催化氧化法处理对氯硝基苯(PCNB)废水的研究

以活性炭为催化剂，H2O2作氧化剂催化氧化降解对氯硝基苯(PCNB)，结果表明，在H2O2／CODcr=1．2，活性炭／H2O2=0．4，pH=3．0的条件下，反应可在180min结束，PCNB的去除率高于99％，CODcr去除率可达80％，与Fenton试剂法相比较，CODcr去除率提高1．78倍，并对降解机理作了初步讨论。     

微波辐射Fenton试剂-活性炭催化氧化体系降解水中苯酚

以1．0g苯酚溶于1000InL无酚水中作为模拟水样组成反应模型，利用微波辐射以Fenton试剂与活性炭组成的催化氧化体系来降解水中苯酚，并研究了各种因素对微波辐射该体系催化氧化降解苯酚反应的影响．研究表明，微波辐射．Fenton试剂一活性炭催化氧化体系能高效快速降解水中苯酚，较彻底地矿化水中有机物，使处理后的模拟水有机物含量达到饮用水的标准．其优化条件为：微波输出功率650w，微波辐射时间为15min，活性炭用量1．0g，Fenton试剂H2O2与FeSO4，7H2O物质量比为50：1。     

Fenton试剂法与EF-Feox法处理高浓苯酚废水的比较研究

分别用Fenton试剂法和EF-Feox法氧化处理苯酚模拟废水，研究结果显示：Fenton试剂法中，H2O2投加量为10mL／L，Fe^2＋为4mmol／L，pH为4．1，经过30min后，COD去除率达75．7％,而在EF-Feox法中，在外加电压7V，H2O2投加量为5．6mL／L，Na2SO4投加量0．7g／L，pH为3．1，经过30min后，COD去除率达83．3％．两者比较，EF-Feox法比Fenton试剂法的去除率效果提高了近8％。     

活性炭—H2O2催化氧化处理垃圾渗滤液的试验研究

处理垃圾渗滤液试验以活性炭作催化剂、H2O2作氧化剂。结果表明，在H2O2／COD0＝1．5，活性炭／H2O2＝0．6，pH值为2的条件下反应可以在180min内结束，其中COD及色度的去除率分别为82．8％和85．5％，臭味消失，比Fenton试剂法处理渗滤液效果要好，并对氧化机理进行了初步探讨。     

均相和非均相Fenton型催化剂催化氧化含酚废水

研究了均相和非均相Penton型催化剂催化氧化含酚废水．对均相催化氧化反应进行正交试验和单因数试验，确定其氧化降解特定废水的最优化条件．在Fenton反应机理的基础上，探讨了Fe^3 在均相和非均相条件下的催化氧化机理；制备了Fe^3 ／人造沸石和Fe^3 ／活性炭催化剂；进行了非均相催化氧化降解高浓度含酚废水的试验；比较了均相和非均相催化氧化反应对苯酚降解率的影响．结果发现非均相反应能大大提高苯酚降解率，使用Fe^3 ／活性炭为催化剂时可使苯酚的降解率达到93．02％．     

Fenton试剂氧化机理及难降解有机工业废水处理研究进展

系统地分析了经典Fenton试剂法、光-Fenton试剂法和电-Fenton法对有机污染物的降解机理．概述了Fenton氧化技术在处理酚类废水、焦化废水、印染废水和农药废水等难降解有机工业废水中的应用研究进展,指出Fenton氧化技术将沿着Photo-Fenton法、电-Fenton法以及和其他处理技术组合的路线向前发展．     

超声-Fenton试剂耦合降解水中苯酚的研究

采用超声-Fenton试剂耦合法降解水中的苯酚．单因素考察了反应时间、超声功率、Fenton试剂中H2O2和Fe^2＋的浓度配比、初始pH值以及反应温度对苯酚降解率的影响；采用正交实验法，得到各因素影响显著性的先后顺序为：Fenton试剂中H2O2与Fe^2＋的浓度配比、超声功率、反应时间、初始pH值；优化了降解反应的工艺条件：常压、30℃时，在超声频率为40kHz、超声功率为400W、H2O2和Fe^2＋的浓度分别为60mmol／L和1．2mmol／L、反应时间为10min、初始pH值为3的最佳条件下处理100mg／L的苯酚溶液，其降解率可达99．5％,在最佳工艺条件下对超声-Fenton降解苯酚的动力学研究发现：反应符合表观一级反应动力学，研究表明：超声-Fenton试剂耦合法明显优于二者的简单叠加，能够显著地缩短反应时间，提高苯酚的降解率。     

UV/Fenton试剂处理阴离子表面活性剂废水性能研究

采用UV/Fenton试剂降解SDBS阴离子表面活性剂废水,在初始p H为3.0,Fe2+浓度为0.033 mol·L-1,H2O2分2次投加,总投加浓度为0.89 mol·L-1时,室温下紫外辐射反应30min,SDBS降解率可达89.01%.将UV、Fenton、UV/Fenton 3种体系处理SDBS废水的效果进行比较,发现UV对Fe2+催化H2O2氧化降解有机废水存在协同作用.     

UV/O_3/Fenton氧化工艺处理垃圾渗滤液效果研究

为了降解垃圾渗滤液中各种难降解污染物,研究采用UV/O_3/Fenton高级氧化技术对这些难降解污染物进行处理,对三种组合技术进行了实验,结果表明:在pH为9,臭氧浓度为500 mg/h,UV的功率为11 W时,O_3-UV法对CODcr和氨氮最大去除率分别在60 min和90 min时达到55.70%和24.33%;在pH为4,臭氧浓度为500 mg/h,Fenton试剂按照c(H_2O_2)∶c(Fe~(2+))=4∶1的摩尔浓度配置时,O_3-Fenton法对CODcr和氨氮最大去除率分别在90 min和120 min时达到31.09%和60.58%;在pH为4,UV的功率为11 W,Fenton试剂按照c(H_2O_2)∶c(Fe~(2+))=4∶1的摩尔浓度配置时,UV-Fenton法对CODcr和氨氮最大去除率分别在120min和20min时达到58.29%和32.87%。UV-Fenton法对CODcr的去除效果最好,而O_3-Fenton法对氨氮的去除效果最好,这些技术方法能够对垃圾渗滤液中难降解污染物进行有效的处理。     

UV/Fenton法和石灰混凝法联合处理五倍子高浓度有机废水实验研究

在不同pH和温度下,采用UV/Fenton法和石灰混凝法联合处理五倍子生产单宁酸产生的高浓度有机废水.结果表明:常温下(20℃)在UV/Fenton试剂反应阶段,Fe2+和H2O2的摩尔比为1∶6,反应30min后,COD的去除率可以达到65.14％;经UV/Fenton试剂处理后的出水继续使用石灰混凝法处理,在pH=...     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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