电Fenton法处理硝基苯废水的试验研究班福忱

-Fenton班福忱,李亚峰,李慧星,贾新军,赵　娜(沈阳建筑大学市政与环境工程学院,辽宁沈阳110168):,,,H2O2Fe2+Fenton,FentonOH。-Fenton,,87%。:;-Fenton;:X703.1　:A　:0253-4320(2006)S2-0166-04TreatmentofnitrobenzenewastewaterbyE-FentontechniqueBANFu-chen,LIYa-feng,LIHui-xing,JIAXin-jun,ZHAONa(SchoolofMunicipalandEnvironmentalEngineeringShenyangJianzhuUniversity,Shengyang110168,China)Abstract:Anelectrobathwasmadeupofiron-anodeandboredgraphite-cathode,meanwhiletheairblewthecathode,thenH2O2electrolysedfromcathodeandFe2+cameintotheFentonreagent,whichoxidateorganiccompoundbyactive·OH.TheresultsprovedthatunderoptimalconditionsforE-Fentonreagentthenitrobenzenewasabletodegrederepidlywitharemovalefficiencyofover87%.Keywords:nitrobenzene;E-Fenton;removalefficiency　:2006-07-22　:(2005344)　:(1976-),,,,024-81245350,[e-mail]。　　[1-3]。FentonFe2+H2O2,H2O2Fe2+,2.8V,,CO2,。Fenton,Fe2+,Fe2+[4-10]。,,,Fenton,Fenton,,Fenton。、。1　1.1　,,,,,。1.2　,15cm×12cm×15cm,10cm×10cm,10cm×10cm;,;722,;,。1。1—;2—;3—;4—;5—;6—;7—图1　实验工艺流程图2　2.1　pHpH,:20℃,12mA/cm2,9cm·166·Oct.2006现代化工26(2)ModernChemicalIndustry200610DOI:10.16606/j.cnki.issn0253-4320.2006.s2.046,80min,150mg/L,Na2SO4()8g/L。20mL/S。pH2。1,pH,。图2　pH对硝基苯去除率的影响pHFe2+Fe3+。Fenton,Fe3+Fe2+H+。pHFe2+,,。pH,Fe2+,pH5,Fe2+Fe(OH)3,。2.2　pH3.5、,,。,。400mg/L,,58.68%。50～150mg/L;150mg/L。150mg/L,。2.3　,:pH3.5,150mg/L,,3。3,,,,H2O2,14mA/cm2,,。,,。14mA/cm2。图3　不同电流密度值对硝基苯去除率的影响　　(上接第165页),,。,,。,,,。3　(1)SO2-4/ZrO2-Al2O3-AlSO2-4/Al2O3-Al,。(2)。(3),:3,5,1mol/h。[1]《》.[M].:,1996:1268-1270.[2],.[M].:,2000.[3],,,.[J].,1997,17(9):25-27.[4].[D].:,1998.[5],,,.[J].,2004,25(10):1916-1919.[6],,,.SO2-4/ZrO2-Al2O3-Al[J].,2003,16(6):504-508.[7],,,.[J].,2000,28(6):19-22.[8].[D].:,2004.□·167·200610:-Fenton2.4　,:pH3.5,150mg/L,14mA/cm2,,4。Fenton2:120min,,50.07%,;210min,,60min28.74%,。图4　反应时间对硝基苯去除率的影响,。,CO2H2O,,,。,,·OH,·OH,。22。2.5　,:pH=3.5、150mg/L、14mA/cm2、60min,。Na2SO4,7.5g/L,,。Na2SO47.5g/L。,,120g/LNaCl。2.6　,:pH=3.5、150mg/L、14mA/cm2、60min、7.5g/L,,5。图5　极板极距对硝基苯去除率的影响5,9cm,,。,,,。,,。9cm,。2.7　H2O2,,。,pH=3.5、150mg/L、14mA/cm2、60min、7.5g/L9cm,,6。图6　曝气强度对硝基苯去除率的影响。1h30%,:,,,4OH--4e2H2O+O2。O2+2H++2eH2O2H2O2,·168·现代化工26(2)Fenton。,H2O2。。,,O2+2H++2eH2O2,H2O2,,,25mL/s,。,。Fe2+,Fe2+,Fenton,,,25mL/s,87%。3　:pH=3.5、150mg/L、14mA/cm2、60min、7.5g/L、9cm、25mL/s,87%。Fenton、,,、、,。[1]GandiniD,MaheE,MichaudPA,etal.Oxidationofcarboxylicacidsatboron-dopeddiamandelectrodesforwastewatertreatment[J].ApplElectrochem,2000,(30):1345-1350.[2]YangCH,LeeCC,WenTC.HypochloritegenertiononRu-Ptbinaryoxidefortreatmentofdyewastewater[J].ApplElectrochem,2000,(30):1043-1051.[3]ShenZ,WangW,JiaJ,etal.Catalyticallyassistedelelctrochemicaloxi-dationofdyeredB[J].WaterEnvironRes,2002(74):117-121.[4],,.[J].,2003,25(12):38-40.[5],,,.[J].,2002,28(2):26-29.[6],,,.[J].,1997,18(6):31-34.[7],,,.Fenton[J].(),2002,21(4):354-357.[8]BandaraJ,MielczarskiJA,LopezA,etal.Sensitizeddegradationofchlorophenolsonironoxidesinducedbyvisiblelightcomparisonwithti-taniumoxide[J].AppliedCatalysisB:Environmental,2001,(34):321-333.[9]VenturaA,JacquetG,BermondA,etal.Electro-chemicalgenerationoftheFentonsreagent:Applicationtoatrazinedegradation[J].WaterRe-search,2002,(36):517-522.[10],.-Fenton4-[J].,2004,5(10):56-59.□:SYJW;SYZ;SYLW;JM;SFJ;SYLS;VSH　　:021-69591888　56080777　66610615　:2GDMZ-400、2MZS-3、MZ-840、3MZ-30、2MZ-800、MZ-200　　:0577-86785928　013806878541　　:0577-86785928　　:021-54468118　54468228　　:021-54468608　:AM;JM;BM;ZM;PM;AF;;　　:021-69176247　69176344　　:021-69176344·169·200610:-Fenton