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1、Availableonlineatwww.sciencedirect.comJournalofHazardousMaterials153(2008)107113Separationoffluoridefromaqueoussolutionbyelectrodialysis:EffectofprocessparametersandotherionicspeciesNalanKabaya,∗,Ozg¨urArar¨b,SabaSamatyab,UmranY¨uksel¨b,MithatYuksel¨aaEgeUniversity,ChemicalEngine
2、eringDepartment,FacultyofEngineering,Izmir35100,TurkeybEgeUniversity,ChemistryDepartment,FacultyofScience,Izmir35100,TurkeyReceived23August2006;receivedinrevisedform9August2007;accepted10August2007Availableonline15August2007AbstractRemovaloffluoridefromaqueoussolutionbyelectrodia
3、lysiswasstudied.Appliedvoltage,feedflowrate,fluorideconcentrationinthesolutionandeffectoftheotheranionsassulfate,chloridewereinvestigatedasexperimentalparametersonfluorideremovalfromaqueoussolution.Theseparationperformancewasevaluatedintermsofmasstransferandenergyconsumption.Itwaso
4、btainedthattheseparationperformanceincreasedwhentheinitialconcentrationoffluorideinthefeedsolutionincreased.Percentremovaloffluorideincreasedastheappliedpotentialincreased.However,theeffectoffeedflowratewasnotapparentintherangeofappliedfeedflowrate.Separationoffluoridewasinfluencedbyc
5、hloridebutnotbysulfateions.©2007ElsevierB.V.Allrightsreserved.Keywords:Electrodialysis;Fluoride;Separation;Ionexchangemembranes;Water;Wastewater1.Introductionsuchasreverseosmosis[13,14],nanofiltration[15],Donnandialysis[16]andelectrodialysis[17,18]havebeensuggestedFluorideintheen
6、vironmentoccursthroughnaturalpresenceforfluorideremoval.Mostmethodsforthefluorideremovalintheearthscrustandindustrialactivities,especially,semicon-sufferfromoneofthefollowingdrawbacks:highinitialcost,ductor,electroplating,aluminum,glass,ceramicandfertilizerslackofselectivity,lowca
7、pacity,andcomplicatedorexpensiveindustries[1,2].Thedischargeofsuchwastewaterleadstotheregeneration.Ofthemanymembraneprocessesavailableforfluoridecontaminationofsurfaceandgroundwater.Theopti-theseparationofionsfromsolutions,onlytwo,reverseosmo-mumfluorideionlevelindrinkingwaterforg
8、eneralgoodhealthsis(RO)andelectrodialysis(ED),h
