电化学方法降解活性艳红X3B高立新

WATERPURIFICATIONTECHNOLOGYVol.30,No.5,2011October25th,201120113051-6WaterPurificationTechnology、、、、、[1]。、[2]。。、、。／。。1936H.beerDSA:Ti、Zr、Ta、Nb。Co2+PbO2／Cu2+3X-BX-3B1、、、pH、。11.1X-3B200090Cu2+-Co-PbO2／-X-3B。30min25mA／cm26cm0.2mol／LCu2+0.5mol／L25mg50mg／L30min95.8%。pH。。X-3BX703.1B1009-0177201105-0001-06DegradationofReactiveBrilliantRedX-3BbyElectrochemicalTechnologicalProcessesGaoLixin,ZhangDaquan,LiZhijie(SchoolofThermalPowerandEnvironmentalEngineeringShanghaiUniversityofElectricPowerShanghai200090China)AbstractThedegradationofreactivebrilliantredX-3BsimulateddyeingwastewaterwasinvestigatedbyanelectrochemicalmethodusingCo-PbO2／stainlesssteelasananodestainlesssteelasnegativeelectrodeactivecarbon-supportedCu2+asparticleelectrode.TheexperimentresultshowedthatamaximumreactivebrilliantredX-3B(50mg／L)removalefficiencyof95.8%wasachievedafter30minofelectrochemicaltreatmentwith25mA／cm2ofcurrentdensity,6cmoftheworkingelectrodesspace,sodiumchloridesupportingelectrolytedosage0.2mol／L,activecarbon-supportedCu2+dosage25mg.ThismethodissuitableforawiderangeofpH.TheUV-VisspectrashowedthatreactivebrilliantredX-3Bwasthoroughlydegradedintosmallermolecules.KeywordsreactivebrilliantredX-3Bthree-dimensional-electrodesdegradation[]P1304[]1967-。[e-mail]。1--DOI:10.15890/j.cnki.jsjs.2011.05.006Vol.30,No.5,2011、X-3B、、CoCl2·6H2O、、、、、、。SW171501SL79HW-1CHI660CWFJ7200pH。1.22。1.31.3.10.5mm2cm×2cm320600。40%NaOH30minHCl5min。[3]。1.3.2Co-PbO2／8cm20.002A30minCo-PbO2。0.35mol／LCoCl2·6H2O、0.1mol／LHNO3、40mmol／LNaF0.5mol／LPbNO3。Co-PbO2／。1.3.31h4#110℃2h。1.3.4Cu2+AC100mLAC30℃、150r／min180minACAC110℃2h。1.4X-3BCo-PbO2／。500mLX-3B538nm。R=A0-AiA0×100%1R———A0———Ai———。、、、、、Cu2+、pH。NaO3SSO3NaHOHNClNN=NN=CN-CClC1X-3BFig.2StructuralFormulaofReactiveBrilliantRedX-3B1657342rpm2Fig.2EquipmentofExperiment1-2-3-Co-PbO2／4-5-6-7-.X-3B2--WATERPURIFICATIONTECHNOLOGYVol.30,No.5,2011October25th,20111.5X-3B0、10、15、20、25、30、40min190～900nm。。1.6Co-PbO2／Co-PbO2／0.03mol／L1hCo-PbO2／。22.12.1.1500mL28mA／cm26cm0.2mol／L25mg。3、6、9、12、15、18、30、40、50、60min10min。333min73%30min95%。·OH·OH。30min。2.1.2500mL5、10、15、20、25、30、35mA／cm230min2cm10min4。425mA／cm295.84%。。·OH·OH。。25mA／cm2。2.1.3500mL3、4、6、7、8cm。30min2cm10min5。100806040200／%0102030405060／min3Fig.3InfluenceofDecolouringRateCausedbyDifferentElectrolysisTime4Fig.4InfluenceofDecolouringRateCausedbyDifferentCurrentDensity100959085807570／%5101520253035／mA·cm-23--Vol.30,No.5,2011。、。6cm。2.1.4。。。0、0.05、0.1、0.15、0.2、0.25、0.30mol／L6。620%。。0.2mol／LNaCl95.8%。[3]。0.2mol／L。2.1.5101419253035mg。7。725mg。。·OH。H2O→·OH+H++e-24OH-→2H2O+O2+4e-35Fig.5InfluenceofDecolouringRateCausedbyDifferentPlateDistance6NaClFig.6InfluenceofDecolouringRateCausedbyDifferentNaClConcentration100806040200／%0.000.050.100.150.200.250.30NaCl／mol·L-1100806040200／%101520253035／mg7Fig.7InfluenceofDecolouringRateCausedbyDifferentActivatedCarbonAdditiveAmount100806040200345678／cm／%.X-3B4--WATERPURIFICATIONTECHNOLOGYVol.30,No.5,2011October25th,2011O2+2H++2e-→+H2O24Cu2++e-→Cu+5Cu++H2O2→Cu2++·OH+OH-6。95%。25mg。2.1.6Cu2+0.2、0.4、0.5、0.6、0.8、1.0mol／LCu2+8。8Cu2+0.5mol／L95.8%。Cu2+·OH2.1.5Cu2+CuOH2。Cu2+0.5mol／L。2.1.7pH500mL。HClNaOHpHpH2、4、6、7、8、11.5、13.5。。pH9。9pH70%。、。pH2H++2e-→H2↑H2O2。。pHpH3～8。。2.2X-3B0、10、15、20、25、30、40min190～900nm。10。1200nm400nm237、284、331nm、、X-3B513、540nm。284、331、513、540nm。。100806040200／%0.20.40.60.81.0Cu2+／mg·L-18Cu2+Fig.8InfluenceofDecolouringRateCausedbyDifferentActiratedCarbon-SupportedCu2+Amount100806040200／%pH9pHFig.9InfluenceofDecolouringRateCausedbyDifferentpHofReactiveBrilliantRedX-3BSimulateWastewater24681012145--Vol.30,No.5,20112.3Co-PbO2／Co-PbO2／0.03mol／L1h11Co-PbO2／Co-PbO2／Co-PbO2／。31Co-PbO2／--Cu2+X-3B、、、、、Cu2+pH。25mA／cm26cm0.2mol／LCu2+0.5mol／L25mg50mg／L30min95.8%。pH、pH=3～8。2284、331、513、540nm。3Co-PbO2／Co-PbO2／Co-PbO2／。1,,,.TiO2／Steel／CuX-3B[J].,2010,29(3):57-61.2,,,.[J].,2007,26(1):7-9,10.3,,,.[J].,2010,39(9):1391-1393.-60-50-40-30-20-10005011Co-PbO2／Fig.11ImpedanceComparationbetweenCo-PbO2／StainlessSteelandStainlessSteelZ′／ohmZ″／ohm100150200250Co-PbO2／.X-3B

       10Co-PbO2／Fig.10UV-VisSpectrabeforeandafterTreatmentbyCo-PbO2／StainlessSteel3.02.52.01.51.00.50.0100200300400500600700800900／nm10001∶0min2∶10min3∶15min4∶20min5∶25min6∶30min7∶40min6--