海绵铁处理水体污染物的研究现状李守章

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ResearchstatusquooftheremovalofchemicalpollutantsfromwaterbodywithspongeironLiShouzhang,LiJunguo,WangFan,ZengYanan,YanXiaolin(CollegeofMetallurgyandEnergy,HebeiPolytechnicUniversity,Tangshan063009,China),,,,(,063009)[],。、,,,。,。[];;;[]X703.1[]B[]1005-829X(2010)12-0025-05Abstract:Asanewtypeofzero-valentiron,spongeironpossessespositivecapacitiesforremovingpollutantsfromwaterbody.Aimingattheresearchstatusquooftheremovaloforganicpollutants,heavymetalionsandinorganicsaltsfromwaterwithspongeiron,furtheranalysisonthechemo-physicalcharacteristicsofitanditspollutantre-movingefficiencyaregiven.Moreover,theadvantagesanddisadvantagesofthespongeironanditsoptimizationas-pectsduringpreparationprocessarediscussedandsummarized.Spongeironisregardedasakindofzero-valentironwhichwillsurelyplayaveryimportantroleintheprocessofwastewatertreatment.Keywords:spongeiron;reductive;pollutants;wastewatertreatment3012201012IndustrialWaterTreatmentVol.30No.12Dec.,20102080,Κ.Η.Sweeny〔1〕,,。,、、〔2-5〕。,,,,。,,,,,。、、、、,、、、〔6-10〕。1,,、(Mn,Cr,Ni,CaO,MgO),1〔11〕。,。,,,,、。,Fe2+,[]———(E2008000398)1/%/%/%/(g·cm-3)/(g·cm-3)/mm94~95895~62.3~2.71.70~1.880.5~3.0:、、。25——2010-12,30(12),Fe2+Fe3+。FeFe2+(1)(2)。E0(Fe2+/Fe)=-0.440V(1)E0(Fe3+/Fe2+)=0.771V(2)22.12.1.1、、,。,、、、〔12-15〕,,。W.A.Arnold〔16〕3:(1)。(2)Fe2+。(3),H2O,H2,H2。〔17〕(TCAA),、,TCAAKobs:,TCAAKobs3.817.17。,,TCAA,TCAA;3~5mm0.5~1mm,Kobs3.37,。M.C.Shin〔18〕,。,,,。,30%。2.1.2,,,,,。,、、〔19〕。〔20〕。,,15min90%,CODCr60%。1200mm,15min,82.86%~97.09%,CODCr,35%~42%,,B/C0.24~0.270.52~0.58,。〔21〕、,:3000,pH5~6,1.20~1.45mm,1g/L,50min,90%。2.1.3,、〔22〕。,。,〔23〕,,,,,。〔24〕,:,,10~25℃、pH4.5~7.5、0.5~1.2mm,4mg/L,40%。2.1.4COD、,COD。〔25〕,COD。5、4COD:pHCOD。5min、pH2、5g/L、COD200mg/L,COD26——2010-12,30(12)45.3%,。2.2、、、。H.S.Edward〔26〕,,,,。2.2.1,,Cr2O72-CrO42-。,100,。,,〔27〕,FeFe2+,。,,pHOH-,,。〔28〕Cr(),pHCr(),;Cr()22.88kJ/mol,Arrhenius。2.2.2、、、、、〔29-31〕,,,,。JunguoLi〔32〕,:pH,pH,pH3~7,30minCd2+80%。,Cd2+50、200mg/L,-9.896、-4.351h-1。,8hpH8.57,98%;8h,pH5.32~6.20,53.5%~76.6%,,,3.5305mg/g。,,,、,、、。2.32.3.1、,,,。,、〔33〕。,、、。〔10〕(0.5~8mm),,:,。,,25℃、pH5、110mg/L,1h,10%;pH6.48,7%。(6∶1),1。〔34〕,:pH,pH2,63.29%,pH2,,20%。。S.Choe〔35〕,:4Fe0+NO3-+10H+→4Fe2++NH4++3H2O(3)5Fe0+2NO3-+12H+→5Fe2++N2+6H2O(4)Fe0+NO3-+2H+→Fe2++NO2-+H2O(5),,,,。〔34〕,,(N)<10mg/L,;(N)10mg/L,,:27——2010-12,30(12)。,,(N)0.5mg/L,。2.3.2PO43-、HPO42-、H2PO4-,。、,。〔7〕,,:1.5mm,m()∶m()=10∶1,pH6~7。,9mg/g,89%。〔36〕,,Langmuir,。,,,,FePO4。〔37〕:2H3PO4→H4P2O7+H2O(6)H2PO4-+H2O→H3PO4+OH-(7)H2PO4-→HPO42-+H+(8)HPO42-→PO43-+H+(9)PO43-+Fe3+→FePO4(10)3,10%,。,,。,,Cr()<20mg/L,1hCr()90%〔28〕;110mg/L,1h10%〔10〕。,,、、、(pH4~6)〔10-11〕。、,。。,〔28〕,,,H+H2。,pH:pH,,;pH,Fe(OH)2Fe(OH)3()。、,,,,,,。,,。,:(1)。,,。(2)。,,,,、。KvaernerDavy,80m2/g〔38〕。S.Choe〔39〕,10nm33.5m2/g。,,,(、0.1~2m2/g)。(3)。,,,。(4)、。,,。,、,,,,。,。28——2010-12,30(12)[][1]SweenyKH.Americanwaterworksassociationresearchfoundation[C]//WaterReuseSymposium,Denver,USA,1979:1487-1488.[2],,,.COD[J].,2009,29(7):63-65.[3],.[J].,2009,22(4):61-66.[4]譈zümC,ShahwanT,ErogluAE,etal.Applicationofzero-valentironnanoparticlesfortheremovalofaqueousCo2+ionsundervari-ousexperimentalconditions[J].ChemicalEngineeringJournal,2008,144(2):213-220.[5],,,.[J].,2008,30(2):118-122.[6],,,.[C]//,:,2008:309-312.[7].[J].,2000,20(6):798-800.[8],,,.T[J].,2009,29(9):31-33.[9],,,.[J].,2009,25(8):59-62.[10],,,.[J].,2006,22(7):82-85.[11],,.[J].,2009(7):41-45.[12]RavalHD,TrivediJJ,JoshiSV,etal.FluxenhancementofthinfilmcompositeROmembranebycontrolledchlorinetreat-ment[J].Desalination,2010,250(3):945-949.[13],,,.[J].,2009,50(12):743-747.[14],,.[J].,2009,45(10):3-5.[15],,.[J].,2010,37(4):126-127.[16]ArnoldWA,RobertsAL.PathwaysandkineticsofchlorinatedethyleneandchlorinatedacetylenereactionwithFe0particles[J].EnvironmentScienceandTechnology,2000,34(9):1794-1801.[17],,,.[J].:,2010,37(3):35-40.[18]ShinMC,ChoiHD,KimDH,etal.Effectofsurfactantonre-ductivedechlorinationoftrichloroethylenebyzero-valentiron[J].Desalination,2008,223(1/2/3):299-307.[19],.[J].,2009,25(6):9-13.[20].[J].,2002,33(4):36-38.[21],,.[J].,2004,27(6):18-20.[22],,.[J].,2009,30(6):21-25.[23],,,.[J].,1997(8):17-20.[24],,,.[J].,2004,23(1):61-64.[25],,,.COD[J].,2008,24(9):57-58.[26]EdwardHS.Uptakeofheavymetalsinbatchsystemsbyarecy-clediron-bearingmaterial[J].WaterResearch,1996,30(10):2424-2434.[27].[J].,2001,7(2):78-79.[28],,.Cr()[J].,2006,32(2):41-44.[29].、[J].,2009,22(2):74-76.[30]AnirudhanTS,RadhakrishnanPG.Kineticandequilibriummodellingofcadmium()ironssorptionontopolymerizedtamarindfruitshell[J].Desalination,2009,249(3):1298-1307.[31]YzdankhahA,MoradiSE,AmirmahmoodiS,etal.Enhancedsorptionofcadmiumiononhighlyorderednanoporouscarbonbyusingdifferentsurfactantmodification[J].MicroporousandMeso-porousMaterials,2010,133(1):35-53.[32]LiJunguo,LiJun,LiYungang.Cadmiumremovalfromwastewa-terbyspongeironspherepreparedbycharcoaldirectreduction[J].JournalofEnvironmentalSciences,2009,21(51):60-64.[33],,,.[J].,2009,35(4):50-53.[34],,,.[J].,2008,31(6):14-18.[35]ChoeS,LiljestrandHM,KhimJ.Nitratereductionbyzero-va-lentironunderdifferentpHregimes[J].AppliedGeochemistry,2004,19(3):335-342.[36]

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