离子交换树脂对铀的静态和动态吸附行为研究-胡鄂明

29220156JournalofUniversityofSouthChinaScienceandTechnologyVol.29No.2Jun.20152014－11－232012sk31551972－．．1673－0062201502－0042－05421001Φ40mm×1200mm．FreundlichLangmuir1．87．Bohart－Adams、Wolborska0．92．．TL212.3+1BStudyofIonExchangeＲesin'sStaticandDynamicAdsorptionBehaviorforUraniumⅥHUE-mingZHANGWan-guiWANGQing-liangSHAOEr-yanLIANGJian-longKeyDisciplineLaboratoryforNationalDefenceforBiotechnologyinUraniumMiningandHydrometallurgyUniversityofSouthChinaHengyangHunan421001ChinaAbstractAΦ40mm×1200mmadsorptiondevicewasusedtosimulatetheactualurani-umhydrometallurgyprocessinindustrialproductionwiththebreakthroughcurvegotinanionexchangeadsorptionfixedbedandthestaticadsorptionexperimentwascarriedouttomeasureequilibriumadsorptionquantityunderdifferentconcentration．FreundlichandLangmuiradsorptionisothermmodelsareappliedtofitexperimentalequilibriumdatawhichshowsthatbotharesuitabletodescribetheadsorptionofionexchangeresinforura-niumandtheprocessoftheadsorptionofuraniumiscontrolledbyliquidfilmdiffusionandholediffusiontogetherandthedynamicadsorptioncapacityisabout1．87timesthatofthestaticadsorptioncapacity．BohartAdamsmodelandWolborskamodelarecarriedouton2921thebreakthroughcurvefittingofwhichthecorrelationcoefficientsareabove0．92theer-rorbetweenresinadsorptioncapacityofmodelandLiquidmethodissmall．Thisarticleputsforwarapointtoexplainthedifferencebetweenthestaticadsorptionanddynamicad-sorption．keywordsionexchangeresindynamicadsorptionstaticadsorptionuranium0．1．．．2-4．Bohart-Adams、Wolborska．．11．11g50．0%～60．0%4．05mmol/g0．71g/mL0．63-1．25mm95．088、73．76、59．52、45．28、31．03mg/L500mL．1000r/min．36h．45．28m/L31．03mg/L88mg/L73．76mg/L500mL36h1q．q=c0－cVLwk+q01c0mg/Lcmg/LVLLwgq0g/LkL/g1g．1．2Φ40mm×1200mm1L．17mg/L12L/h24h112h11．1Fig．1Schematicdiagramofdynamicadsorption、、．22．1FreundichLangmuir．Freundichqc=kC1/ne33420156lnqe=1/nlnCe+lnk4Langmuirqe=aqm1+aCe5Ceqe=Ceqm+1aqm6qeg/LCemg/Lk、n、aqmg/L．2．2．56-12．LDF、、macroscopicmodel、13．Bohart-Adams5wol-borska14．2．2．1Bohart-AdamsBohart-Adams7．t=qmZC0u－1knC0lnC0C－17C0Cmg/LZcmknL/mg·hthqmmg/Lucm/h．2．2．2WolborskaWolborskaPustelnik．8．lnCC0=βLC0t/qm－βLHu8C0Cmg/LHcmβLh－1thqmmg/Lucm/h．33．1FreundichLangmuir231．2FreundlichFig．2TheadsorptionisothermofFreundlich3LangmuirFig．3TheadsorptionisothermofLangmuir1FreundlichFreundlichTable1TheparameterofFreundlichandFreundlichsadsorptionisothermＲ2n/qmk/aFreundlichlnqe=0．6903lnCe+1．89980．97451．4486．6846LangmuirCe/qe=0．0103Ce+0．19110．976093．240．058442921FreundlichFreundlich．1LangmuirLangmuir．2～3FreundlichLangmuirＲ20．97FreundlichLangmuir．3．24Bohart-Adams、Wolborska．4Fig．4ThediagramofBreakthroughcurve3．2．1Bohart-AdamsBohart-Adams．5Bohart-Adams2．5t～lnC0/C－1Fig．5Thediagramoft～lnC0/C－12Bohart-AdamsTable2TheparameterofBohart-AdamsmodelＲ2qmkt=296．0711lnC0/C－1－31．72950．933360．390．0019817mg/LBohart-Adams60．39g/L62．25g/L2．99%0．00198L/mg·h．Ｒ20．9333．3．2．2WolborskaWolborska6Wolborska3．6t～lnC0/CFig．6Thediagramoft～lnC0/C3WolborskaTable3TheparameterofBohart-AdamsmodelＲ2qmβLlnC0/C=0．02032t－7．4580．952374．9388．15Wolborska17mg/L74．93g/L62．25g/L20%．Ｒ20．9523Bohart-Adams5420156．3．317mg/L33．28g/L17mg/L62．25g/L．1．87．．411．87．2FreundlichLangmuir．3Bohart-Adamswolborska．4．1．M．1986．2．J．1996476727-742．3．J．1996472178-183．4ZouWHZhaoLZhuLetal．AdsorptionofuraniumⅥbygrapefruitpeelinafixed-bedcolumnexperi-mentsandpredictionofbreakthroughcurvesJ．Ｒadio-analNuclChem．20132951717-727．5XuZCaiJGPanBC．Mathematicallymodelingfixed-bedadsorptioninaqueoussystemsJ．JournalofZhe-jiangUniversity-SCIENCEA．2013143155-176．6．HZ816J．200735119-12．7．J．200014165-70．8．J．201130S41-45．9．SP825SJ．2012283257-265．10．J．200532281-84．11．J．199920382-85．12SahaDBhoowalADattaS．Artificialneuralnetworkmodelingoffixedbedbiosorptionusingradialbasisap-proachJ．HeatMassTransfer2010464431-436．13．D．2005．14LawranceSBajpaiJBajpaiAK．DesigningfixedbedcolumnandbatchstudiesofchitosannanoparticlesfordefluoridationofdrinkingwaterJ．JournalofDisper-sionScience＆Technology20113291256-1265．64