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1、JournalofHazardousMaterials171(2009)815–819ContentslistsavailableatScienceDirectJournalofHazardousMaterialsjournalhomepage:www.elsevier.com/locate/jhazmatRemovalof?uoridefromaqueousenvironmentbymodi?edAmberliteresinImamBakhshSolangi,ShahabuddinMemon?,M.I.BhangerNationalCenterofExcellenceinAnalyt
2、icalChemistry,UniversityofSindh,Jamshoro76080,PakistanarticleinfoabstractArticlehistory:Fluorideindrinkingwaterabovepermissiblelevelisresponsibleforhumanbeingaffectedbyskeletal?u-Received11February2009orosis.Inthisstudy,AmberliteXAD-4TMhasbeenmodi?edbyintroducingaminogroupontothearomaticReceived
3、inrevisedform11April2009ringforitsapplicationin?uorideremediation.Characterizationofthemodi?edresinwasmadeby,FT-IRAccepted15June2009andelementalanalysis(CHNS)techniques.ThepH9wasoptimumvalueforquantitativesorptionof?uo-Availableonline21June2009rideinbothbatchandcolumnexperiments.Thedesorptionof?
4、uoridewasachievedbyusing10%HCl.Thebatchandcolumnsorptionstudiesof?uoridewithmodi?edresinwerecarriedouttoevaluatesorptionKeywords:isothermstoo.ThusequationisothermssuchasLangmuir,Freundlich,andDubinin–Radushkevich(D–R)Fluorideremediationweresuccessfullyusedtomodeltheexperimentaldata.Thesorptionca
5、pacityofmodi?edAmberliteTharDesertXAD-4resinwasfoundas5.04×10?3molg?1.FromtheD–Risothermparameters,ithasbeenevaluatedAdsorptionisothermsSolidphaseextractionthattheuptakeof?uoridebymodi?edresinoccursthroughionexchangeadsorptionmechanism.TheIonchromatographystudywillcontributetowardtheremovalof?uo
6、ridefromtheaqueousenvironmentaswellasinthe?eldIonexchangeresinofanalyticalandenvironmentalchemistry.?2009ElsevierB.V.Allrightsreserved.1.IntroductionVariousresearchers[4,17]haveemphasizedtheadvantagesofsolidphaseextraction(SPE)overothertechniquesandinparticularFluorideindrinkingwaterhassigni?can
7、tadvantagesaswelloverliquid–liquidextraction.Chelatingresinshavebeenfrequentlyasdetrimentaleffectstohumanhealthdependingonitsconcen-usedinSPE’sastheyprovidegoodstability,highsorptioncapacitytration.Fluoridehasmajorroleforthe
