改性斜发沸石处理电镀废水中的重金属离子

1,2(1.,421008;2.,314000)[],,,Cu2+,Cr6+,Zn2+,Cd2+,Pb2+,,pH,,[];;;[]X781[]B[]1001-1560(2004)06-0037-02[]200402100Cu2+,Cr6+,Zn2+,Cd2+Pb2+,,pH,,,,pH,,,,[15]NaClNH4Cl,;,Cu2+,Cr6+,Zn2+,Cd2+Pb2+,,11.1ICPS-1000();pHS-2:Cu,Zn,Cd,Pb,Cr(1000mg/L),,NaCl,NH4NO3,H2SO4,HCl,HNO3,NaOH;1.2(1),20404160618081120:70183%SiO2,3138%CaO,11178%Al2O3,0167%Fe2O3,1106%MgO,0104%MnO,0131%TiO,2123%K2O,0145%Na2O,SiO2/Al2O3=10.14,:123.6mmoL/100g(2)20602,,NaClNH4NO3,5h,,1.31.3.13l,Cu2+,Cr6+,Zn2+,Cd2+Pb2+,,,3h,1.3.2,25,46m/h,Cu2+,Zn2+,Cd2+Pb2+Cu2+,Zn2+,Cd2+,22.1pHCu2+,Cr6+,Zn2+,Cd2+Pb2+,1.3.1,pHCu2+,Cr6+,Zn2+,Cd2+Pb2+,pH3,,2.2,pH473200463765,pH78,11/(mgL-1)335031005500600010000Cu2+Zn2+Cd2+Cr6+Pb2+/(mgg-1)10.46010.73020.05016.28044.3121,:PbCdCrZnCu,,22Cu2+Zn2+Cd2+Pb2+/(mgL-1)4505507501600/(mgg-1)25.3325.8444.37113.09/(mgL-1)4504506001500/(mgg-1)12.5615.5117.0896.342,,,,2.3,Cu2+,Zn2+,,()Cu2+,Zn2+2.4(1)1mol/LHCl,NaCl(1z1)2mol/LNH4NO3,2h,,,95%(2)25,14m/h,2mol/LNH4NO3,96%2.5500g,1mol/LHCl,NaCl(1z1)2mol/LNH4NO3,45d,3,,100m3/d:3:,,;,,CN,Zn2+,pH;,,Cr6+,pH:,,,33/(mgL-1)/(mgL-1)/%Cu2+77.82.297.2Zn2+130.23.497.3Cd2+65.11.697.5Pb2+32.52.193.54(1),Cu2+,Zn2+,Cd2+Pb2+,(2),,,,,(3),(45)83Jun.2004Vol.37No.6MaterialsProtection,[3],::Fe-2eFe2+:O2+2H2O+4e4OH-:2Fe+3/2O2+H2O2FeOOHFe2O3+H2O2.232%,2000r/min,30,40,50,70,8072h,22G-1052,G-10580,,802.3,8032%,70,300,1000,2000r/min72h,33G-1053,G-105,0.2736g/(m2h),,,,,2.480,2000r/min,()1.5%,2.5%,310%,3.5%,510%,1010%,2010%3210%72h,44,,(3%),,;3%,,1.1536g/(m2h),4G-105,3(1)EDS,Fe2O3;(2),G-105;(3%),,,,,[][1].[M].:,2001.[2].[M].:,1984.[3],,,.[J].,1997,19(3):7982.[:](38)[][1]AyazIAllahverdiev,SaidIrandoust.Isomerizationof-PineneoverClinoptilolite[J].JCatal,1999,185(2):352362.[2]AfanassyevIS,MorozNK.Protontransferinhydratedammoniumzeolites:a^1HNMRstudyofNH4-chabaziteandNH4-clinoptilo2lite[J].SolidStateIonics,2003,160(1/2):125129.[3]GeorgeRottinghaus,VeraDondur.AdsorptionofochratoxinAonoc2tadecyldimethylbenzylammoniumexchanged-clinoptilolite-heulanditetuff[J].ColloidSurfaceB,2003,30(1/2):157165.[4],,,.[J].,1999,18(4):259261.[5]EkaterinaG,Filcheva,ChristosD,etal.Influenceofclinoptiloliteandcompostonsoilproperties[J].CommunSoilSciPlan,2002,33(3/4):595607.[:]54G-10520046376derpotentialdeposition,elementaryelectronegativeprincipleandin2ducedcodepositiontheory.Rareearthalloyshavemanydesirablechemistryandmagnetismbehaviors,unusualopticalandseizingthermalneutronproperties,whichprovidethefoundationfortheirapplications.Keywords:electrodeposition;aqueoussolution;rareearthalloys;processEffectsofCI-ConcentrationandCO2PartialPressureonPit2tingBehaviorof13CrStainlessSteelunderHighTemperatureandHighPressureLVXiang-hong1,ZHAOGuo-xian2,FANZhi-hal2,YANGYan-qing1,CHENChang-feng3,LUMin-xu3(1.CollegeofMate2rialScienceandEngineering,NorthwesternPolytechnicalUniversi2ty,XiAn710072;2.TubularGoodsResearchCenterofCNPC,Xian710065;3.UniversityofScienceandTechnologyBeiJing,BeiJing100083,China).CailiaoBaohu2004,37(6),3436(Ch).Pittingbehaviorsof13CrstainlesssteelwerestudiedinthestimulatedenvironmentofTalimooilfieldbyelectrochemicalmethod.Theresultsshowthatthere-passivationabilityof13Crstainlesssteelisworse,andC1-isthemainfactorforpittinginitia2tion.UndertheconditionofhigherC1-concentrationthesuscepti2bilitytopittinginitiationincreases,andthecharacteristicsofpittinginitiationandpropagationappearonthelow-frequencypartofEIS.AstheCO2partialpressureincreases,thepittinginitiationandpropagationareaccelerated,andthenthemasstransportprocessintheinnerofpitsisretardedbecausetheanodiccurrentdensityin2creasesgreatlyresultedinincreaseofviscosity.Keywords:pitting;electrochemicalmethod;13Crsteel;CO2par2tialpressure;Cl-concentrationDisposalofWasteWaterContainingHeavyMetalIonsbyMod2ifiedClinoptiloliteLIAi-yangl,CHUHong-wei2(1.DepartmentofChemicalEngi2neering,HunanBuildingMaterialsCollege,Hengyang421008;2.DayuEnvironmentEngineeringCo.Ltd,Jiaxing314000,China).CailiaoBaohu2004,37(6),3738(Ch).Zeoliteisakindofaqueoussilicoaluminatematerialwithframestructureandnumerousconnectingholes,andpossessesexcellentpropertiessuchasionex2change,highefficientpreferentialadsorption,catalysis,acidresis2tance,andradiationresistanceetc.Theadsorptioncapabilityofnat2uralclinoptilolitecanbeimprovedbymodification.TheadsorptioneffectsofmodifiedclinoptilolitetoheavymetalionsasCu2+,Cr6+,Zn2+,Cd2+andPb2+werestudiedunderstaticstateanddynamicstatecondition.Theresultsshowthatmodifiedclinoptilolitehasbet2teradsorbabilityforheavymetalions,moreoverpHvalueofsolutionisthemainfactoraffectingadsorption.Afterthedisposalofindustri2alwastewaterbymodifiedclinoptilolite,thecontentofheavymetalionsmaydecreasetothevaluestipulatedbystatedischargestan2dard.Alsothemodifiedclinoptilolitecanbereusedbydesorption.Keywords:wastewatertreatment;eiectroplatingwastewater;mod2ifiedclinoptilolite;heavymetalionNickel-ContainingElectroplatingWastewaterTreatmentwithModifiedRectoriteLUODao-cheng,CHENAn-guo(CollegeofChemistryandChemicalEngineering,HunanUniversityofScienceandTechnolo2gy,Xiangtan411201,China).CailiaoBaohu2004,37(6),3940(Ch).N