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A Hybrid Life-cycle Assessment of CO 2 Emissions of a PV Water Pumping System in China

Energy Procedia 2014年 61卷 2871-2875页

作者： Jin Yang Alexander Olsson Jinyue Yan Bin Chen School of Chemical Engineering and Technology Royal Institute of Technology Teknikringen 42 SE-100 44 Stockholm Sweden State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing 100875 China School of Sustainable Development of Society and Technology Mälardalen University SE-721 23 Västerås Sweden

To achieve both water conservation and climate change mitigation benefits, photovoltaic water pumping (PVWP) system, which employs solar energy to fuel the water pumping system, has been a widely adopted solar energy technology in the last two decades. Although the PVWP system is driven by direct renewable flux, and has no onsite CO2 emissions, there must be energy consumed during the production of PV modules and the operation of water pumping system. Thus, we estimated the CO2 emissions of a PVWP system in Inner Mongolia, China in a life cycle perspective. A hybrid Life Cycle Analysis (LCA), which combines process-sum and economic input-out analysis was employed to reduce uncertainty. Results show that PVWP is a good choice for carbon emission reduction with carbon sequestration benefit much higher than the lifetime carbon emissions. The largest emitters are PV module and engineering, which should be the focus of carbon management of PVWP system.

关键词： PV water pumping system Hybrid life cycle analysis Carbon emission Grassland

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Development of a novel conductance-based technology for environmental bacterial sensing

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Chinese Science Bulletin 2013年第4期58卷 440-448页

作者： SHEN FangXia TAN MiaoMiao XU Hong XU ZhenCheng YAO MaoSheng State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and Engineering Peking University College of Mechanical and Electrical Engineering Beijing Union University Department of Reproductive Health Guangdong Women and Children Hospital South China Institute of Environmental Science Ministry of Environmental Protection

In this study, a simple impedance based technology for measuring bacterial concentrations was developed. The measurement system includes the signal amplification, copper probes and a sample loader. During the experiments, the conductance of Bacillus subtilis var niger, Pseudomonas fluorescens, and Escherichia coli were measured using the combination of a pre-amplifier and a lock-in amplifier. The conductance data were modeled verses the bacterial concentrations. Results indicated that the relationship between the conductance of bacterial suspensions and their concentrations follows a generic model: Y=C1+C2×e ( X/C3 ) , where Y is the conductance (S), X is the bacterial concentration (Number/mL: abbreviated to N/mL) for all species tested, and C1 3 are constants. Gram negative P. fluorescens and E. coli assumed similar conductance curves, which were flatter than that of gram positive B. subtilis var niger. For P. fluorescens and E. coli the culturing technique resulted in higher concentration levels (statistically significant) from 2 to 4 times that measured by the impedance based technology. For B. subtilis var niger, both methods resulted in similar concentration levels. These differences might be due to membrane types, initial culturability and the obtained conductance curves. The impedance based technology here was shown to obtain the bacterial concentration instantly, holding broad promise in realtime monitoring biological agents.

关键词：技术开发细菌检测电导数基础 Bacillus 细菌浓度阻抗测量环境

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Preface

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Catalysis Today 2015年 258卷 1-1页

作者： Li, Junhua Eguchi, Koichi Johansen, Keld Li, Yongdan Tsinghua University State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Beijing China Department of Energy and Hydrocarbon Chemistry Kyoto University Katsura Campus 410 Integrated Research Bldg. A2 Japan Environmental Department RandD Haldor Topsoe A/S Haldor Topsøes Alle 1 DK-2800 Lyngby Denmark School of Chemical Engineering Tianjin University Tianjin China

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A Non-Linear Dynamical–Statistical Model for Reconstruction of the Air–Sea Element Fields in the Tropical Pacific Ocean

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Atmosphere 2014年第3期52卷 256-270页

作者： Mei Hong Ren Zhang Chen Chen Ma Dong Wang Chengzu Bai Jingzhong Min Yide Chenpages 256-270View full textDownload full textAccess optionsDOI:10.1080/07055900.2014.908765Published online: 09 May 2014Citing articles: 0Article Views: 11Article usage statistics combine cumulative total PDF downloads full-text HTML views from publication date (but no earlier than 25 Jun 2011 launch date of this website) to 28 Jul 2014. Article views are only counted from this site. Although these data are updated every 24 hours there may be a 48-hour delay before the most recent numbers are available.Article usage statistics combine cumulative total PDF downloads full-text HTML views from publication date (but no earlier than 25 Jun 2011 launch date of this website) to 28 Jul 2014. Article views are only counted from this site. Although these data are updated every 24 hours there may be a 48-hour delay before the most recent numbers are available.Further InformationAbstractReferencesRelated articles [a] Research Center of Ocean Environment Numerical Simulation Institute of Meteorology and Oceanography PLA University of Science and Technology Nanjing China[b] Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou China[c] Key Laboratory of Surficial Geochemistry Ministry of Education Department of Hydrosciences School of Earth Sciences and Engineering State Key Laboratory of Pollution Control and Resource Reuse Nanjing University Nanjing China[d] Nanjing University of Information Technology Nanjing China

ABSTRACTABSTRACTAiming at tackling the difficulty in establishing a sea surface temperature (SST) dynamical model, this study develops a non-linear dynamical–statistical model of SST fields and their correlative factors based on Genetic Algorithms (GA) and the dynamical system reconstruction idea, which greatly improves the El Niño–Southern Oscillation (ENSO) forecast model. Using Hadley SST data, sea surface wind (SSW) and sea level pressure (SLP) data from the National Centers for environmental Prediction-National Center for environmental Research (NCEP-NCAR), with empirical orthogonal function (EOF) time-space for reconstruction, we carry out numerical integral forecasting experiments for SST, SSW, and SLP fields. By statistical analysis of the forecasting experiments, we find that forecasts for less than 25 months perform better than longer term forecasts. Based on the model, we forecast SST, SSW, and SLP fields in September, October, and November 2014 and predict a weak La Niña event. This study explores a novel method for the complex atmosphere–ocean system.Résumé[Traduit par la rédaction] Dans le but de s'attaquer à la difficulté d’établir un modèle dynamique de la température de la surface de la mer (TSM), la présente étude met au point un modèle dynamique–statistique non linéaire des champs de TSM et de leurs facteurs corrélatifs basé sur des algorithmes génétiques et sur le principe de la reconstruction de système dynamique, qui améliore grandement le modèle de prévision de l'El Niño–Oscillation australe (ENSO). À partir des données de TSM du Centre Hadley ainsi que des données de vent à la surface de la mer (VSM) et de pression au niveau de la mer (PNM) du NCEP-NCAR (National Centers for environmental Prediction-National Center for environmental Research), avec un espace-temps de fonction orthogonale empirique pour la reconstruction, nous exécutons des expériences de prévision numériques intégrales pour les champs de TSM, de VSM et de PNM. Par l'analyse s

关键词： air-sea element field ENSO dynamical–statistical model Genetic Algorithm (GA)

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One-pot preparation of graphene oxide magnetic nanocomposites for the removal of tetrabromobisphenol A

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Frontiers of environmental Science & Engineering 2013年第3期7卷 442-450页

作者： Liqin JI Xue BAI Lincheng ZHOU Hanchang SHI Wei CHEN Zulin HUA School of Environment Tsinghua University State Key Joint Laboratory of Environmental Simulation and Pollution Control Beijing 100084 China State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Institute of Biochemical Engineering & Environmental Technology Lanzhou University Lanzhou 730000 China College of Environmental Science and Engineering Hohai University Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake (Ministry of Education) Nanjing 210098 China

A simple solvothermal method was used to prepare monodisperse magnetite （Fe304） nanoparticles attached onto graphene oxide （GO） sheets as adsorbents to remove tetrabromobisphenol A （TBBPA） from an aqueous solution. These Fe304/GO （MGO） nanocomposites were characterized by transmission electron microscopy. The adsorption capacity at different initial pH, contact duration, and temperature were evaluated. The kinetics of adsorption was found to fit the pseudo-second-order model perfectly. The adsorption isotherm well fitted the Langmuir model, and the theoretical maximum of adsorption capacity calculated by the Langmuir model was 27.26 mg ·g^-1 The adsorption thermodynamics of TBBPA on the MGO nanocomposites was determined at 303K, 313K, and 323 K, respectively. The results indicated that the adsorp- tion was spontaneous and endothermic. The MGO nanocomposites were conveniently separated from the media by an extemal magnetic field within several seconds, and then regenerated in 0.2 M NaOH solution. Thus, the MGO nanocomposites are a promising candidate for TBBPA removal from wastewater.

关键词： Magnetic graphene oxide （GO） adsorption,tetrabromobisphenol A （TBBPA）

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Degradation of bisphenol A by microorganisms immobilized on polyvinyl alcohol microspheres

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Frontiers of environmental Science & Engineering 2013年第6期7卷 844-850页

作者： Xue BAI Hanchang SHI Zhengfang YE Qiujin SUN Qing WANG Zhongyou WANG State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Tsinghua Unimrsity Beijing 100084 China Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake (Ministry of Education) College of Environmental Science and Engineering Hohai University Nanjing 210098 China The Key Laboratory of Water nd Sediment Sciences (Ministry of Education) Department of Environmental Engineering Peking University Beijing 100871 China

In this study, microorganisms （named B111） were immobilized on polyvinyl alcohol microspheres prepared by the inverse suspension crosslinked method. The biodegradation of bisphenol A （BPA） and 4-hydro- xybenzaldehyde, a degradation product of BPA, by free and immobilized B lll was investigated. The BPA degradation studies were carried out at initial BPA concentrations ranging from 25 to 150 mg·L^-1. The affinity constant Ks and maximum degradation rate Rmax were 98.3 mg·L^-1 and 19.7mg·mg^-1VSS·d^-1 for free B111, as well as 87.2mg·L^-1 and 21.1mg·mg^-1VSS·d^-1 for immobilized B 111, respectively. 16S rDNA gene sequence analyses confirmed that the dominant genera were Pseudomonas and Brevundimonas for BPA biodegradation in microorganisms B 111.

关键词： bisphenol A polyvinyl alcohol immobilizedmicroorganisms 4-hydroxybenzaldehyde

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Use of pyrolyzed iron ethylenediaminetetraacetic acid modified activated carbon as air-cathode catalyst in microbial fuel cells

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ACS Applied Materials and Interfaces 2013年第16期5卷 7862-7866页

作者： Xia, Xue Zhang, Fang Zhang, Xiaoyuan Liang, Peng Huang, Xia Logan, Bruce E. State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China Department of Civil and Environmental Engineering Pennsylvania State University 231Q Sackett Building University Park PA 16802 United States

Activated carbon (AC) is a cost-effective catalyst for the oxygen reduction reaction (ORR) in air-cathode microbial fuel cells (MFCs). To enhance the catalytic activity of AC cathodes, AC powders were pyrolyzed with iron ethylenediaminetetraacetic acid (FeEDTA) at a weight ratio of FeEDTA:AC = 0.2:1. MFCs with FeEDTA modified AC cathodes and a stainless steel mesh current collector produced a maximum power density of 1580 ± 80 mW/m2, which was 10% higher than that of plain AC cathodes (1440 ± 60 mW/m 2) and comparable to Pt cathodes (1550 ± 10 mW/m2). Further increases in the ratio of FeEDTA:AC resulted in a decrease in performance. The durability of AC-based cathodes was much better than Pt-catalyzed cathodes. After 4.5 months of operation, the maximum power density of Pt cathode MFCs was 50% lower than MFCs with the AC cathodes. Pyridinic nitrogen, quaternary nitrogen and iron species likely contributed to the increased activity of FeEDTA modified AC. These results show that pyrolyzing AC with FeEDTA is a cost-effective and durable way to increase the catalytic activity of AC. © 2013 American Chemical Society.

关键词： Activated carbon

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Experimental investigation of vegetable oil wastewater treatment by a submerged membrane bioreactor

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International Agricultural Engineering Journal 2013年第1期22卷 1-6页

作者： Guo, Yahui Ma, Zhun An, XiPing Lei, Ting Gao, Xueli Li, Shu Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education Ocean University of China Qingdao 266100 China Chinese Academy of Agricultural Mechanization Sciences Beijing 100084 China Department of Environmental Science and Engineering Environment Simulation and Pollution Control State Key Joint Laboratory Beijing 100084 China

In this paper, a lab-scale submerged membrane bioreactor (MBR) was employed to investigate the treatment ability of vegetable oil wastewater. The performance of this process was evaluated by the removal efficiency of COD, BOD5, TOC, oil and ammonia nitrogen. The MBR process could effectively remove over 88.1% of COD, 97.2% of BOD5, 88.2% of TOC, 93.9% of oil and 61.7% ammonia nitrogen, with average effluent concentrations of 180, 25, 90, 30.8 and 2.9 mg L-1, respectively. It demonstrated that this system was efficient and reliable in removing pollutants. A thick layer of sludge on membrane surface was observed and analyzed by Scanning Electron Microscope (SEM), Energy Dispersive X-Ray Spectroscopy (EDS), and Fourier Transform Infrared Spectroscopy (FT-IR). Results indicated that most of the deposits were gelatinous materials and particles of spherical bacteria and membrane fouling was mainly caused by organic pollution such as extracellular polymeric substances (EPS) fractions.

关键词： Bioreactors

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Genetically Engineered Bacteria for Mercury Detection and Its Application in environmental Monitoring

Genetically Engineered Bacteria for Mercury Detection and It...

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环境安全与生态学基准/标准国际研讨会、中国毒理学会环境与生态毒理学专业委员会第三届学术研讨会、中国环境科学学会环境标准与基准专业委员会2013年学术研讨会

作者：汪用志 Dan Li Miao He Environmental simulation and pollution control(ESPC) State Key Joint Laboratory School of EnvironmentTsinghua University Environmental simulation and pollution control(ESPC)State Key Joint Laboratory School of EnvironmentTsinghua University

A mercury sensing element mer from marine Pseudomonas putida strain SP1 was used in recombinant luminescent bacteria *** using fusions of 512bp mer gene operon with prompterless luxCDABE in pUCD615plasmid,the recombinant luminescent bacteria showed highly specificity and sensitivity to *** limit of Hg was 0.33nM,and distinct luminescent could be detected in ***,Cu,Zn,Ca,Pb,,Mg,Mn,andAl did not interfere with the detection in a range of 10～*** a signal-on test,recombinant luminescent bacteria method encountered a major barrier of false negative *** introducing internal standard method in water sample monitoring,false negative rate of recombinant luminescent bacteria method would be under control,and would accelerated the practical application of recombinant luminescent bacteria method.

关键词： Genetically Engineered Bacteria for Mercury Detection and Its Application in environmental Monitoring

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Application of GIS Based Ecological Vulnerability Evaluation in environmental Impact Assessment of Master Plan of Coal Mining Area

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Procedia environmental Sciences 2013年 18卷 271-276页

作者： Xueqin Liao Wei Li Jinxiang Hou State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal UniversityBeijing 100875 China

Coal accounts for more than 70% of total energy consumption in China. Kinds of ecological problems resulting from coal mining have become increasingly serious, which directly threaten regional ecological security and people's normal production and livelihood in some areas. Ecological vulnerability is the overall performance of the ecosystem change under mining development, thus evaluation of ecological vulnerability based on GIS in Fuxin mining master plan environmental impact assessment was presented in this article. According to ecological condition of Fuxin, the ecological vulnerability index was established synthetically reflecting ecological environmental status, ecological sensitivity and landscape spatial structure, including 9 indictors. The study area was divided into 247 grids, then the EVI value of each grid was calculated by comprehensive evaluation and the results were divided into 5 levels by Zonal Statistic analysis of ArcGIS. Combining the distribution of vulnerability classification with the important ecological function area and natural reserves in the scope of planning, the research area was plotted into five types of zone, i.e., appropriate exploitation zone, optimized exploitation zone, moderate exploitation zone, restrictive exploitation zone and forbidden exploitation zone. Several adjustment suggestions were put forward to optimize the layout of Fuxin mining area and guide the ecological protection during coal exploitation.

关键词： Ecological Vulnerability Plan environmental Impact Assessment Fuxin mining area GIS Exploitation Zoning

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