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RETRACTED ARTICLE: Chemical oxygen demand (COD) degradation kinetics analysis of paper mill effluent treatment with ozonation and catalytic ozonation

RETRACTED ARTICLE: Chemical oxygen demand (COD) degradation ...

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作者： Lei, Li-Rong Li, You-Ming Ma, Li-Ming State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou 510640 China National Engineering Research Center of Papermaking and Pollution Control South China University of Technology No.381 Wushan Road Guangzhou 510640 China

ISBN: (纸本)9781424450893

Biological, physical and chemical methods have been extensively used to treat paper mill effluent and effectively decreased the pollution level of the effluent. But some poorly-or non-biodegradable organic compounds cannot be degraded through these traditional treatment methods. The objective of this study is to investigate the chemical oxygen demand (COD) degradation kinetics of the paper mill effluent when the effluent was treated by single ozonation and catalytic ozonation with activated carbon (AC), TiO2/AC, Al2O3and TiO2/Al2O3. Results show that CODcrdegradation process of the paper mill effluent studied in this paper with single ozonation and catalytic ozonation should follow apparent second-order kinetics, and catalytic ozonation with AC, TiO2/AC, Al2O3and TiO2/Al2O3effectively enhances the reaction rate constant of CODcrdegradation of the effluent, compared with single ozonation. The CODcrremoval rate and reaction rate constant by single ozonation are 34% and 1.21698×10-4(mg/L)-1•min-1, and CODcrremoval rates and reaction rate constants increase to 35-55% and 1.27775-2.64412×10-4(mg/L)-1•min-1by catalytic ozonation with AC, TiO2/AC, Al2O3and TiO2/Al2O3respectively. It is also found that the content of TiO2loaded on AC or Al2O3has important effect on the enhancement of CODcrremoval rate and reaction rate constant of the paper mill effluent investigated in this study in the process of ozonation and catalytic ozonation. © 2011 IEEE.

关键词： Chemical oxygen demand

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RETRACTED ARTICLE: Catalytic ozonation of paper mill effluent by activated carbon (AC), TiO2/AC, Al2O3and TiO2/Al2O3

RETRACTED ARTICLE: Catalytic ozonation of paper mill effluen...

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作者： Lei, Li-Rong Li, You-Ming Ma, Li-Ming Chen, Yuan-Cai State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou 510640 China National Engineering Research Center of Papermaking and Pollution Control South China University of Technology No.381 Wushan Road Guangzhou 510640 China

ISBN: (纸本)9781424450893

Athough traditional biological treatments effectively reduce the pollution level of paper mill effluent, biologically treated effluent usually can not meet the effluent emission standard. The objective of this study is to investigate the treatment efficiency of the biologically treated effluent by single ozonation and ozonation in the presence of activated carbon (AC), TiO2/AC, Al2O3and TiO2/Al2O3catalysts. Results showed that treatment efficiency was enhanced by the simultaneous use of ozone and the catalysts, evaluated as chemical oxygen demand (COD) and color removal rates. The COD and color removal rates reached 51% and 91% for ozonation with TiO2/AC, 55% and 92% for ozonation with TiO2/Al2O3catalyst, compared with 37% and 83% for single ozonation. It was also found that BOD5/COD effectively increased after ozonation and catalytic ozonation, indicating obvious enhancement of the biodegradability of the effluent. © 2011 IEEE.

关键词： Ozone

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Iron Isotope Compositions of Natural River and Lake Samples in the Karst Area,Guizhou Province,Southwest China

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Acta Geologica Sinica(English Edition) 2011年第3期85卷 712-722页

作者： SONG Liuting LIU Congqiang WANG Zhongliang ZHU Xiangkun TENG Yanguo WANG Jinsheng TANG Suohan LI Jin LIANG Lili College of Water Sciences Beijing Normal University Beijing 100875 China Engineering Research Center of Groundwater Pollution Control and Remediation Ministry of Education Beijing 100875 China State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

To better understand the Fe isotope characteristics of natural samples in the Karst area,the Fe isotope compositions of riverine suspended particulates,lake suspended particulates,lake sediments,porewaters,phytoplanktons,and aerosols in the watersheds of Lake Aha（a mineralized water system）and Lake Hongfeng（a mesotrophic water system）,which are located in the Karst area, southwest China,were *** studied samples displayed a variable range betweenδ^（56）Fe=-2.03‰and 0.36‰.Aerosols and phytoplanktons have similar or slightly heavier Fe isotope compositions relative to the average of igneous *** isotope compositions of riverine Suspended Particulate Matter（SPM）were mainly affected by the types of *** particulates collected from tributaries seriously contaminated with coal mine drainages displayed negativeδ^（56）Fe values（-0.89‰to-0.31‰）during summer,and there were significant increases ofδ^（56）Fe values in winter,except AR2,which was polluted with both coal mine drainage and sewage effluent. Characteristics of lakes have important influences on Fe isotope compositions of suspended particulates,lake sediments,and *** epilimnetic particulate Fe of Lake Hongfeng hadδ^（56）Fe=-0.04‰to 0.13‰,while lighter Fe isotope compositions were measured for particulate Fe from Lake Aha,ranging from-0.42‰to-0.09‰.Sediments collected from Hou Wu（HW）station of Lake Hongfeng have an averageδ^（56）Fe value of 0.09‰and their corresponding porewaters have lighter Fe isotope compositions,ranging from-0.57‰to-0.31‰;no significant variations have been observed. For the Liang Jiang Kou（LJK）station of Lake Aha,the content of reactive Fe and the concentration of sulfate were all *** to the reactive Fe recycling,including dissimilatory Fe reduction,adsorption, and Fe-sulfide formation,porewaters sampled near the sediment surface have been found to have aδ^（56）Fe value as low as-2.03‰and an increase up to 0.12‰,with a burial depth of 10 *** contrast,a

关键词： Fe isotope composition karst riverine particulate lake particulate sediment porewater

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technology Rogress of Swine Wastewater Treatment from Large-Scale Pig Farms

Technology Rogress of Swine Wastewater Treatment from Large-...

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2011 International Symposium on Water Resource and environmental Protection(ISWREP 2011)

作者： Yang Liwei Huang Tinglin Zhou Yuexi Wang Haiyan Zhang Zhaoyue PangZhaohui School of Environmental and Municipal Engineering Xi'an University of Architecture & Technology Environmental Science and Engineering College Chang'an University Research Center of Water Pollution Control Technology Chinese Research Academy of Environmental Sciences

For the large-scale swine wastewater with the characteristics of high concentration of organic matter,suspended solids and more high ammonia nitrogen,odor,complex pollution ingredient and large emissions,combined with Chinese national conditions,adapting conditions and characteristic of the three of back-to-field mode,ecological processing mode and bio-processing mode are ***,it is proposed that the development direction and main problems of the current swine wastewater treatment.

关键词： Intensive Pig Farms,Swine Wastewater,Land Spreading Mode,Ecological Treatment Mode,Biological Treatment Mode

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DETERMINATION OF SULFUR AND PHOSPHORUS IN THE POLYMER BY ION CHROMATOGRAPHY WITH OXYGEN BOMB COMBUSTION

DETERMINATION OF SULFUR AND PHOSPHORUS IN THE POLYMER BY ION...

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第十四届北京分析测试学术报告会暨展览会(BCEIA 2011)

作者： Yiting PAN Hongyu FAN Jinyuan JIANG Yuhai JIAO School of Chemical Engineering Beijing Institute of Petrochemical Technology Research Center of Water Pollution Control Technology Chinese Research Academy of Environmental Sciences

The sulfur and the phosphorus content affects the polymer’s nature and the quality directly,therefore the determination of the micro sulfur and the trace phosphorus in polymer product are extremely *** order to asses... 详细信息

关键词： DETERMINATION OF SULFUR AND PHOSPHORUS IN THE POLYMER BY ION CHROMATOGRAPHY WITH OXYGEN BOMB COMBUSTION

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Persulfate Oxidation Activated by Peroxide with and without Iron for Remediation of Soil Contaminated by Heavy Fuel Oil:Laboratory and Pilot-Scale Demonstrations

Persulfate Oxidation Activated by Peroxide with and without ...

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the Second International Conference on Frontiers of Manufacturing and Design Science(第二届制造与设计科学国际会议(ICFMD 2011))

作者： Shyang-Chyuan Fang Shang-Lien Lo Research Center for Environmental Pollution Prevention and Control Technology Graduate Institute of Environmental Engineering National Taiwan University Taipei106 Taiwan

ISBN: (纸本)9783037852828

The main objective of this study was to evaluate and optimize the chemical oxidation process to be implemented at a power plant in Penghu County,Taiwan through laboratory and pilot-scale experiments were used to evaluate and optimize the chemical oxidation process at a power plant in Penghu County,*** to pilot test,bench-scale tests were performed in the laboratory and analytical results indicated that persulfate oxidation achieved 90% removal of fuel oil while Fenton-like oxidation achieved only 41% removal of fuel oil within three days of testing *** oxidation coupled with Fenton-like reaction was then used in a pilot test to treat the contaminated soil *** Fenton-like reaction served the first stage of oxidation which formed hydroxyl radicals to break down fuel *** excess heat and ferrous ions resulted from such oxidation process would then activate persulfate oxidation which,in turn,produced sulfate radicals for continual brake-down of fuel *** of soil pilot test indicated that the concentration of fuel oil was reduced to below the regulated standard in less than a *** the treated soil was originated from the local basaltic basement rock,it is rich in heavy metals,by *** such,the heavy metals as nickel and chromium were detected in leachate collected from the treatment cells,at concentrations exceeding the Taiwan Contaminant control Standard and would have posed secondary contamination to the ambient environment if in-situ soil persulfate oxidation was ***,the result of this case study provides an alert that implementation of in-situ persulfate oxidation for soil and groundwater treatment could pose a threat of secondary contamination of heavy metals to the ambient environment.

关键词： persulfate oxidation Fenton-like reaction heavy fuel oil heavy metals secondary contamination

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Heat analysis of asphalt concrete pavement based on snow melting

Heat analysis of asphalt concrete pavement based on snow mel...

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2011 International Conference on Electric Information and control engineering, ICEICE 2011

作者： Tu, Yanping Jiang, Wen Guan, Changsheng School of Civil Engineering and Architecture Wuhan University of Technology Wuhan China School of Environmental and Civil Engineering Wuhan University of Technology Wuhan China Transportation Research Center Wuhan Institute of Technology Wuhan China Hubei Electric Power Survey and Design Institute Wuhan China

ISBN: (纸本)9781424480395

On the basis of Wuhan district weather conditions in January 5, 2010, random heat transfer mechanism of asphalt concrete pavement based on snow melting is analyzed and the model of heat transmission is established. The average temperature of tube fluid is calculated for a given heat flux based on the analysis of the heat transfer of pipes. Heat flux of different meteorological conditions is investigated, the results show that the rate of snow fall and outdoor temperature are the key factors, the wind velocity is the main factor and the air relative humidity is the minor factor. © 2011 IEEE.

关键词： Heat transfer

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Corrigendum to “Application of titanium dioxide in arsenic removal from water: A review” [J. Hazard. Mater. 215–216 (2012) 1–16]

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Journal of Hazardous Materials 2012年 221-222卷 303-303页

作者： Xiaohong Guan Juanshan Du Xiaoguang Meng Yuankui Sun Bo Sun Qinghai Hu State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University Shanghai PR China State Key Lab of Urban Water Resource and Environment Harbin Institute of Technology Harbin PR China Center for Environmental Systems Stevens Institute of Technology Hoboken NJ 07030 USA

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Structural damage identification under different noises based on Genetic algorithm

Structural damage identification under different noises base...

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2011 International Conference on Electric technology and Civil engineering, ICETCE 2011

作者： Liao, Bihai Huang, Minshui School of Civil Engineering and Mechanics Huazhong University of Science and Technology Wuhan China Hubei Key Laboratory of Control Structure Huazhong University of Science and Technology Wuhan China School of Environment and Civil Engineering Wuhan Institute of Technology Wuhan China Transportation Research Center Wuhan Institute of Technology Wuhan China

ISBN: (纸本)9781457702907

The application of GA to structural damage identification is an effective method, it is easy to implement and no special requirement concerning the initial values of unknown parameters is needed. In the paper, a nondestructive global damage identification method, an improved Genetic algorithm, is proposed to identify damage location and severity of the structure, which is verified by a number of damage scenarios for simulated beams, and shown that the proposed GA yields a suitable damage location and severity identification. In the end, the influence of noise is considered by polluting analytical mode shapes with varying amounts of noise, which shows great robustness. © 2011 IEEE.

关键词： Genetic algorithms

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Organic modification and ball milling of bentonite and its retention properties

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Gongneng Cailiao/Journal of Functional Materials 2011年第7期42卷 1238-1241页

作者： Chen, Wei Li, You-Ming Wan, Xiao-Fang State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou 510640 China National Engineering Research Center of Papermaking and Pollution Control South China University of Technology Guangzhou 510640 China

Stearyltrimethyl ammonium bromide was used for organic modification of bentonite and then ball milled the modified bentonite. The organically modified bentonite was analyzed by SEM, FT-IR and XRD. The results show that the stearyltrimethyl ammonium bromide has been interalated into the layers of bentonite. The layer distance of the bentonite is increased from 1.256 nm to 2.694 nm. The appropriate experimental conditions of interplanar spacing increasing were the dosage of STAB 40%, reaction time 4 h, temperature 75°C. The ball milled organically modified bentonite was analyzed by SEM. The results show that the particle mainly reach submicron to nanometer when ball mill 2 h. The particle size distribution range is from 100 to 500 nm. Ball milled organically modified bentonite/CPAM can improve retention rate of OCC pulp obviously than organically modified bentonite/CPAM because of smaller grains and better unigormity of ball milled bentonite.

关键词： Bentonite

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