高浓度聚合氯化铁PFC中铁的形态分布与转化研究岳钦艳

:2002-02-04:(Q99B05):(1958-),,,,(PFC)岳钦艳,苗晶,高宝玉(,250100):,W,,(PFC)Fe-FerronPFC,(B)n(W)n(Fe)(WFe)PFC,PFC,W,(B)n(W)n(Fe):(PFC);Fe-Ferron;:X7035:A:1001-6929(2002)06-0017-03StudyontheSpeciesDistributionandTransformationofIroninHigh-ConcentrationPolyferricChloride(PFC)YUEQin-yan,MIAOJing,GAOBao-yu(EnvironmentalScienceandEngineeringSchool,ShandongUniversity,Jinan250100,China)Abstract:Byco-polymerization,aseriesofhigh-concentrationpolyferricchloride(PFC)werepreparedwithferricchlorideandsodiumcarbon-ateasrawmaterialsandWasstabilizer.ThespeciesdistributionandtransformationofironinPFChavebeenstudiedbymeansofFe-Ferroncomplexationtimedspectrophotometry.Theinfluencesofthebasicity(B),WFemolarratioandagingtimehavealsobeenstudied.TheresultsshowthatbecauseoftheinteractionsbetweenthestabilizerWandthehydrolysateofironinthehydrolysis-polymerizationprocessofiron,thespeciesdistributionandtransformationofironchangeessentially.Basicity(B),WFemolarratioandagingtimeallhaveinfluencesonspeciesdistributionandtransformationofironinPFC.Keywords:polyferricchloride(PFC);Fe-Ferroncomplexationtimedspectrophotometry;speciesdistribution(PFC),,,,,[1],PFCFerron,7--8--5-,Ferron[2](PFC),Fe-FerronPFC,(B)n(W)n(Fe)(WFe)PFC111:UV-754;pHS-2:FeCl36H2O,Na2CO3,W,,NaAc,Ferron(A.R.)12PFCFeCl36H2O,WNa2CO3n(W)n(Fe)BPFC,FeT()8%,Fe2O323%13Fe-Ferron[3]14[3]156ResearchofEnvironmentalSciencesVol.15,No.6,2002221Fe-Ferron1PFC,2B=15,n(W)n(Fe)PFC,3PFC(B=15,n(W)n(Fe)=012)B:11.0,21.5,32.0;:7d;n(W)n(Fe)=0.121PFCFig.1ReactivecurveofFe-ferron-complexeswithdifferentbasicity(B)1,2,3,PFC:,(A),,1~2h,PFCFe()31n(W)n(Fe):10.04,20.08,30.12,40.15;B=1.5;:1~2h2n(W)n(Fe)PFCFig.2ReactivecurveofFe-ferron-complexeswithdifferentWFemolarratio:11~2h,24~5h,324h,4168h,5336h,6672h;B=1.5;n(W)n(Fe)=0.123PFCFig.3ReactivecurveofFe-ferron-complexesunderdifferentagingtime11)PFCFe()3Table1DistributionofferricspeciesatdifferentagingtimeinthePFCsolution%h1~24~524168336672B=1.0Fea8.787.129.6611.188.087.91Feb14.5914.0416.5218.8717.1817.04n(W)n(Fe)=0.12Fec76.6378.8473.8269.9574.7475.05B=1.5Fea10.777.697.8710.7710.777.05Feb18.7116.9218.4221.6021.1717.81n(W)n(Fe)=0.04Fec70.5275.6973.7167.6368.0675.14B=1.5Fea11.4215.8915.6012.8215.8911.70Feb22.1028.9928.8228.7429.7225.19n(W)n(Fe)=0.08Fec66.4855.1255.5858.4454.3962.39B=1.5Fea16.2714.8613.309.6814.229.04Feb27.1726.4525.9425.2226.9122.39n(W)n(Fe)=0.12Fec56.5658.6960.7665.1058.8768.57B=1.5Fea10.099.7112.307.469.966.21Feb24.7424.7425.1923.3826.3522.17n(W)n(Fe)=0.15Fec65.1765.5562.5169.1663.6971.62B=2.0Fea10.527.918.787.387.122.71Feb27.7226.6128.9027.2826.8921.57n(W)n(Fe)=0.12Fec62.2665.4862.3265.3465.9975.721)PFC8%,15molL181522BFe()31:B15,Fea,FebB,Fec;B15,B,Fea,Feb,Fea,Feb,FecBPFC(FeaFeb)PFC3,FeaFebPFC,(B15)[4],PFS,1987,TangStummPFC,,PFC,PFS[5]23n(W)n(Fe)Fe()31:n(W)n(Fe)012,Fea,Febn(W)n(Fe),Fec;n(W)n(Fe)012,Fea,Febn(W)n(Fe),FecWPFC::Fe3++H2O+Wi-=Fe(OH)W2-i+H+:FeO(OH)FeOH+Wi-=FeO(OH)FeW1-i+OH-:FeO(OH)Fe(OH)2FeWiFe(OH)WFePFCW,Fe():Feb,Fec,Feb[6],WPFCn(W)n(Fe),PFCFe()24Fe()3,PFC,--,Stumm[7],3:a.Fe(H2O)63++OH-=Fe(H2O)5(OH)2++H2Ob.2Fe(OH)2+=Fe2(OH)24+2Fe2(OH)24++2OH-=Fe4(OH)66+i[Fe(OH)]2+={[Fe(OH)]2+}iiFe3++jOH-=Fei(OH)j(3i-j)+c.(am)i[Fe(OH)]2+iFeOOHiFe(OH)3(am)3,Fea,FebFec1,Fea,FebFecFea,Feb,Fec,,PFCFe()3PFC:,Fea,FebPFC336h,14dPFC,14d,3PFC,:a.Fea,FebB(),FecBB15,BFea,Fec,Feb,PFC(FeaFeb)b.n(W)n(Fe)PFCFe()3n(W)n(Fe),Fe()c.,FebFec,,,(B)n(W)n(Fe):[1],.[M].,1999,19(6):26-27.(下转第59页)196:(PFC)[15]WernerI,KogerCS,DeanovicL,etal.Toxicityofmethy-lter-tbutylethertofreshwaterorganisms[J].EnvironPollut,2001,111(1):83-88.[16]UnitedStatesEnvironmentalProtectionAgency.Methyltertiarybutylether(MTBE)Dringkingwater.http:[17]BruceBW,McMahonPB.Shallowground-waterqualitybeneathamajorurbancenter:Denver,Colorado,USA[J].JHydrol(Amst),1996,186(1-4):129-151.[18]BarkerJR,HerstromAA.Formaldehyde:Environmentalpartitioningandvegetationexposed[J].Water,Air,SoilPollut,1996,86(1-4):71-91.[19]StockingAJ,KavanaughMC.ModelingvolatilizationofMTBEfromstandingsurfacewaters[J].JEnvironEng,2000,126(12):1131-1136.[20]PiazzaF,BarbieriA,SaverioVF,etal.Arapidandsensitivemethodformethylter-tbutyletheranalysisinwatersamplesbyuseofsolidphasemicroextractionandgaschromatography-massspectrometry[J].Chemosphere,2001,44(4):539-544.[21]AchtenC,KolbA,PttmannW.Methylter-tbutylether(MTBE)inur-banandruralprecipitationinGermany[J].AtmosEnviron,2001,35(36):6337-6345.[22]DernbachLS.ComplicatedchallengeofMTBEcleanups[J].EnvironSciTechnol,2000,34(23):516A-521A.[23]BarretoRD.GrayKA.Photocatalyticdegradationofmethy-lter-tbutyletherinTiO2slurries:Aproposedreactionscheme[J].WaterRes,1995,29(5):1243-1248.[24]AnnesiniMc,GironiF,MonticelliB.Removalofoxygenatedpolutantsfromwastewaterbypolymericresins:dataonadsorptionequilibriumandkineticsinfixedbeds[J].WaterRes,2000,34(11):2989-2996.[25]VaneLM.AlvarezFR.Removalofmethylter-tbutyletherfromwaterbypervaporation:Bench-andpilo-tscaleevaluations[J].EnvironSciTechnol,2001,35(2):391-397.[26]RubinE,RamaswamiA.ThepotentialforphytoremediationofMTBE[J].WaterRes,2001,35(5):1348