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911Vol．9No．11201511ChineseJournalofEnvironmentalEngineeringNov.2015*20024030kDＲC。pH。1pH。2。3。X703A1673-9108201511-5322-07SimultaneousremovalofnaturalorganicmatterNOMandleadionⅡinwaterusingchargedultrafiltrationmembranesChenXiuwenFuJingShaoJiahuiSchoolofEnvironmentalScienceandEngineeringShanghaiJiaoTongUniversityShanghai200240ChinaAbstractChargedultrafiltrationmembranesweregeneratedbycovalentattachmentofnegativelychargedgroupstocommerciallyavailableregeneratedcellulosemembraneswithmolecularweightcut-offMWCOof30kDa．HumicacidwaschosenasarepresentativeforNOM．SimultaneousrejectionsofhumicacidandleadionⅡfromwaterwereinvestigatedusingnegativelychargedUFmembranesandtheeffectofpHvalueandcompl-exationbetweenHAandPb2+werestudied．InadditiontheresultsofsimultaneousremovalrejectionsofHAandPb2+usingchargedmembranesandunmodifiedmembraneswerecompared．Thefollowingresultswereobtained1InacidicorneutralsolutionenvironmentwiththeincreaseofpHvaluetherejectionratesofbothhumicacidandleadionincreasedforchargedmembranes．2Whentheleadioncoexistedwithhumicacidtherejec-tionsofHAdecreasedduetothesmallernegativechargeofHA-Pb2+complexcomparedwithHAmolecule．WhiletherejectionsofPb2+ionsincreasedbecausetheywererejectedmorebynegativelychargedmodifiedUFmembraneswhentheycomplexedwithHA．3BecauseoftheelectrostaticrepulsionbetweenhumicacidandthechargedmembranetherejectionsofbothNOMandPb2+werehigherfornegativelychargedmembranesthanthoseforunmodifiedmembranes．KeywordsultrafiltrationnegativelychargedUFmembranesnaturalorganicmatterNOMleadion210761222014－08－202014－09－171991—。E-mailxwchen1991@163.com*E-mailjhshao@sjtu.edu.cnNOM1-3。NOM、。HANOM50%～90%45。2010119。、、。GB25466-20101mg/L0.5mg/L。GB5749-20060.01mg/L6。78。HA、、9-11。12Pb2+。1314HA。15。。。NOM1617125kDa。UF1819。2021ＲCMW-COＲC。ＲCＲC15%NOM60%90%。30kDapH。11.1ＲCMillipore30kD25mm。ＲC22。AldrichNOM18.2MΩ·cmHA-Pb2+。2mg/L。1mg/L。0.1mol/LHClNaOHpH。25℃12h。3-C3H6BrNaAlfa。。SIMT100mg/L。。1.21.2.1Amicon801016.8mL25mm12223。H97-A。UV-2100Unico。1Fig.1SchematicdiagramofUFexperiment0.02～0.1MPa32359600r/min25℃。3-46min。。1JV。JV=VA×Δt1ΔtVΔtA。HAPb2+C1C2Ci。2HAPb2+Ｒi。Ｒi=1－Ci1/2C1+C()221.2.23-22。2h0.1mol/LNaOH15min90%。1.2.3ZetaLDEZetaZetaBeckmanCoulterDelsaNanoC。Zeta。1.2.4XX-KratosKratosAxisUltraDLD。AlKα1486.6eV。hybridmagnification。C1s284.8eV。1.2.5ContrAA700。100ppb。100ppb。1.2.6DropMeterTMprofessionalA-200。22.12.1.1ZetaZeta30kD、ＲCZeta－0.45mV。ＲCZeta－16.09mV。ＲC。2.1.230kDＲCX2。2167eV。。2XFig.2XPSresultsforunmodifiedmembraneandnegativelycharge-modifiedmembrane2.1.33μL2～30°。2.2ZetapH7.0、5.33.5。2mg/LHA1mg/LPb2+pH7.0、5.33.5423511Zeta。1。pH2mg/LHAZeta。pHHAHA-Pb2+Zeta。1pHHA-Pb2+HAZetaTable1ZetapotentialvaluesandmeanparticlesizesofHA-Pb2+mixturesolutionandHAsolutionatdifferentpHvaluespHnmmV2mg/LHA7.0536.1－37.692mg/LHA5.3677.4－24.202mg/LHA3.5893.3－19.012mg/LHA+1mg/LPb2+7.0702.5－28.332mg/LHA+1mg/LPb2+5.3822.8－21.142mg/LHA+1mg/LPb2+3.51224.3－18.192.3pHpHHA-Pb2+HAPb2+3。3pH22。1pH。pHH+H+Zeta。pH。pHH+。pHZeta24。pHPbOH2Ksp=1.43×10－201mg/LpH=6.7。pH=7PbOH2。15pHpH=6～7PbOH2。3pHHA-Pb2+HAPb2+Fig.3HAandPb2+rejectioncoefficientsforHA-Pb2+mixturesolutionusingchargedmembranesatdifferentpHvalues2.4pHpH=5.3HA-Pb2+HAHA4a。HA-Pb2+HAHA。120LMHHA88%67%21%。1。pHpH=5.3HA-Pb2+Pb2+Pb2+4b。Pb2+Pb2+Pb2+。120LMHPb2+69%97%Pb2+28%。52359100%Pb2+。Pb2+。HA-Pb2+。。4pH=5.3HA-Pb2+、HAPb2+HAPb2+Fig.4HAorPb2+rejectioncoefficientsforHA-Pb2+mixturesolutionHAsolutionandPb2+solutionusingchargedmembraneatpHof5.32.5pH=5.3HA-Pb2+5。。＜10%。Zeta－0.45mVZeta－16.09mV。。pH=5.3HA-Pb2+Zeta－21.14mV。5pH=5.3Fig.5HAandPb2+rejectioncoefficientsforHA-Pb2+mixturesolutionusingchargedmembraneandunmodifiedmembraneatpHof5.3pH=7HA-Pb2+6。pHPb2+100%HA。。31pH6235116pH=7Fig.6HAandPb2+rejectioncoefficientsforHA-Pb2+mixturesolutionusingchargedmembraneandunmodifiedmembraneatpHof7pH。2。。3。。1．．200221110-12WangZhifeiHuHaixiu．Discussionontheremovalofnat-uralorganicmatterinthedrinkingwater．WaterPurifica-tionTechnology200221110-12inChinese2．pH．2011SheJingjing．StudiesonthecoagulationcharacteristicsofhumicacidwithdifferentpH．Xi’anMasterDissertationofXi’anUniversityofArchitectureandTechnology2011inChinese3．．200738498-101ZhangHuiYuHaiqin．Foulingofultrafiltrationmembranebynaturalorganicmattersinwater．IndustrialWater＆Wastewater200738498-101inChinese4．．20021667-9ZhangShulinLuoQifang．Studyadvantageofpurifyingtechnologyforaquatichumicacid．UrbanEnvironment20021667-9inChinese5．．200626142-46ZhaoYuanyuanWangZhiWangJixiaoetal．Studiesonultrafiltrationmembraneprocessofsimulatedwastewatercontaininghumicacidorganicsubstances．MembraneSci-enceandTechnology200626142-46inChinese6．．2011384164-165GuoXiaofengWangSanfan．studyonremovingleadIonⅡfromwastewaterbyzeolite．GuangdongChemicalIn-dustry2011384164-165inChinese7SchmeideK．SachsS．BubnerM．etal．InteractionofuraniumVIwithvariousmodifiedandunmodifiednaturalandsynthetichumicsubstancesstudiedbyEXAFSandFT-IＲspectroscopy．InorganicaChimicaActa2003351133-1408．UⅥ．2007416683-688ZhuHaijunMiuJialiZhangDongetal．AdsorptionofUⅥbyhumicacidextractedfromsoil．AtomicEnergyScienceandTechnology2007416683-688inChi-nese9．．2006318151-154LuJingZhuKunZh