目录UV-TiO2催化法和uv-Fenton氧化法对PFBKS降解的研究...........................31.概述......................................................................12.处理方法...............................................................13.研究内容...............................................................24.研究方法及技术路线.....................................................34.1实验仪器设备和材料...................................................34.2实验设计.............................................................34.3TiO2光催化氧化法降解有机氟废水的研究.................................34.4UV/Fenton氧化法降解有机氟废水的研究.................................45.实验装置...............................................................46.实验方法...............................................................47.测定及分析方法........................................................57.1溶液中无机氟离子的测定...............................................57.2全氟样品脱氟率计算...................................................57.3反应后溶液COD值的测定:.............................................58.数据处理与分析.........................................................58.1TiO2催化法对PFBSK降解的影响..........................................58.1.1光源距离对PFBKS降解率的影响...........................................68.1.2pH对PFBKS降解率的影响.................................................78.1.3离子强度对FPBKS降解率的影响...........................................78.1.4温度对PFBKS降解率的影响...............................................88.1.5TiO2投加量对PFBKS降解率的影响.........................................8总结:...................................................................98.2TiO2催化法对PFBKS降解的研究..........................................98.2.1温度对COD去除率的影响................................................108.2.2光源距离对COD去除率的影响............................................118.2.3离子强度对COD去除率的影响............................................118.2.4pH对COD去除率的影响..................................................128.2.5TiO2投加量对COD去除率效果的影响......................................12总结:..................................................................138.3.1pH对PFBKS降解率的影响................................................148.3.2温度对PFBKS降解率的影响..............................................158.3.3光源距离对PFBKS降解率的影响..........................................158.3.4离子强度对PFBKS降解率的影响..........................................168.3.52+投加量对PFBKs降解率的影响...........................................168.3.62+与H2O2浓度比对PFBKS降解率的影响.....................................178.4不同条件下UV-Fenton法对COD去除率的影响。..............................188.4.1光源距离对COD去除率的影响............................................198.4.2pH对COD去除率的影响..................................................198.4.3离子强度对COD去除率的影响............................................208.4.4温度对COD去除率的影响................................................208.4.52+投加量对COD去除率的影响.............................................218.4.62+与H2O2浓度比对COD去除率的影响.......................................219.讨论..................................................................2210.前景展望.............................................................2211.附表.................................................................2311.1UV-TiO2催化法方差分析..................................................23光源距离对降解率的影响方差比较.............................................23温度对降解率的影响方差比较.................................................2311.2UV-Fenton氧化法方差分析................................................2610.鸣谢.................................................................2911.参考文献.............................................................29UV-TiO2催化法和uv-Fenton氧化法对PFBKS降解的研究摘要:当今,由于全氟化合物(pfos)独特的拒水拒油性,使其被广泛应用于纺织、皮革、造纸等行业。与此同时,PFOS具有很高的生物蓄积性和多种毒性,是目前最难降解的持久性污染物,其造成的污染已逐渐成为全球性的环境问题。随着国际组织对PFOS等物质禁令的颁布,其分析技术和降解方法也得到日益广泛的关注和重视。本文将对UV-TiO2催化法和uv-Fenton氧化法对PFOSK降解效果进行详细分析和探讨,从而选择最佳的处理方式。关键词:PFBKS;降解;UV-TiO2催化法;uv-Fenton氧化法;CODStudyonthedegradationofPFBKSbyUV-TiO2catalyticmethodanduv-FentonoxidationmethodAbstract:Nowadays,duetotheuniquewaterrepellentandoilrepellentpropertyofthefluorinecompound(PFOS),itiswidelyusedintextile,leather,paperandotherindustries..Atthesametime,PFOShashighbiologicalaccumulationandmanytoxicity,isthemostdifficulttodegradethepersistentpollutant,anditspollutionhasgraduallybecomeaglobalenvironmentalproblem.WiththepromulgationoftheinternationalorganizationforthesubstanceinjunctionsuchasPFOS,thetechnologyanddegradationofitsanalysishavebeenpaidmoreandmoreattention..Inthispaper,UV-TiO2catalyticmethodandUV-FentonoxidationmethodforPFOSKdegradationoftheeffectofadetailedanalysisanddiscussion,soastochoosethebestwayoftreatment.Keyords:PFBKS;degradation;UV-TiO2catalyticmethod;UV-Fentonoxidation;CODUV-TiO2催化法和uv-Fenton氧化法对PFBKS降解的研究11.概述全氟辛烷磺酰基化合物(PFOS)及其相关化学品是一类重要的全氟表面活性剂,由于氟的特殊结构和性能,被广泛用于纺织、皮革、涂料、农药等工业生产中。近年来,随着人们对其的研究越来越深入,根据经合组织(OECD)2002年编写的危害评估[1]得出结论:全氟辛烷磺酰基化合物(PFOS)是一类新型的环境持久性污染物:由于氟具有最大的电负性,使得碳-氟键具有强极性,并且是自然界中键能最大的共价键之一,这使得全氟化合物普遍具有很高的化学稳定性和生物惰性,能够经受强的加热、光照、化学作用、微生物作用和高等脊锥动物的代谢作用而很难降解,而有机物的惰性与环境影响是相互矛盾的,越是惰性的物质在环境中越具有积累性和持久性,对环境的影响就愈大,研究报道许多氟代化合物对人体健康极为有害,主要表现为抑制酶活性,影响能量传递,破坏细胞膜等,从而诱发癌变、肝肿大等疾病。有文献估计,PFOS的环境半衰期大于41年,具有高度的生物蓄积性和放大效应。早在2