醋酸纤维素聚乙烯基亚胺共混微孔滤膜对Cu2的吸附

:1007-8924(2005)01-0012-05/Cu2+1,21,21,21,31,21,22(1.,116023;2.,116023;3.,116012):(CA)/(PEI),PEICu2+.pHCu2+.Cu2+Langmuir,PEI.:;;;:TQ028.8:A,,.(),.PEI,,.,,,[1,2].PEI[3-6][7-10],.CA[11],CA/PEI,PEI,,PEI,PEI(),.Cu2+,CA/PEI.11.1CA,;PEI,Sigma,Mn=60000,121;.JASCO-V550;HS30A();();Bio2RADEcono.1.2CADMF/,50%PEI,,PEI,,,,500m,5595%,,,,24h.1.31),:2003-06-25;:2003-11-25:(29776043):(1974-),,,,.251Vol.25No.120052MEMBRANESCIENCEANDTECHNOLOGYFeb.2005©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:d=2p(1)2),69kPa(520mmHg)(Millipore).3):=(W1-W2)/dH2OV100%,;W1;W2;dH2O;V.4),,,E-1010IonSputter,Toshiba.5)(CNH2).6).1.4Cu2+:CuCl22H2O,0.015g/LCu2+.Cu2+[12]:2-(5--)-5-(5-Br-PADAP),(560nm).:15mg,5mLCu2+,200r/min2h,Cu2+,Cu2+Q:Q=(c0-c)VaqW(2),c0cCu2+;Vaq;W.:513mm,Bio-RADEcono,1mL/min,015min,.22.12.1.1CA/PEI[13],CA/PEI100180m,1.PEI,,,,PEI,;,PEI,,PEI,,PEI.,.1Tab.1Membraneperformancemadeofdifferentblendratiosm(50%PE)/m(CA)m()/m(PEI)96kPa/(mLcm-2min-1)/%/m/(molg-1)/%0.075021.6163.381.1357.50.150.5018.2872.791.01179.60.230.339.2276.051.54248.11.610.300.254.7874.711.13286.41.810.380.409.8274.871.39345.42.682.1.2SEM0.151.,,.2.22.2.10.15,pH5.015,Cu2+25mg/L,2001:/Cu2+13©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(15,pH5.0)Fig.2EffectofCu2+adsorptiontimeat15,pH5.03pHCu2+(15)Fig.3EffectofpHvalueonadsorptionofCu2+at152.2.2pH0.15pH,3,pH4.0,pH;pH4.0,pH,pH5.0.,pH110,Cu2+.pH,H+,,H+Cu2+.0.1M[8],pH56.2.2.30.15Cu2+,Cu2+,4,Langmuir,R2=0.99,Qm=7.42mg/g(117mol/g),(179.6mol/g),PEI121,,PEICN=4CNH3,CNH3,mol/g;CN.Cu2+6,.,,[14]45.2.2.4PEI/CACu2+150mg/L,5,PEI(PEI=443CNH3100%).,Cu2+PEI.0.23,PEI,,,.,PEI.1425©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(a)(15,pH5.0)(b)4Cu2+Fig.4AdsorptionofCu2+iononmembrane5Cu2+(15,pH5.5)Fig.5EffectofblendratioonadsorptionofCu2+at15,pH5.56Cu2+(1mL/min,15,pH5.0)Fig.6BreakthroughcurveforCu2+ionat1mL/min(15,pH5.0)2.313mm0.15,Cu2+10mg/L,1mL/min,0.5minCu2+,6,3.39mg/g,3.68mg/g.,.2.4Cu2+150mg/L,0.1M,,Cu2+,,503,2.2,,PEI.2,31,4.1,4/PEI,2,3/PEI,,,.2Tab.2Regenerationofmembranesm()/m(PEI)/(mgg-1)0.150.507.625.525.250.230.339.558.606.230.300.2513.978.456.810.380.4014.489.569.363CAPEI,PEICu2+.Cu2+pH4.07.0,pH1.0.Cu2+Langmuir,PEI1:/Cu2+15©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[1]LiGQ,KonishiS,SaitoK,etal.HighcollectionrateofPdinhydrochloricacidmediumusingchelatingmicroporousmembrane[J].JMembrSci,1994,95:63-69.[2]TsonedaS,SatioK,FurusakiS,etal.Metalcollectionus2ingchelatinghollowfibermembrane[J].JMembrSci,1991,58:221-234.[3]SteenkampGC,KeizerK,NeomagusHWJP,etal.Cop2per()removalfrompollutedwaterwithalumina/chi2tosancompositemembrane[J].JMembrSci,2002,197:147-156.[4]BhattacharyyaD,HestekinJA,BrushaberP,etal.Novelpoly2glutamicacidfumctionalizedmicrofiltrationmem2branesforsorptionofheavymetalsathighcapacity[J].JMembrSci,1998,141:121-135.[5]El2RehimHAA,HegazyEA,AliAEH.Selectivere2movalofsomeheavymetalionsfromaqueoussolutionusingtreatedpolyethylene2g2styrene/maleicanhydridemem2branes[J].ReactFunctPolym,2000,43:105-116.[6]DenizliA,SayR,PatlrS,etal.Adsorptionofheavymetalionsontoethylenediamine2derivedandCibacronBlueF3GA2incorporatedmicroporouspoly(22hydroxyethylmethacrylate)membranes[J].ReactFunctPolym,2000,43:17-24.[7]NavarroRR,SumiK,MatsumuraM.Heavymetalseques2trationpropertiesofanewamine2typechelatingadsorbent[J].WatSciTech,1998,38:195-201.[8]SayR,TuncelA,DenizliA.AdsorptionofNi2+fromaque2oussolutionsbynovelpolyethyleneimine2attachedpoly(p2chloromethylstyrene)beads[J].JApplPolymSci,2002,83:2467-2473.[9]DuruPE,BektasS,GencO,etal.Adsorptionofheavy2metalionsonpoly(ethyleneimine)2immobilizedpoly(methylmethacrylate)microspheres[J].JApplPolymSci,2001,81:197-205.[10]ChandaM,RempelGL.Chromium()removalbypoly(ethyleneimine)granularsorbentsmadebyanewprocessoftemplatedgelfilling[J].ReactFunctPolym,1997,35:197-207.[11],,,.[J].,2003,23(3):11-15.[12],,.52Br2PADAP2CPB[J].,1989,17(12):1134-1136.[13],,,.CA/PEI[P].CN03133628.0.[14]CiardelliF,TsuchidaE,WÊhrleD.[M].,:,1999.57-58.AdsorptionofCu2+fromaqueoussolutiononcellulosediacetate/polyethyleneimineblendmicroporousmembraneCHENZhaoan1,2,DENGMaicun1,2,CHENYong1,2,HEGaohong1,3,WUMing1,2,GEJie1,2,LIJinghua2(1.TianbangNationalEngineeringResearchCenterofMembraneTechnologyCo.Ltd,Dalian116023,China;2.DalianInstituteofChemicalPhysics,ChineseAcademyofSciences,Dalian116023,China;3.DalianUniversityofTechnology,CollegeofChemicalEngineering,Dalian116012,China)Abstract:Thecellulosediacetate(CA)wasblendedwithpolyethyleneimine(PEI)toprepareanoveladsorptivemicrofiltrationmembrane,whichcanbeusedtoremoveCu2+fromaqueoussolutionwithPEIasametal2chelat2ingligand.TheeffectsofadsorptiontimeandpHvalueontheCu2+adsorptioncapacitywereinvestigated.TheisothermshowedthattheadsorptionofCu2+onthemembraneswasconsistentwithLangmuiradsorptionmodel.ThemaximumadsorptioncapacitymainlydependedonthecontentofPEIinthememb