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—————————————————————————————————————————————StudyonfluorineremovingcapacitywithmodifiedzeoliteandthermodynamicsYanZonggao,XieYinghui(InstituteofChemicalTechnology,HebeiUniversityofTechnology,Tianjin300130,China),(,300130)[],,,:40~80、,1.38mol/L、24h,,Fe3+1.5mol/L、2h。,、。[];;;[]X131[]A[]1005-829X(2009)12-0041-05Abstract:Theapplicationofthemethods,suchasacidicandalkalitreatment,soakinginFeSO4etc.tothemodificationofnaturalzeolitehasbeenstudied,anditsdefluorinationcapacityhasbeendiscussed.Theoptimalmodifyingapproachhasbeenobtainedasfollows:Firstly,clinoptiloliteof40-80meshesiswashedbydeionizedwater,anddried.Secondly,itisstirredin1.38mol/LH2SO4solutionanddippedfor24h.Thetreatedzeoliteisthenwashedanddried.Attheend,itisboiledwith1.5mol/LofFeSO4solutionundertheconditionofstirringfor2h.Theinfluentialfactorsondefluorizationisdefinedbythecombinationofstaticmethodwithdynamicmethodandtheadsorptionmodeandthermodynamiccharacterduringthedefluorizationprocessisstudied.Keywords:modifiedzeolite;defluorization;adsorption;thermodynamic,,1.0mg/L。,,,;0.5mg/L,;,、、、、,,。,7000,〔1〕。,2912200912IndustrialWaterTreatmentVol.29No.12Dec.,2009100~150mL/L,42h,67.13%36.54%。[][1],.[J].,2001,20(1):4-5.[2],,.[J].,2007,36(2):92-95.[3],,,.[J].,2003,4(12):12-16.[4],,,.———[J].,2007,31(2):106-109.[5].[M].:,2006:150-168.[](1964—),,2005,、、。:022-60601156,E-mail:liqiang19830909@sina.com。[]2009-07-20()41——2009-12,29(12):。,、、、、、、。,、。、、、。,,〔2〕。11.1,,(400~800m2/g)。,。,,。F-Fe3+,Fe3+,。F-,,F-,Fe3+,FeFn3-n(n=1~6),,〔3〕。1.2、、1.2.1(40~80);。1.2.2,,;,,;,,。。:58.88g85.00g,,10mL1∶1pH5.5~6.0(pH),1L。0.2、1mol/L。1.2.3232;pF-1F-;PXS-1;JA5003N,;,;SX2-2.5-10,;DGG-101-1,;D-7401,。1.2.4F-:25mL,50mL,10mL,,mV。CE(1)。lgC=(244.84418-E)/59.2276(1):E———,mV;C———()F-,mg/L。22.1:40~80,,120℃,,,。F-:1.0g100mL、10mg/L,2h,F-〔1〕。2.1.140~80H2SO424h,,;40~80NaOH12h(,)。,H2SO4、NaOHF-1、2。1,F-H2SO41.38mol/L,H2SO41.38mol/L;2,NaOH1.0mol/L。,H2SO4NaOH。1H2SO4F-2NaOHF-42——2009-12,29(12)2.1.2100mLFe3+0、0.5、1.0、1.5、2.0mol/L40~805.0g,2h,Fe3+,120℃,F-,Fe3+F-3。3,Fe3+1.5mol/L,F-。2.1.340~801.38mol/LH2SO4,,5.0g100mL、1.5mol/L2h,。H2SO44。4,H2SO424h,,H2SO424h。,40~80,1.38mol/L24h,,Fe3+1.5mol/L2h,,F-0.73mg/g。〔4-5〕。2.22.2.1500mL,10mg/L500mL,10g,。25mL,F-,F-。5。5,20min,,30min,(),F-3.70mg/L,2h,2h〔1,6-7〕。2.2.2100mL、10mg/L,2h,F-,1。1,,F-,。10mg/L,100mL8.0gF-〔6-7〕。2.2.3pH,pH。,。,,pH。pH1~3、3~6、6~8、8~10≥10。1.0g100mLpH,2h,。pH2。1/g1.02.04.06.08.0/(mg·L-1)5.242.711.461.0260.987/(mg·g-1)0.4760.3640.2140.1500.1132pHF-pH1~33~66~88~10≥10/(mg·g-1)0.3370.3620.3860.2250.0214F-53Fe3+F-,:43——2009-12,29(12)2,、F-,pH,pH10,。OH-F-,,。pH6~8,〔6-7〕。2.2.4F-,CO32-、SO42-、Cl-(,)。100mL10.0mg/L,1.0g,,2h,。3。3,CO32-,CO32-,,F-。Cl-SO42-F-,,F-〔6-8〕。2.32.3.110.0g3,2.0、4.0、8.0mL/min,10.0mg/L,,。10mL,F-10.0mg/L。6。6,200、200、100mL。,F-,2.0、4.0mL/min,,4.0mL/min,〔6-7〕。2.3.210.0g3,4.0mL/min。5.0、10.0、15.0mg/L。,7。7,F-5.0、10.0、15.0mg/L,F-1.0mg/L350、200、150mL,0.163、0.195、0.222mg/g,F-,,〔6-8〕。2.4:6(2g),200mL1、3、5、10、15、20mg/L,25、45、65℃,。(2):qe=(C0-Ce)V/m(2):qe———,mg/g;V———,L;m———,g;C0———F-,mg/L;Ce———F-,mg/L。F-,8。Freundlich〔9〕:qe=kCe1/n。Freundlich,k、,,;n,,n1。,:lnqe=lnk+73/(mg·L-1)/(mg·g-1)/(mg·g-1)CO32-1500.6550.342Cl-1500.6550.621SO42-1500.6550.619644——2009-12,29(12)8。,,20%~50%。、,,。、。()[](1982—),2009,。:15028643164,E-mail:dayan110_@163.com。[]2009-04-07()1/nlnCe,Freundlich4。4,R≥0.995,Freundlich。Freundlich,Freundlich;F-,k,,,;n1,。3(1),,,;,,,,,,。。(2),:40~80、,1.38mol/L(7.5%)24h,,Fe3+1.5mol/L2h,。F-0.021mg/g,F-0.73mg/g。(3)pHF-,,、。F-F-,F-,F-。,;,,。(4)FreundlichF-,F-Fre-undlich,F-,。[][1],,.[J].,2006,23(3):236-239.[2],.[J].,1997,11(3):163-165.[3].[J].:,2005,33(9):91-94.[4].[J].,2004(2):37-39.[5]WangLianfang.OutlineofcontrolpracticeofendemicfluorosisinChina[J].SocialScienceMedicine,1995,41(8):1191-1195.[6].[J].:,2005,23(3):9-11.[7]JohnPB,MariosT.Treatmentofaqueouseffluentforfluoridere-moval[J].J.WaterPollut.ControlFed.,1987,59:191-198.[8],.[J].,2005,24(3):15-17.[9],,.[J].:,2006,34(9):121-124.4Freundlich/KknR298lnqe=0.7017lnCe-1.24450.056951.42510.9998318lnqe=0.6591lnCe-1.49570.031941.51730.9971338lnqe=0.6553lnCe-1.91380.012201.52600.9950≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥≥··———,.CN101244869,:45——
本文标题:改性沸石除氟性能及热力学研究晏宗高
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