硫酸促进型非化学计量掺杂Y纳米ZrO2聚砜复合膜的研究

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1、天津大学硕士学位论文硫酸促进型非化学计量掺杂Y纳米ZrO<,2>/聚砜复合膜的研究姓名：单力博申请学位级别：硕士专业：化学工程指导教师：张裕卿20080601ABSTRACTAgreatdealofwastewatercontainingo订isproducedf．romoilexploitationprocesses．Drainingofwastewatercontainingoilnotonlypollutestheenvironment，butalsoreducestheyieldofoil．ManyconVen

2、tionalmethodsincludinggraVi眵settIing，dewateringandincinerationpemmlcannotefEcientlytreatemuIsi6edandsolubleoil．Membranenltrationhaseme唱edasausefulprocessforconcentrationandclarincationofwastewatercontainingoil．Butla唱e—scale印plicationsofthemembraneseparationproce

3、ssforwastewatercontainingoilarelimitedbecausepolymermembranesareeasyt0becontaminatedbyoil．Therefore，developmentofantifoulingmembranesisamostpressingtaskatpresent．Inthispaper，t0enhancehydrophilicpropertyofpolysulfone(PSF)membranes，noVelo唱anic-ino略aniccompositemem

4、braneswerepreparedbyaprocessofaddingS042．／Zr02一Y203withhigheractiVityandhydrophilicpropenytotheporousmatrixofPSF．Sulf．atedY二dopednonstoichiometricnanosizedZr02(S04厶／二乙r02一Y203)wassynthesizedbydopingzr02withrareelementYttriumandmodi矽ingwithsulf．atesimultaneously．

5、Theoptimalpreparationconditionsofcompositemembraneswere：PSFconcentration，14、n．％；massratioofPEG400toPSF，10％；massratioofS044／Zr02-Y203toPSF，15％；eVaporatingtime，l0s；coagulationbathtemperature，20oC；useofultrasounds，batchoperation．MeasurementsoftensilesnIen舒h，contact

6、angleandresistancetocompactabilityshowthatmechanicaIstr．en酉h，hydrophiIicpropertyandresistancetocompactabiIityareimproVedtoala唱eextent，respectiVely．ESEMmicrographsindicatethatthecompositemembraneowningtheasymmet巧structurehastwolayersofcompactlayerandporouslayeran

7、dthatS04厶／Z内2-Y203isunifonnlydispersedinPSF．Anoil-in-wateremulsioncontainingmachineoilof80mg／Linde—ionizedwater(wastewatercontainingoil)wasusedtotesttheseparationpe—’ormancesofmembraneswithdiff．erentcastingsolutions．Theresultsindicatethatoilretentionof99．16％ando

8、ilconcentrationof0．67mg／Linpermeateareachieved，whichmeettherequirementfordischa略e(