Fe富马酸盐体系对印染废水中橙黄的降解效果

28120151ＲesearchofEnvironmentalSciencesVol．28No．1Jan．2015．UVFeⅢ-ⅡJ．201528182-87．SUNJieZENGPeiZHANGHan．DecolorizationofOrangeⅡinFeⅢ-fumaratesystemunderultravioletradiationJ．ＲesearchofEnvironmentalSciences201528182-87．2014-03-102014-08-142008CDB4002010518245671976-sunjie2076@hotmail．com．UVFeⅢ-Ⅱ430074FeⅢ-FeⅢ-Ⅱc〔FeⅢ〕、ρⅡcpHⅡ．pH3～7FeⅢ-ⅡpH．c〔FeⅢ〕25μmolL、ρⅡ25mgL、c250μmolL、pH3、50minⅡ100%TOC60%．Ⅱc〔FeⅢ〕cⅡ．Ⅱ．·OHⅡ．FeⅢ-Ⅱ·OHX7031001-6929201501-0082-06ADOI10.13198j．issn．1001-6929．2015．01．11DecolorizationofOrangeⅡinFeⅢ-FumarateSystemUnderUltravioletＲadiationSUNJieZENGPeiZHANGHanInstituteofEnvironmentEngineeringandScienceSouth-CentralUniversityforNationalitiesWuhan430074ChinaAbstractPhoto-oxidationofthedyeOrangeⅡwasstudiedintheFeⅢ-fumaratesystemunderUVirradiation．TheeffectsofpHvalueandinitialconcentrationsofFeⅢfumarateandOrangeⅡwerealsoinvestigated．TheresultsshowedthatlowersolutionpHintherangeof3.0-7.0favorsthephotooxidationintheFeⅢ-fumaratesystemandtheremovalrateofOrangeⅡincreasedwithincreasinginitialconcentrationofFeⅢ．After50minutesthedecolorizationefficiencyofOrangeⅡandTOCsolutionsreached100%and60%respectivelywithpHwas3cFeⅢwas25μmolLcfumaratewas250μmolLandρOrangeⅡwas25mgL．TheeffectofinitialconcentrationsoffumaratewasnotobviousonthedecolorizationrateofOrangeⅡ．Underlaboratoryconditionsthephoto-oxidationofOrangeⅡfollowedthepseudofirstorderreaction．FluorescencemethodwastakentoconfirmedtheproductionofhydroxylradicalsintheFeⅢ-fumaratesystemunderUVradiationanditwashelpfulforthestudyofOrangeⅡdecolorizationmechanism．KeywordsFeⅢ-fumarateOrangeⅡphoto-oxidation·OHkinetics1-45-6．7-8．Fe-OH9-10、Fe-11-15、Fe-16-17．Fe-．FeⅢ-182h90%FeⅢ-CrⅥ19CrⅥ100%．Fe-·OH·OHFe-1UVFeⅢ-Ⅱ·OH720-21．、22．Ⅱc〔FeⅢ〕、ρⅡcpHⅡFeⅢ-·OHFeⅢ-ⅡFeⅢ-．11.1FeCl3·6H2O、ⅡOrangeⅡ、fumarate、coumarinAＲ．．UV1800pHs-3CMulti340iWTWGermanyFC204500W79-1L5SSPerkinElmerMultiNC3100．1.2c〔FeⅢ〕1mmolLc10mmolLρⅡ1gLHClNaDHpH．500WUV5min50min．Ⅱ484nm23FeⅢ-Ⅱ·OH．ρⅡρⅡ1ⅡE%E=1－CtC0×1001C0ρⅡCttminρⅡmgL．22.1Ⅱc〔FeⅢ〕25μmolL、c250μmolL、ρⅡ25mgLpH3Ⅱ1．1—Ⅱ+UV2—FeⅢ++Ⅱ+UV3—FeⅢ++Ⅱ4—+Ⅱ+UV5—FeⅢ+Ⅱ+UV．1ⅡFig.1ContrastexperimentsofthedecolorizationofOrangeⅡ1Ⅱ0．FeⅢ50minⅡ93%．FeⅢⅡ①FeⅢFe-OH·OH1024②5③FeⅢ·OHⅡ．Ⅱ150min76%．ⅡFeⅢ-Ⅱ．FeⅢ、FeⅢ-2．FeⅢ-FeⅢⅡ．2.2pHc〔FeⅢ〕25μmolL、c250μmolL、ρⅡ25mgL38281—2—FeⅢ3—FeⅢ-．2Fig.2UltravioletabsorptionspectraofFeⅢfumarateandFeⅢ-fumaratecomplexespH3、4、5、73．pH1—72—53—44—3．3pHⅡFig.3EffectofpHonthedecolorizationofOrangeⅡ3pH3～7pHⅡ．pH3Ⅱ50min100%．pHFeⅢⅡⅡ·OH．2.3c〔FeⅢ〕250μmolL25mgLⅡFeⅢc〔FeⅢ〕10、25、4050μmolL．4c〔FeⅢ〕Ⅱ．c〔FeⅢ〕FeⅢ5．cc〔FeⅢ〕FeⅢ·OH、H2O2．FeⅢFe-OH·OH1024Ⅱ．c〔FeⅢ〕μmolL1—502—403—304—20．4c〔FeⅢ〕ⅡFig.4EffectofFeⅢinitialconcentrationsondecolorizationofOrangeⅡc〔FeⅢ〕μmolL1—502—403—254—10．5Fig.5UltravioletabsorptionspectraofFeⅢ-fumaratesystemindifferentconcentrations2.4ρⅡcρⅡcⅡ6、7．6ρⅡ25mgLc〔FeⅢ〕25μmolLcⅡc·OH．c250μmolL30minⅡ94%．7c〔FeⅢ〕25μmolL、c250μmolLⅡρⅡ．481UVFeⅢ-Ⅱc〔FeⅢ〕25μmolL、c250μmolL、ρⅡ10mgL、pH320minⅡ97%．cμmolL1—7502—5003—2504—100．6cⅡFig.6EffectoffumarateinitialconcentrationsondecolorizationofOrangeⅡρⅡmgL1—402—303—204—10．7ρⅡⅡFig.7EffectofOrangeⅡinitialconcentrationsondecolorizationofOrangeⅡ2.5〔lnC0C=kt〕ρⅡt0～50min1．1c〔FeⅢ〕、cρⅡⅡc〔FeⅢ〕、c0.08399、0.08056min－1ρⅡ．c〔FeⅢ〕25μmolL、c250μmolL、ρⅡ10mgL0.11296min－1．1ⅡTable1KineticsfittingprocessforthedecolorizationofOrangeⅡkmin－110lnC0C=0.07156t0.07156c〔FeⅢ〕μmolL25lnC0C=0.07356t0.0735640lnC0C=0.07646t0.0764650lnC0C=0.08399t0.08399100lnC0C=0.07489t0.07489cμmolL250lnC0C=0.07941t0.07941500lnC0C=0.08650t0.08650750lnC0C=0.08056t0.0805610lnC0C=0.11296t0.11296ρⅡmgL20lnC0C=0.08942t0.0894230lnC0C=0.07709t0.0770940lnC0C=0.05058t0.050582.6·OH·OH7-·OH2325-26．c〔FeⅢ〕25μmolL、c250μmolL5mL5×10－3molLpH3．7-Ⅱ8、9．min1—02—23—44—65—86—107—12．87-Fig.8Fluorescencespectrumof7-hydroxylcoumarininthephotooxidationreaction87-FeⅢ-·OH0～12minⅡ．7-COH2O5828min1—02—53—104—155—206—307—50．9ⅡFig.9UltravioletabsorptionspectraofOrangeⅡsolutionasafunctionofirradiationtime7-27-29．Ⅱ、—NN—3．UV-Vis484nm3310nm230nm30．9484nmFeⅢ-Ⅱ．310230nm．FeⅢ-Ⅱ60minTOC59.91%60.0%．FeⅢ-ⅡCO2H2O．3aFeⅢ-Ⅱc〔FeⅢ〕cρⅡ．bpH3～7ⅡpH3．c〔FeⅢ〕25μmolL、c250μmolL、ρⅡ25mgL、pH350minⅡ100%60minTOC60%．cⅡ．c〔FeⅢ〕cρⅡ．dFeⅢ-·OHⅡ．Ｒeferences1HANKeliHEGuozhong．PhotochemistryofarylhalidesphotodissociationdynamicsJ．JournalofPhotochemistryandPhotobiologyCPhotochemistryＲeviews20078255-66．2MELLOUKIAMUYujing．OntheatmosphericdegradationofpyruvicacidinthegasphaseJ．JournalofPhotochemistryandPhotobiologyAChemistry200315723295-300．3ABＲAHAMHＲICHAＲDMGEEＲTKetal．TheUV-VISabsorptioncrosssectionsoftheα-dicarbonylcompoundspyruvicacidbiacetylandglyoxalJ．JournalofPhotochemistryandPhotobiologyAChemistry200114612319-27．4ZUOYuegang．KineticsofphotochemicalchemicalcyclingofironcoupledwithorganicsubstancesincloudandfogdropletsJ．GeochimicaetCosmochimicaActa199559153123-3130．5．UVX-3BJ．200618180-84．FENGXianghuaFUTingboDINGShiminetal．DiscolourationofreactiveredX-3BsolutioninducedbypyruvateUVsystemJ．ChemicalＲesearchandApplication200618180-84．6HUANGSWCHIANGPNLIUJCetal．Chromatereductiononhumicacidderivedfromapeatsoil-explorationoftheacti