催化剂CuOMgO的制备及其微波诱导氧化降解有机废水张惠灵

336Vol.33,No.6201012JournalofWuhanUniversityofScienceandTechnologyDec.2010　　:2010-06-21　　:(D200711007).　　:(1969-),,.E-mail:[e-mail]/MgO,　,,　,(,,430081):采用均匀沉淀法制备催化剂CuO/MgO,利用SEM、XRD对催化剂CuO/MgO进行表征,并将其应用于微波诱导氧化工艺中处理活性艳蓝和焦化废水。结果表明,在微波功率为900W、微波时间为8min、催化剂投加量为0.6g/L条件下处理浓度为50mg/L的活性艳蓝,其脱色率达到95%。微波诱导氧化工艺对降低焦化废水色度与COD也有较好作用。:微波诱导;催化剂制备;脱色率;焦化废水:X703　　:A　　:1674-3644(2010)06-0637-05　　,、、,[1]。、[2]。,,,。,。,CuO/MgO,SEM、XRDCuO/MgO,,。1　1.1　(1):、(Cu(NO3)2·3H2O)、(CO(NH2)2),。(2):Quanta200、WFZUV-2100、HI193727、KD23B-BA3(X)、UV-2500、Apollo9000TOCD/Max-IIIAX。1.2　,、,。,,、,,。1.3　,50mg/L50mL,,,594nm,。2　2.1　2.1.1　硝酸铜摩尔浓度对催化剂活性的影响2∶1、450℃、0.6g/L、900W、8min,,1。1,,,0.03mol/L94.1%。,,20106;,,,,,。0.03mol/L。1　Fig.1Influenceofcoppernitrateconcentrationondecolor-izationrateofreactivebriliantblue2.1.2　焙烧温度对催化剂活性的影响2∶1、0.03mol/L、0.6g/L,900W、8min,,2。2,150℃350℃,24.6,,。,,,。,,,,[3]。350℃。2　Fig.2Influenceofcalciningtemperatureondecolorizationrateofreactivebriliantblue2.2　2.2.1　催化剂的SEM分析3SEM。3,、、;,;,,。　　(a)　　　　　　(b)(c)3　SEMFig.3SEMimagesofcatalyst2.2.2　催化剂的XRD分析4MgOCuO/MgOXRD。4,,,。,,。2θ35.6°38.8°[4],,。2.3　2.3.1　微波功率对活性艳蓝脱色率的影响0.6g/L、8min,,5。5,90W270W,,270W,,。63820106,:CuO/MgO4　XRDFig.4XRDpatternsofcatalyst90W,;270W,。270W,,,,。5　Fig.5Influenceofmicrowavepowerondecolorizationrateofreactivebriliantblue2.3.2　微波时间对活性艳蓝脱色效果的影响0.6g/L、900W,-,6。6,594nm,2--1,4。6,2min,,,,10min,97.9%。,,,1000℃[5],,、,,CO2H2O。6　Fig.6Influenceofmicrowavetimeondecolorizationrateofreactivebriliantblue2.3.3　微波诱导反应动力学研究CuO/MgO,50mg/L,7。7,,:y=0.1965x+0.9075,R2=0.9949[6],0.1965min-1,3.53min。7　Fig.7Kineticsofmicrowaveinducedoxidation2.3.4　催化剂的回收利用,,,。1。1,,。,,;,。,,,。639201061　Table1Decolorizationrateofreactivebriliantblueatdif-ferentreusetimes/012345/%94.591.287.385.182.379.62.4　,500～700,TOC30～50mg/L,COD200～250mg/L,pH6～8。900W、6min,、TOCCOD,9。9,,、CODTOC,5.2g/L,、CODTOC98.1%、85%、65.8%。,[7],;,,CO2H2O,TOC。20,COD41mg/L,《》《》。9　Fig.9Influenceofcatalystdosageonremovalrateofco-kingwastewater3　(1)CuO/MgO,0.03mol/L、350℃。(2)CuO/MgO,900W、8min、0.6g/L50mg/L,95%,。(3),,COD。[1]　,,,.BF-BR[J].,2005,25(2):254-258.[2]　,,,.COD[J].,2008,31(4):70-71.[3]　,,,.-Fe2O3[J].:,2006,37(3):489-491.[4]　,,,.CuO/γ-Al2O3NO[J].,2009,15(5):430-434.[5]　BiXiao-yi,WangPeng,JiangHong,etal.Treat-mentofphenolwastewaterbymicrowave-inducedClO2-CuOx/Al2O3catalyticoxidationprocess[J].JournalofEnvironmentalSciences,2007,19(12):1510-1515.[6]　,,,.KN-R[J].,2001,21(5):627-630.[7]　,,,.CuO/γ-Al2O3[J].,2009,32(3):284-287.64020106,:CuO/MgOPreparationofcatalystCuO/MgOanditsmicrowave-inducedoxidationdegradationoforganicwastewaterZhangHuiling,MaYuan,LiuHaibo,YangXuan,FanShengnan(CollegeofResourcesandEnvironmentalEngineering,WuhanUniversityofScienceandTechnology,Wuhan430081,China)Abstract:CatalystCuO/MgO,preparedbyprecipitationmethodandcharacterizedbySEMandXRD,wasusedinmicrowave-inducedoxidationprocesstodealwithreactivebrilliantblueandcokingwastewater.Theresultsshowthat,decolorizationrateofreactivebrilliantbluereaches95%whenmicrowavepoweris900W,microwavetimeis8min,andcatalystdosageis0.6g/L.Microwave-in-ducedoxidationprocesshasagoodcapacityinreducingthechromaticityandCODcontentofcokingwastewater.Keywords:microwaveinduction;catalystpreparation;decolorization;cokingwastewater[　]641