锆改性颗粒活性氧化铝饮用水除氟研究

4242015JournalofBeijingUniversityofChemicalTechnologyNaturalScienceVol．42No．42015*100029Zr-GAAZr-GAA。Zr-GAA2.0g/L32.58mg/gZr-GAA180minGAA25%Zr-GAA1.0mg/LGAA5.25Zr-GAApH4.5～9.7GAASO2－4HCO－3Zr-GAA。TQ085.412014－12－081989*[e-mail]、、12－4。、pH。5。Cheng60.38mmLa-AApH=76.70mg/gAA2.45。、。F－ZIC-SC7、Zr-DOJＲ8、CeO2-ZrO297.51、6.14、175mg/g。。Zr-GAAZr-GAA。11.1GAA0.51mmGAA、、NaOH、NaF、ZrOCl4·8H2O。1.2Zr-GAAZr-GAA0.5、1.0、1.5、2.0、2.5、3.0g/LZrOCl4GAA1∶2512h105℃3h。1.3Zr-GAAZr-GAAMS7700ICPZr-GAAGAAD/Max－2500XＲDCu40kV/200mA2θ=3.0°～90°。1.4100mL。28±2℃120r/minF－。F－1。qt=ρ0－ρtVm1qttmg/gρ0ρttmg/LVLmg。3。22.10.1gZr-GAA2.98、4.95、10.00、15.37、21.00mg/LpH=6.024h1。F－1.0mg/LZr-GAA1.0mg/L10。10～2.0g/L1.0mg/L1.30mg/g3.50mg/g2.0g/L。2.0g/L。1Zr-GAAFig．1AdsorptionisothermsofZr-GAAmodifiedbydifferentconcentrationofzirconium2.0g/LZr-GAAICP32.58mg/gXＲDZr-GAAGAAGAA。2.2Zr-GAApH=6.05.15mg/L0.1gZr-GAAGAAF－。3.10mg/L2。Zr-GAA60min180minGAA90min240minGAAZr-GAA60minGAA25%。Zr-GAA。2Zr-GAAGAAFig．2AdsorptionratesofZr-GAAandGAA2.3Zr-GAA2.98、4.95、10.00、15.37、20.20、25.52、51.53mg/LpH=7.50.2gZr-GAAGAA24hF－3。1.0mg/LZr-GAAGAA5.25。F－Zr-GAAGAAZr-GAA。F－F－GAA11。3Zr-GAAGAAFig．3AdsorptionisothermsofZr-GAAandGAA·14·42.4Zr-GAA2.4.1pH5.15mg/LHClNaOHpH=4.5～10.00.1gZr-GAAGAA24hF－pH4。4pHZr-GAAGAAFig．4EffectofpHondefluoridationofZr-GAAandGAA4aZr-GAApHGAAZr-GAAGAA。pH6.5～8.5pH4.5～9.7Zr-GAApHGAA4.5～7.8Zr-GAA。4bGAAZr-GAAF－pHZr-GAAGAA。Zr-GAApH=4.5～6.5F－3.89mg/g3.45mg/g11%pH=6.5～8.5pH＞8.5。Zr-GAAF－OH－F－ZrOOH2。2.4.2pH=6.010.0mg/L50mL50mLρCa2+=100mg/L、ρMg2+=100mg/L、ρNO－3=40mg/L、ρCl－=500mg/L、ρSO2－4=500mg/L、ρHCO－3=500mg/L《》GB5749—20060.1gZr-GAA24hF－5。5Zr-GAAFig．5Effectsofco-existingionsondefluoridationofZr-GAAZr-GAACa2+、Mg2+Zr-GAACl－、NO－3Zr-GAASO2－4Zr-GAAF－19.6%Zr-GAAF－HCO－3Zr-GAAF－64.0%HCO－3HCO－3F－12。HCO－3Zr-GAA。31Zr-GAA2.0g/L32.58mg/g。2Zr-GAA180minGAA25%Zr-GAAF－1.0mg/LGAA5.25。3Zr-GAApH4.5～9.7·24·2015GAA4.5～7.8Zr-GAAHCO－3＞SO2－4＞Cl－≈NO－3。1MeenakshiMaheshwariＲC．FluorideindrinkingwateranditsremovalJ．JournalofHazardousMaterials2006137456－463．2LoganathanPVigneswaranSKandasamyJetal．De-fluoridationofdrinkingwaterusingadsorptionprocessesJ．JournalofHazardousMaterials2013248/2491－19．3BhatnagarAKumarESillanpM．Fluorideremovalfromwaterbyadsorption—AreviewJ．ChemicalEngi-neeringJournal2011171811－840．4MohapatraMAnandSMishraBKetal．ＲeviewoffluorideremovalfromdrinkingwaterJ．JournalofEnvi-ronmentalManagement200991167－77．5．J．201036710－13．LiYFMengFPYaoＲH．Developmentandapplica-tionoffluorideremovalindrinkingwaterJ．TechnologyofWaterTreatment201036710－13．inChinese6ChengJMMengXGJingCYetal．La3+-modifiedactivatedaluminaforfluorideremovalfromwaterJ．JournalofHazardousMaterials2014278343－349．7SathishＲSＲajuNSＲＲajuGSetal．EquilibriumandkineticstudiesforfluorideadsorptionfromwateronzirconiumimpregnatedcoconutshellcarbonJ．Separa-tionScienceandTechnology2007424769－788．8PaudyalHPangeniBInoueKetal．Adsorptivere-movaloffluoridefromaqueousmediumusingafixedbedcolumnpackedwithZrⅣloadeddriedorangejuiceresidueJ．BioresourceTechnology2013146713－720．9WangJXuWHChenLetal．Excellentfluoridere-movalperformancebyCeO2-ZrO2nanocagesinwateren-vironmentJ．ChemicalEngineeringJournal2013231198－205．10GhoshAChakrabartiSBiswasKetal．AgglomeratednanoparticlesofhydrousCeIV+ZrIVmixedoxidePreparationcharacterizationandphysicochemicalaspectsonfluorideadsorptionJ．AppliedSurfaceScience2014307665－676．11．D．2011．DangD．FluorideremovalbymodifiedgranularactivatedaluminaanditsregenerationD．BeijingBeijingUni-versityofChemicalTechnology2011．inChinese12SchoemanJJMacleodH．TheeffectofparticlesizeandinterferingionsonfluorideremovalbyactivatedaluminaJ．WaterSA1987134229－234．FluorideremovalfromdrinkingwaterbyZr-modifiedgranularactivatedaluminaLINanNanDINGWenMing*ＲENDanDanWANGZhiCollegeofChemicalEngineeringBeijingUniversityofChemicalTechnologyBeijing100029ChinaAbstractThemodificationconditionsforZr-modifiedgranularactivatedaluminaZr-GAAhavebeenoptimizedandtheadsorptionperformanceofZr-GAAwithfluoridesolutionsevaluated．Theresultsshowedthattheoptimalmassconcentrationofzirconiuminthemodifyingsolutionwas2.0g/LandtheresultingzirconiumcontentinZr-GAAwas32.58mg/g．AdsorptiononZr-GAAreachedequilibriumin180minandtheadsorptionrateincreasedatleastby25%whencomparedwithGAA．Theadsorptioncapacityincreasedsignificantlyespeciallyatlowfluorideconcentrationandwhentheequilibriumconcentrationwas1.0mg/LtheadsorptioncapacityofZr-GAAwas5.25timesthatofGAA．Zr-GAAperformedwellatpH4.5－9.7whichbroadensthepHadaptiverange．AnionssuchasSO2－4andHCO－3hadanadverseeffectontheadsorptioncapacityofZr-GAAforfluorideanions．Keywordszirconiummodificationgranularactivatedaluminadrinkingwaterdefluoridation·34·4