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当前位置:首页 > 商业/管理/HR > 项目/工程管理 > FeOOH催化臭氧氧化滤后水中NOM的小分子副产物的生成鲁金凤
FeOOHNOM1,2,1*,1,1,3(1., 150090;2., 100084;3., 150000):、6(NOM),(FeOOH)NOM、.FeOOHNOMDOCSUVA.FeOOHNOM.,(HON)、、,NOM.NOM,.HON、71.6%,DOC78.6μgmg.NOMDOCDOCDOC,NOM.:;NOM;;;;;:X703.1 :A :0250-3301(2009)03-0765-06:2008-03-10;:2008-09-26:(50578051):(1980~),,,,E-mail:lujinfeng625@126.com*,E-mail:majun@hit.edu.cn LowMolecularWeightOxidationBy-productsProducedDuringCatalyticOzonationwithFerricHydroxideofNOMFractionsIsolatedfromFiltratedWaterLUJin-feng1,QIUJiao2,MAJun1,ZHANGTao1,CHENZhong-lin1,WANGHuan3(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;2.BeijingGuohuanTsinghuaEnvironmentalEngineeringDesignandResearchInstitue,Beijing100084,China;3.HarbinWaterworksShaoheCo.Ltd.,Harbin150000,China)Abstract:Naturalorganicmatter(NOM)inafilteredriverwaterfromawatertreatmentplantwasisolatedandfractionatedintosixtypesoffractions.Theaimoftheworkistoinvestigatetheformationofthelowmolecularweight(LMW)oxidationby-products(i.e.aldehydes,ketonesandketoacids)afterferrichydroxide-catalyzedozonationofindividualNOMfractions.Resultsshowedthatcatalyticozonationcouldimprovethereductionofthedissolvedorganicmatter(DOC)andspecificUVabsorbance(SUVA)at254nmcomparedwithozonationalone.However,catalyticozonationwithferrichydroxidecouldnotproducelessLMWoxidationby-productsthanozonation.Hydrophobicneutral(HON)producedmuchhigheryieldsoftheLMWoxidationby-productsthanotherfractionsbothduringcatalyticozonationandozonationalone,whilethebasicNOMfractionsformedrelativelylowerproductionsoftheseby-products.Likethecaseofozonationalone,thepredominantcontributorsfortheyieldsofaldehydesandketoacidsformedincatalyticozonationwereformaldehydeandpyruvicacid,respectively.AmongtheseNOMfractions,HONproducedthehighestyieldsoftheformaldehydeandpyruvicacidaftercatalyticozonation.TheyieldofformaldehydefromHONwasupto71.6%ofthetotalaldehydesandketones,andthepyruvicacidconcentrationofHONwas78.6μgmgaftercatalyticozonation.Inaddition,NOMfractionsbecamemorebiodegradableaftercatalyticozonation,becausethepercentoftotalLMWby-productscarboninthefinalDOCaftercatalyticozonationwashigherthanozonationalone.Keywords:catalyticozonation;NOMfractions;FeOOH;aldehydes;ketones;ketoacids;biodegradability ,,..,DOC,.(NOM),,NOMDOC.(DBPs),.DOCDBPs.,NOM.NOM[1],30320093 ENVIRONMENTALSCIENCEVol.30,No.3Mar.,2009DOI:10.13227/j.hjkx.2009.03.040.,、[2].,,[3].NOM..,NOM.(FeOOH)、(·OH)、,[4].(THMsFP)(HAAsFP),THMsFPHAAsFP,DOC[5,6].DBPsNOM.NOMFeOOH,.NOM,,NOM.,、NOM.NOM,、、NOMXAD、,6NOM,(hydrophobicacid,HOA)、(hydrophobicbase,HOB)、(hydrophobicneutral,HON)、(hydrophilicacid,HIA)、(hydrophilicbase,HIB)、(hydrophilicneutral,HIN).6NOMFeOOH、.1 NOM9、.,50000,2000L.NOM[7].,NOM,(HA).XAD-8、XAD-4、AG-MP-50DuoliteA-7,6NOM,HOA、HOB、HON、HIA、HIBHIN.6NOM40℃,NaOHHClO4pH=7.0,4℃.FeOOH[4],0.075~0.3mm.X-(XRD)α-FeOOH.O3XFZ-58I,.(18℃),,O3[λ=258nm,ε=3000cm-1·(molL)-1],O3.O3.50mL50mLNOM(DOC3mgL),1.7mgmg(DOC,).,,,300mgL.,,18℃.10min,DOC,.UV254.(1μm,Whatman).、USEPAMethod556.1.O-(2,3,4,5,6-pentafluorobenzyl)hydroxylaminehydrochloride(PFBHA,Aldrich),PFBHA().GCMS(GC:Agilent6890N,MS:Agilent5973MSD,HP-5MS:0.25mm×30m×0.25μm)(EI),Huang[8]、.GCECD(6890N,HP-5column30m×0.25mm×0.25μm,Agilent)、.、、、(Aldrich)ACS.5~500μgL.GCECD、:0.56μgL,0.44μgL,0.64μgL,0.72μgL,0.91μgL.PFBHA(Aldrich),MTBE766 30(Aldrich),PFBHAN-(tert-butyldimethylsilyl)-N-methyltrifluoroacetamide(MTBSTFA)(1%tert-butyldimethylchlorosilane)(Aldrich).GCMS(6890NGC5973MSD,HP-5masscolumn30m×0.25mm×0.25μm,Agilent)EISax[9].MSD(SIM),mz:181,326;181,341;181,427,484.3(Aldrich)ACS.5~500μgL.GCMS、:0.56、0.310.47μgL.DOCTOC-VCPH,UV254752.2 2.1 NOMNOMDOCDOC55%.1NOM.HOAHONNOM(DOC),4%,S'wietlik[7]NOM,.NOM.1 NOMTable1 CharacteristicsoftheisolatedNOMfractionsNOMDOC%SUVAL·(m·mg)-1HOA49.60 200~16002.51HON46.16 200~9001.60HOB0.38 200~9000.85HIA2.46 200~10001.88HIN1.16 200~9000.83HIB0.24 200~8002.02 SUVA[10].HOAHIBSUVA2.512.02L·(m·mg)-1,;HOBHIN,0.850.83L·(m·mg)-1.NOM200~1000(HOA).Vilge-Ritter[11],NOM.,,.2.2 DOCSUVA2NOMFeOOH、FeOOHDOCSUVA.,1.7mgmg,HOBNOM,.5NOMDOC.FeOOHDOC,HON、HIA、HIB3NOMDOC.,DOC,,.,HIAHON,FeOOHNOMDOC.NOMDOC.DOC,FeOOH.,FeOOHHIA、HONHIB3NOM,DOC.,,、NOM,,.,“”.,,O—C[12],[13],.,DOC.SUVA,.,NOMSUVA(HOBHIN),NOM,.SUVA1.81%~26.47%.FeOOH·OH“”.2.3 、GCMS(EI)NOM7673:FeOOHNOM:、、、、、、、、.,、、、(1μgL),,NOM、、、5、(1),NOM、DOC.2 NOM、FeOOHDOCSUVATable2 DOCandSUVAoftheNOMfractionsaftercatalyticozonation,ozonationandFeOOHadsorptionNOMDOCmg·L-1SUVAL·(m·mg)-1FeOOHO3O3FeOOHFeOOHO3O3FeOOHHOA3.062.782.902.952.451.201.262.43HON3.292.753.252.971.460.500.681.51HOB2.451.982.022.450.920.860.890.92HIA3.182.393.172.731.820.780.831.92HIN2.622.532.612.540.570.540.550.57HIB2.902.012.712.752.101.401.682.071 NOMDOC、Fig.1 YieldsofaldehydesandketonesformedfromindividualNOMfractionsaftercatalyticozonationandozonationalone ,NOM、,,HON、70%(1).S'wietlik[7]NOM,;Glaze[14],NOM,10.,HOAHON,NOM,.,6NOM,,HOB,53.1%.,HON、.HOBHIB2NOM、(1).NOM、,.HONO3[15],、;HOA、,,、[2];HOBHIB、[15],、.FeOOH,HOAHON、,HOB、.、,、NOM,·OH,[16].[17]O3DOC,,,.,(,·OH),、,、.2.4 、,3,、、..NOM3768 302.2 NOMDOCFig.2 YieldsofketoacidsformedfromindividualNOMf
本文标题:FeOOH催化臭氧氧化滤后水中NOM的小分子副产物的生成鲁金凤
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