高铁酸盐氧化降解环丙沙星的实验研究

2《》2013-04-092013-06[e-mail]。EnvironmentalScience&Technology37220142Vol.37No.2Feb.20141121111.4530072.510006K2FeO4、pH、、。pH925℃。。。X703Adoi10.3969/j.issn.1003-6504.2014.02.0241003-6504(2014)02-0123-06ExperimentalStudyonOxidationDegradationofCiprofloxacinbyFerrateLITong1LIUGuoguang12LIUHaijin1ZHUWenfei1WANGYingling11.HenanKeyLaboratoryforYellowRiverandHuaiheRiverWaterEnvironmentandPollutionControlofMinistryofEducationHenanKeyLaboratoryofEnvironmentalPollutionControlSchoolofEnvironmentHenanNormalUniversityXinxiang453007China2.FacultyofEnvironmentScienceandEngineeringGuangdongUniversityofTechnologyGuangzhou510006ChinaAbstractUsingpotassiumferrateK2FeO4asrawmaterialtheconcentrationpHtemperatureoxygencontentandotherfactorsonpotassiumferrateoxidationdegradationoftheeffectofciprofloxacinwereexaminedandciprofloxacindegradationkineticcharacteristicswasstudied.Theresultsshowthatpotassiumferratedosageiskeyfactorwhichaffectedbyciprofloxacindegradation.EffectofpotassiumferrateoxidationdegradationofciprofloxacininthebestpHvalueis9temperature25℃andthetemperatureonthedegradationeffectisnotbig.Oxygenmaybeinvolvedintheresponseandtopromotepositivereactionciprofloxacinaccelerateddegradation.Potassiumferrateoxidationdegradationofciprofloxacinintheprocesswithtwoorderreactionkineticsmodel.Keywordspotassiumferrateciprofloxacinoxidationdegradationkinetics2070、、。FeO42-Fe。2.20V、0.72V[1-2]。。、、、、“”[2-4]。[5-6]。ciprofloxacinCPFX[27]。[8]。37[9]。、、、ng/Lμg/L[10-11]。5~2000。、、。。11.1Waters1525-2998WatersBS224SKQ-50Milli-QReferenceMillipore81-2DXY-2。93%K2FeO4[12]C17H18FN3O3·HCl·H2O98%C6H15NARH3PO4ARCH3OHLCNa2SO3AR。1.21.2.1NaOH、FeNO3·39H2ONaClONaOH。KOH20℃15min。、[2]。1.2.20.03mmol/L。250mL0.03mmol/L50mL30.45μmHPLC[2]。pH。3。1.2.3C185μm4.6mm×150mm∶0.25mol/LpH3.0=25∶751mL/min20μL35℃278nm[213]。22.12.1.1“1.2”25℃30minpH95∶1、10∶1、15∶1、20∶1、25∶1、30∶1。1。130∶171.9%。115∶1。[13]pH2[14-15]。15∶1。2.1.225℃pH915∶160min2。220min30min62.3%。。30min。。2.1.3pH25℃30min15∶1pH3~11pH3。3pH9pHpH9pH=962.4%。pHpH。K2FeO42.20VFe3+。[16]K2FeO4K2FeO40.72VK2FeO4。pHpH[17]。pH9pHpH9pH。[13]。K2FeO4pH9。2.1.4pH930min15∶110、15、20、25、30、35、40℃4。425℃62.7%40℃。[18]37。2。2.1.525℃pH930min15∶13、5。5330min72.3%。。JDRush[19]FeFe、Fe、Fe。FeO42-+4H2O+3e-→4FeOH3+5OH-1[O]+H2O→2OH·22HO·→H2O232H2O2→2H2O+O244H2O2。[20]。。2.2[21]pH925℃K2FeO4c0K2FeO4mmol/Lc0CPFXmmol/Lv0mmol/L·s[2]。K2FeO4v=-d[CPFX]dt=kcCPFXmcK2FeO4n5vmmol/L·scCPFXmmol/LcK2FeO4K2FeO4mmol/Lmnkmmol1-m-n/Lm+n-1·s。K2FeO45v=-d[CPFX]dt=k'cCPFXm6k'=kcK2FeO4n7K2FeO40.45mmol/L0.012、0.020、0.028mmol/Llnc0/c-t6c0ct[2]。610lnc0/c-tm=111。1Table1Falsekineticparametersoffirst-orderreactiondynamicsequationofCPFXindifferentconcentrationsCPFX/mmol·L-1K2FeO4/mmol·L-1R20.0120.45ln(c0/c)=0.1748t+0.05890.98530.020.45ln(c0/c)=0.1504t+0.09820.97130.0280.45ln(c0/c)=0.1293t+0.10020.960425v=kcCPFXcK2FeO4n88v/cCPFX=kcK2FeO4n9lgv/cCPFX=nlgcK2FeO4+lgk100.03mmol/LK2FeO40.15、0.3、0.45、0.60、0.75mmol/Llnc0/c-t7c0ct[2]。7K2FeO4vlgv/cCPFXlgcK2FeO48。K2FeO4K2FeO4n=1。9v=kcCPFXcK2FeO41111。31pH、、、、。pH915∶130min25℃。2K2FeO4K2FeO4K2FeO4。[][1].[J].200214341-43.WeiXiaoyanLiuShen.Efficaciesandapplicationofpotas－siumferrate[J].JournalofJiaxingCollege200214341-43.inChinese[2].[D].2013.LiTong.StudyoftheEco-toxicologicalEffectofCPFXandItsChemicalDegradationinAqueousSolution[D].Xinxiang:HenanNormalUniversity2013.inChinese[3].[J].200224639-43.LuoZhiyongLiHepingZhengZegen.Preparationofpotassiumferrateanditsapplicationinwatertreatment[J].JournalofChongqingJianzhuUniversity200224639-43.inChinese[4]JiangJQLloydBGrigoreL.Preparationandevaluationofpotassiumferrateasanoxidantandcoagulantforpotablewa－tertreatment[J].EnvironmentalEngineeringScience2001185323-328.[5]JiangJQ,AlexPanagoulopoulosMikeBaueretal.Theapplicationofpotassiumferrateforsewagetreatment[J].En－vironmentalManagement2006792215-220.[6]LiCLiXZGrahamNeta1.TheaqueousdegradationofbisphenolAandsteroidestrogensbyferrate[J].WaterRe－search2008421/2109-120.[7]DoddMCShahADVonGuntenUetal.Interactionsoffluoroquinoloneantibacterialagentswithaqueouschlorinereactionkineticsmechanismsandtransformationpathways[J].EnvironSciTechnol200539187065-7076.[8].642[J].20012310632-633.GeXuechengCaoShengxi.Adverseeffectsassociatedwithciprofloxacinanalysisof642cases[J].NingxiaMedicalJournal20012310632-633.inChinese[9].[J].2009293619-625.JinCaixiaChenQiuyingLiuJunjunetal.Theeco-toxi－cologicaleffectoftwocommonveterinarydrugsoncropger－mination[J].JournalofEnvironmentalScience2009293619-625.inChinese[10]MartinsAFVasconcelosTGHenriquesDMetal.Con－centrationofciprofloxacininBrazilianhospitaleffluentand37122[13].[J].2008289791-795.WuWeiHuGengdong,JinLanxian,etal.Dynamicinflu－enceonmicroorganismsinpondwaterbodybytheplantedfloatsystem[J].ChinaEnvironmentalScience2008289791-795.inChinese[14]FranciscoAC.Nitrogenremovalandcyclinginrestoredwet－landsusedasfiltersofnutrientsforagriculturalrunoff[J].WaterScienceandTechnology1997355255-261.[15]EnvironmentalRiskAssessmentRevisedEnvironmentalAspectoftheHERAReportFebruary2013.[EB/OL].http//