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Adsorption of surfactants onto acrylic ester resins with different pore size distribution

Science china Chemistry 2006年第5期49卷 445-453页

作者： YANG Weiben1,2,3.LI Aimin1,3.CAI Jianguo1,3.MENG Guanhua1,3.& ZHANG Quanxing1,3.1. State Key Laboratory of Pollution control and resource reuse,School of the Environment,{3. University,{3. 210093.china 2. {3. College of Chemical technology,{3. 210048,china 3. jiangsu engineering & technology Research Center for {13. toxicant control and resource reuse,nanjing 2.003.,china State Key Laboratory of Pollution control and resource {2. School of the Environment Nanjing University Nanjing China nanjing College of Chemical technology Nanjing China jiangsu engineering & {2. Research Center for {3. toxicant control and resource reuse Nanjing China

In this study, a series of acrylic ester resins with different pore size distribution were prepared successfully by varying the type and the amount of pore-forming agents. In order to inves-tigate the adsorption behavior and mechanism of surfactants on acrylic ester resins, three kinds of surfactants were utilized as adsorbates that were sodium 6-dodecyl benzenesulfonate (6-NaDBS), sodium 1-dodecyl benzene sulfonate (1-NaDBS) and sodium 1-dodecyl sulfonate, respectively. It was observed that the surface area was available in a particular pore size and an appropriate pore size of resins appeared to be more important for the adsorption of surfactants. As compared to commercial acrylic ester resins XAD-7 and HP2.G, 50# and 3.# resins exhibited more excellent adsorption properties toward 1-NaDBS and 6-NaDBS. The experimental equilibrium data were fitted to the Langmuir, and double-Langmuir models. Two models provided very good fittings for all resins over the temperature range studied. The investigation indicated that electrostatic attraction and hydrogen bond between resins and surfactants were the main forces and had an obvious effect on adsorption proc-ess.

关键词： acrylic ester resin, surfactant, adsorption, pore size distribution, isotherm.

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RECOVERY OF p-AMINOPHENOL (PAP) FROM AQUEOUS SOLUTION BY HYPER-CROSS-LINKED RESIN AND ITS USE FOR WASTEWATER TREATMENT

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Chinese Journal of Reactive Polymers 2008年第Z1期 18-28页

作者： ZHANG Haiyun1,2 LI Aimin1,3.1. School of the Environment, and State Key Laboratory of Pollution control and resource reuse, {3. University, {3. 210093. china 2. Department of the Environmental engineering, {3. Institute of technology, {3. 211167, china 3. engineering technology Research Center of {13. Pollutants control and resource reuse of jiangsu Province, nanjing 2.003., china

p-Aminophenol （PAP）, a typical amphoteric compound, has been widely used as raw chemical material and important intermediate in various fields. To study on the recovery of PAP, an experimental comparison of the adsorption and desorption properties of PAP onto three types of hyper-cross-linked resins in aqueous solutions was performed. This paper focuses on the static equilibrium adsorption and desorption behaviors, the adsorption thermodynamics, the column dynamic adsorption and desorption, and other influencing factors of adsorption, such as temperature and pH values. All the isothermal data fit well to the Freundlich model. The capacity of equilibrium adsorption for PAP on NG-10 is the highest within the temperature range 2.8K3.8K,which may greatly contribute to the advantage in specific surface area, especially the micropore area, of the adsorbent. While in the desorption experiments, NG-9 achieved relative well regeneration efficiency whether by ethanol or by 4% hydrochloric acid. Furthermore, the results of column tests and field applications were also proved that NG-9 was an effective sorbent for the reclamation PAP from wastewater.

关键词： Adsorption p-Aminophenol Hyper-cross-linked resin Recovery.

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Efficient degradation of lube oil by a mixed bacterial consortium

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Journal of Environmental Sciences 2010年第3期22卷 381-388页

作者： Haifeng Wang, Ran Xu, Fengting Li, Junlian Qiao, Bingru Zhang State Key Laboratory of Pollution control and resource {2., College of Environmental Science and {3., Tongji University, Shanghai 2.0092. china. State Key Laboratory of Pollution control and resource {2. College of Environmental Science and Engineering Tongji University Shanghai 200092 China

A laboratory study was performed to assess the biodegradation of lube oil in bio-reactor with 3.4# stainless steel as a biofilm carrier. Among 164 oil degrading bacterial cultures isolated from oil contaminated soil samples, Commaonas acidovorans Px1, Bacillus sp. Px2. Pseudomonas sp. Px3.were selected to prepare a mixed consortium for the study based on the efficiency of lube oil utilization. The percentage of oil degraded by the mixed bacterial consortium decreased slightly from 99% to 97.2. as the concentration of lube oil was increased from 2.00 to 10,000 mg/L. The degradation of TDOC （total dissolved {2. carbon） showed a similar tendency compared with lube oil removal, which indicated that the intermediates in degradation process hardly accumulated. Selected mixed bacterial consortium showed their edge compared to activated sludge. Scanning electron microscopy （SEM） photos showed that biofilms on stainless steel were robust and with a dimensional framework constructed by EPS （extracellular polymeric substances）, which could promote the biodegradation of hydrocarbons. The increase of biofilm followed first-order kinetics with rate of 0.2.6 μg glucose/（cm2.day） in logarithm phase. With analysis of Fourier transform infrared spectroscopy （FT-IR） and gas chromatography-mass spectrometry （GC-MS） combined with removal of lube oil and TDOC, mixed bacterial consortium could degrade benzene and its derivatives, aromatic ring {2. matters with a percentage over 97%.

关键词： lube oil mixed bacterial consortium biofilm reactor stainless steel

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Release of volatile organic compounds during bio-drying of municipal solid waste

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Journal of Environmental Sciences 2010年第5期22卷 752-759页

作者： Pinjing He,Jiafu Tang,Dongqing Zhang,Yang Zeng,Liming ShaoState Key Laboratory of Pollution control and resource {2.,Key Laboratory of Yangtze River Water Environment,College of Environmental Science and {3.,Tongji University,Shanghai 2.0092.china. State Key Laboratory of Pollution control and resource {2. Key Laboratory of Yangtze River Water Environment College of Environmental Science and Engineering Tongji University Shanghai 200092 China

Three treatments were tested to investigate the release concentrations of volatile organic compounds （VOCs） during the bio-drying of municipal solid waste （MSW） by the aerobic and combined hydrolytic-aerobic *** showed that VOCs were largely released in the first 4 days of bio-drying and the dominant components were：dimethyl disulfide,dimethyl sulfide,benzene,2.butanone,limonene and methylene ***,the combined hydrolytic-aerobic process was suggested for MSW bio-drying due to fewer aeration quantities in this phase when compared with the aerobic process,and the treatment strategies should base on the key properties of these prominent *** sulfur compounds and terpenes were mainly released in the early phase of bio-drying,whereas,two peaks of release concentrations appeared for aromatics and ketones during ***,for the combined hydrolytic-aerobic processes there were also high concentrations of released aromatics in the shift from hydrolytic to aerobic *** concentrations of released chlorinateds were observed in the later *** the VOCs produced during MSW bio-drying,i.e.,malodorous sulfur compounds,terpenes and chlorinateds,their release concentrations were mainly determined by production rates;for the VOCs presented initially in MSW,such as aromatics,their transfer and transport in MSW mainly determined the release concentrations.

关键词： bio-drying municipal solid waste odors release concentration volatile organic compounds

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Chemical and Microbiological Parameters of Paddy Soil Quality as Affected by Different Nutrient and Water Regimes

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Pedosphere 2005年第3期15卷 369-378页

作者： YANGChang-Ming YANGLin-Zhang YANTing-Mei StateKeyLab.ofPollutioncontrolandresource{2. CollegeofEnvironmentalScienceandEngineeringTongjiUniversityShanghai200092（China） InstituteofSoilScience ChineseAcademyofSciencesP.O.Box821Nanjing210008（China）

A field experiment was conducted from 1999 to 2.02.to compare and evaluate the effects of nutrient and water regimes on paddy soil quality by investigating soil chemical and microbiological parameters. Four nutrient regimes, a control, chemical fertilizers only (CF), chemical fertilizers with swine manure (SM), and chemical fertilizers with wheat straw (WS), and two soil moisture regimes, continuous waterlogging (CWL) and alternate wetting and drying (AWD), were investigated. With SM and WS total organic carbon and total nitrogen in the paddy soil were significantly higher (P organic amendments was observed in the soil light fraction organic C (LFOC), water-soluble carbohydrates (WSC), and water-soluble organic C (WSOC). CWL, in particular when swine manure was incorporated into the paddy soil, markedly decreased soil redox potential (Eh) and increased total active reducing substances (ARS). Meanwhile, as compared to CF, SM and WS significantly (P organic manure was incorporated into paddy soil.

关键词： biological index of fertility nutrient regimes paddy soil quality water regimes

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OPTIMIZED DESIGN OF NATURAL ECOLOGICAL WASTEWATER TREATMENT SYSTEM BASED ON WATER ENVIRONMENT MODEL OF DYNAMIC MESH TECHNIQUE

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Journal of Hydrodynamics 2010年第1期22卷 1-8页

作者： XU Zu-xin WEI Zhong YIN Hai-long HUANG Li-hui State Key Laboratory of Pollution control and resource {2. Tongji University Shanghai 200092 China College of Environmental Science and engineering Shandong University Jinan 250100 China

A Natural Ecological Wastewater Treatment System （NEWTS） is usually built on natural terrain with necessary topography modification to improve water flowing route and pattern, and then the topography modified NEWTS should also have a reasonable water storage volume and hydraulic retention time so as to achieve the anticipated water purification effect. In this study, the dynamic mesh technique based on the finite element method and element storativity coefficients was presented to develop a two-dimensional hydrodynamic and water quality model, which was used to optimize the design of NEWTS under the dynamic land-water boundary due to various water storage volume. The models were employed in the optimized design of NEWTS from a large abandoned coal mine, which purifies the polluted water flowing into a large water storage lake, as part of the East Route South-to-North Water Transfer Project in china. Specifically, the natural topography modification scheme was presented, and further, a reasonable water storage volume and hydraulic residence time was obtained, based on the reasonable estimation of roughness coefficient and pollutant removal rate of the NEWTS with phragmites communis.

关键词： ecological wastewater treatment dynamic mesh hydrodynamic model water quality model abandoned coal mine

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Nitrogen Removal Mechanism of Fresh Leachate Treatment Using Sequencing Aged Refuse Bioreactors

Nitrogen Removal Mechanism of Fresh Leachate Treatment Using...

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2.09 International Conference on Environmental Science and Information Application technology

作者： Yingjie Sun1 Xiaojie Sun2.Huixia Wang1 Youcai Zhao3.1 Institute of Environment and Municipal engineering Qingdao Technological University Qingdao 2.603. china 2.Department of Environmental Science and engineering Tsinghua University Beijing 100084 china 3.The State Key Laboratory of Pollution control and resource reuse Tongji University Shanghai 2.0092.china

In this study,the aged refuse excavated from a 10-year old closed landfill compartment at Shanghai Laogang Refuse Landfill was used as the substrate in a sequencing aged refuse bioreactor process for treatment of fresh landfill leachate which sampled from the balance tank in the same ***,screened aged refuse with a diameter less than 8 mm was used as bio-filtration material in the two round shaped bioreactor with an inner diameter of 40 cm and a height of 13. *** fresh leachate with initial CODCr,TN and NH3.N concentrations of 11000～15000,13.0～1770 and 112.0～1650 mg/L,respectively,was introduced into the *** corresponding concentrations in the effluent were reduced to below 3.0,about 2.0,and below 15mg/L,*** sequencing aged refuse process is effective in the fresh leachate treatment,the removal efficiency of COD and TN removal is about 90% and 80% respectively,and the ammonia nitrogen transformation efficiency is about 99.5%.The treatment mechanism of nitrogen removal was *** the process,the nitrogen removal is mainly due to the simultaneous nitrification and denitrification in both *** nitrate nitrogen denitrification exists in bioreactor 1,but is not the main nitrogen removal pathway,which is different from the nitrogen removal mechanism in aged leachate treatment.

关键词： Total nitrogen Nitrogen removal mechanism Sequencing aged refuse bioreactors Aged Refuse Fresh leachate

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FIQ-C缓蚀剂在盐酸介质中的性能及机理研究

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水处理技术 2002年第1期28卷 29-31页

作者：潘碌亭肖锦同济大学污染控制与资源化研究国家重点实验室上海200092 华南理工大学造纸与环境工程学院广东广州510641

采用失重法研究了天然高分子改性缓蚀剂 FIQ- C在盐酸溶液中的长效缓蚀性能 ,解释了长效缓蚀的原因 ,探讨了长效缓蚀机理 ,通过 AES表面膜层分析及色 -质联仪定量分析。

关键词：缓蚀剂盐酸介质长效缓蚀化学吸附 FIQ-C缓蚀剂性能机理研究

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大型泵站前池非定常平面流态模拟

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同济大学学报（自然科学版） 1998年第4期26卷 401-404页

作者：赵毅山韦鹤平同济大学工程力学与技术系上海200092 同济大学污染控制与资源化研究国家重点实验室上海200092

推导了N-S方程的混合有限分析法格式及其一些性质应用交错网格法，进行数值模拟上海市合流污水治理二期工程南线A号污水泵站前池的非定食平面流场．

关键词：泵站前池非定常平面流场有限分析法污水治理

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Optical, structural and photophysical properties of new solid photocatalyst In2.aTaO7

Optical, structural and photophysical properties of new soli...

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Ⅻ International Symposium on Small Particles and Inorganic Clusters

作者： Jingfei Luan Minghui Lu Shourong Zheng Yanfeng ChenDepartment of Materials Science and engineering & National Laboratory of Solid State Microstructures nanjing University nanjing 2.0093.P.R.{3. State Key Laboratory of Pollution control and resource reuse School of Environment nanjing University nanjing 2.0093.P.R.{3.

＜正＞ Since photoinduced splitting of water on TiO2.electrode was reported, semiconductor photocatalytic process has received much attention. Especially, the scientific interests in the photocatalytic degradation of organic dyes have grown quickly in recent years because about 15% of the total world production of dyes is lost during the dyeing process and is released in

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