掺Fe（Ⅱ）羟基磷灰石对水溶液中Pb（Ⅱ）吸附性能研究-豆柴文库

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掺Fe（Ⅱ）羟基磷灰石对水溶液中Pb（Ⅱ）吸附性能研究
Title:StudyontheAdsorptionPerformanceofFe(II)-DopedHydroxyapatiteforPb(II)fromAqueousSolutions
Abstract:
Heavymetalpollution,especiallylead(Pb),posessignificantriskstohumanhealthandtheenvironment.Adsorptiontechniquesareconsideredeffectiveandefficientfortheremovalofheavymetalsfromaqueoussolutions.Inthisstudy,theadsorptionperformanceofFe(II)-dopedhydroxyapatite(Fe-HAP)forPb(II)wasinvestigated.TheFe(II)-dopedhydroxyapatitewaspreparedthroughasimpleco-precipitationmethod,anditsstructuralandmorphologicalpropertieswerecharacterized.Theeffectsofvariousfactorssuchasinitialconcentration,pH,contacttime,andtemperaturewerestudiedtounderstandtheadsorptionmechanism.TheresultsshowedthatFe-HAPexhibitedexcellentadsorptioncapacityandefficiencyforPb(II)removal,makingitapromisingmaterialforheavymetalremediation.
1.Introduction:
Heavymetalpollutionisaglobalenvironmentalconcernduetoitsadverseeffectsonhumanhealthandecosystems.Amongvariousheavymetals,lead(Pb)ishighlytoxicandcancauseseverehealthissues,suchasdamagetothecentralnervoussystem,kidneydamage,anddevelopmentaldisorders.Traditionaltechniquesforheavymetalremoval,suchasprecipitation,electrochemicaltreatment,andmembraneseparation,areoftenexpensiveandnotenvironmentallyfriendly.Therefore,thedevelopmentofnovelandefficientadsorbentsforheavymetalremovalfromaqueoussolutionsisofgreatsignificance.
2.MaterialsandMethods:
2.1SynthesisofFe(II)-dopedHydroxyapatite
Fe(II)-dopedhydroxyapatite(Fe-HAP)wassynthesizedthroughaco-precipitationmethodusingcalciumnitratetetrahydrate,di-ammoniumhydrogenphosphate,andferroussulfateheptahydrate.Thesynthesisprocessinvolvedthepreparationofacalciumphosphatesuspension,followedbytheadditionoftheFe(II)solutionandsubsequentpHadjustment.Theresultingproductwaswashed,dried,andcalcinedataspecifictemperature.
2.2Characterization
TheobtainedFe-HAPwascharacterizedusingvarioustechniques,includingX-raydiffraction(XRD),scanningelectronmicroscopy(SEM),andenergy-dispersiveX-rayspectroscopy(EDS).Thesechara