhenghaoZHANGBoZHANGQuanxingStateKeyLaboratoryofPollutionControlandResourceReuse,SchooloftheEnvironment,NanjingUniversity,Nanjing210093,ChinaResearchCenterofOrganicToxicSubstanceControlandResourcereuseofJiangsuProvince,Nanjing210038,ChinaAbstract:Thedesorptivefluentcouldn’tbedisposedeasilybecauseofitsdiluteconcentrationanditsadherencetoadsorbentsintheapplicationofresinswiththemethodofadsorption.AcomparisonofpropertiesbetweenthepolystyreneresinmodifiedbyphenolichydroxylgroupandXAD-4andNDA150foradsorbingthephenolintheaqueoussolutionweremade.Theresultsshowthattheperformanceoftheresinmodifiedbyphenolichydroxylgroupisim