多通道TiO2超滤膜的制备及其在印染废水中的应用

33120111()JOURNALOFNANJINGUNIVERSITYOFTECHNOLOGY(NaturalScienceEdition)Vo.l33No.1Jan.2011do:i10.3969/.jissn.1671-7627.2011.01.009TiO2范苏,邱鸣慧,周邢,范益群(南京工业大学化学化工学院,材料化学工程国家重点实验室,江苏南京210009):2010-05-25:(973)(2009CB623400);(863)(2009AA033005);(BE2009677):(1986),,,,;(),,Emai:[e-mail].:以多通道Al2O3陶瓷微滤膜为支撑体,采用溶胶凝胶法制备完整TiO2超滤膜通过扫描电镜(SEM)表征膜的形貌,采用错流过滤方式考察膜的纯水通量截留相对分子质量及分离性能结果表明:制备的多通道TiO2超滤膜,其膜层表面完整,无裂缝针孔等缺陷且厚度均匀,纯水通量为10810-3L/(m2hPa),截留相对分子质量为9000对直接黑OB染料及退浆废水中聚乙烯醇(PVA)的截留率均达到99%以上,截留效果显著:超滤膜;陶瓷膜;印染废水;回收利用:TQ0288:A:1671-7627(2011)01-0044-04PreparationofmultichannelTiO2ultrafiltrationmembraneanditsapplicationindyeingwastewaterFANSu,QIUMinghu,iZHOUXing,FANYiqun(StateKeyLaboratoryofMaterialsOrientedChemicalEngineering,CollegeofChemistryandChemicalEngineering,NanjingUniversityofTechnology,Nanjing210009,China)Abstract:Titaniaultrafiltrationmembranewaspreparedbythesolgelmethodonthemultichannelaluminasuppor.tThemorphologyofthemembranewasanalyzedbySEM.Thepurewaterflux,molecularweightcutoff(MWCO)andseparationperformanceofthemembranewereevaluatedbycrosssectionfiltration.Theresultsshowedthatthemultichanneltitaniaultrafiltrationmembranewascrackfree.Thepurewaterfluxwas10810-3L/(m2hPa)andMWCOwas9000.TheretentionratesofmultichanneltitaniaultrafiltrationmembranefordirectblackOBandpolyvinylalcohol(PVA)couldbemorethan99%.Keywords:ultrafiltrationmembrane;ceramicmembrane;dyeingwastewater;reuse,,[1],[2],(PVA),,,[3][4],,PVA[5]TiO2,TiO2,,(PVA)111TiO2TiO2,,,5minAl2O3(200nm)(:30mm194mm500mm),36h,,4802h,TiO212TiO2(Mastersizer3000HSA,Malvern,)TiO2,11:,30nm1TiO2Fig.1ParticlesizedistributionofTiO2sol,(Quanta200,FEI,);500000(SigmaAldrich)700004000010000(AmershamPharmaciaBiotech)65g/L,(GPC,Waters,UltrahydrogelTMcolumn),,,:02MPa29315K13TiO2PVA,OB(Mw=909,),005g/LPVA(175050)(Mw=70000,),1g/LTiO22,:01MPa29315K,,[6](PerkinElmerLambda950)(1)R=(1-p/f)100%(1):R;p;f221TiO2211TiO2,TiO2087m,TiO2[7],10810-3L/(m2hPa),2,,212TiO2,,451:TiO22TiO2SEMFig.2SEMmicrographofmultichannelTiO2membrane,33:TiO290003TiO2Fig.3RetentioncurveofmultichannelTiO2membrane22TiO2221,,(45~5)106m3pH[8],,,,,(COD),,,TiO2OB,4,OB998%,,TiO255:,,67010-4L/(m2hPa);,,,,[9]20nmZrO201MPaOB,45%,10010-3L/(m2hPa),222PVAPVA46()33,,1%PVA,COD8000mg/L,,,[10],,PVA,,PVA,,100m/min,PVA,6000[11]TiO21g/LPVA,PVA66:986%,10min996%,7TiO2PVA7:,,38010-4L/(m2hPa),[12],6TiO2PVAFig.6RetentionrateofTiO2membraneforPVAatdifferenttime3TiO2,,,10810-3L/(m2hPa),9000PVA7TiO2PVAFig.7ChangeoffiltratefluxwithtimeforTiO2membraneinPVAretention,,OBPVA99%,,TiO2:[1],.PVDF[J].,1999,25(2):83-86.[2],.[J].,2003(2):146-152.[3],,.[J].,2003,23(12):15-20.[4],,,.[J].,2008,28(1):72-76.[5],,.[M].:,2003.[6],.(PVA)[J].:,2005,31(2):106-109.[7]BurrgraafAJ,CotL.Fundamentalsofinorganicmembranescienceandtechnology[M].Amsterdam:ElservierScienceBV,1996.[8],,,.[J].,2009,29(3):45-47.[9].[D]::,2007.[10],,.[J].,2008,27(1):58-60.[11]PorterJJ.Recoveryofpolyvinylalcoholandhotwaterfromthetextilewastewaterusingthermallystablemembranes[J].JournalofMembraneScience,1998,151(1):45-53.[12],,,.[J].,2003,29(1):50-52.471:TiO2