检索结果-内蒙古大学图书馆

River Water Quality and its Relation with Air Quality: A Long-Term Case Study in a Remote and Pristine NW Italian Headwater Catchment

引用

环境核算与管理（英文） 2017年第1期5卷 35-47页

作者： Marco Casazza Franca Maraga Gengyuan Liu Massimiliano Lega Laura Turconi Sergio Ulgiati Department of Science and Technology University of Naples'Parthenope' Naples 81043 Italy National Research Council Department of Earth and Environment Research Institute for geo-hydrological protection (CNR-IRPI) Unit of Turin Italy State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Beijing Normal University Beijing 100875 China Beijing Engineering Research Center for Watershed Environmental Restoration & Integrated Ecological Regulation Beijing 100875 China Department of Science and Technology University of Naples'Parthenope' Naples 81043 Italy State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Beijing Normal University Beijing 100875 China Beijing Engineering Research Center for Watershed Environmental Restoration & Integrated Ecological Regulation Beijing 100875 China

This paper analyses the water quality characteristics of a remote and pristine basin,the Gallina small catchment,located in the Piemonte Region (NW Italy).In particular,the ion content of river water and precipitation are assessed for two distinct periods (October-December of years 1992 and 2011).These time frames are characterized by a change of air quality management rules for the study area which came into force after year ***,late Autunm months,which are considered in this study,are characterized by a peak of recorded precipitations in the area under ***,this is a period of the year where atmospheric emission intensity and distribution are greater with respect to Spring and *** chemical nature of the monitored water body was assessed through the use of Piper *** found evidence of erosional processes,which chemically altered the water compared to the quality of *** signature of air chemistry was also evident,through a shift to less sulphate,after the change of air quality regulations introduced in year *** presence of marine ions,in case of major weather perturbations,typical of the late Autumn in the monitored area,was *** fact was particularly evident for the month of November 2011,in association to a major flooding event occurred in the Piemonte *** presence of a minor ionic component,associated to rainfall waters,depending upon soil particle resuspension and transport was also ***,the prevailing origin of the measured ions was *** results show the importance of improved management actions,which should be taken in order to further reduce the trans-boundary atmospheric pollution,which constitutes a threat to water quality and a further element of indirect water pollution transfer across different areas.

关键词： Water quality Atmospheric deposition Air quality Pristine basin

来源：评论

学校读者我要写书评

暂无评论

Impact of alcohol gasoline on fuel consumption and tailpipe emissions of a China IV passenger car

Impact of alcohol gasoline on fuel consumption and tailpipe ...

引用

Chinese control Conference (CCC)

作者： Rencheng Zhu Jingnan Hu Xiaofeng Bao Liqiang He Lei Zu Yufei Li Mi Zhang College of Energy and Power Engineering Nanjing University of Aeronautics and Astronautics Nanjing Jiangsu CN State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation Chinese Research Academy of Environmental Sciences Beijing CN

ISBN: (纸本)9781509009107

Application of renewable energy is an effective way to control the excessive petroleum consumption in transportation sector. However, there is a worthy concern about the applicability of alternative fuel on in-use vehicles and the variation of exhaust emissions when switching from the traditional gasoline to a new fuel. This paper is aimed to investigate the impact of two typical kinds of alcohol gasoline, E10 and M15, on fuel consumption and tailpipe emissions of a late-model multi-port fuel injection (PFI) passenger vehicle over the worldwide harmonized light-duty test cycle (WLTC). The results showed that fuel consumption and CO 2 emissions of the test vehicle with both E10 and M15 were higher than that with gasoline. E10 reduced most of the gaseous and particulate emissions, except NOx, while M15 deteriorated the exhaust emissions seriously, especially for the THC and PN emissions those increased by approximately 3.4 and 4.6 times. The most likely reason was that M15 did not match the configuration of engine and emission control system of this test vehicle. Other studies about fuel consumption and tailpipe emissions after traditional gasoline replaced by alcohol gasoline has also revealed the deterioration when the alcohol gasoline didn't match the vehicle configuration, which would result in some negative impact on the atmospheric environment.

关键词： Petroleum vehicles Particle measurements Atmospheric measurements Engines Ethanol

来源：评论

学校读者我要写书评

暂无评论

Evaluation of Real-World emissions of China V Heavy-Duty vehicles Fuelled by Diesel, Cng and Lng on Various Road Types

SSRN

引用

SSRN 2022年

作者： Zheng, Feng Zhang, Hefeng Yin, Hang Fu, Mingliang Jiang, Han Li, Jiaqiang Ding, Yan State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation Chinese Research Academy of Environmental Sciences Beijing100012 China Vehicle Emission Control Center Chinese Research Academy of Environmental Sciences Beijing100012 China School of Mechanical and Traffic Engineering Southwest Forestry University Kunming650224 China Key Lab of Vehicle Emission and Safety on Plateau Mountain Yunnan Provincial Department of Education Kunming650224 China

Natural gas has been widely considered as an alternative fuel to diesel on heavy-duty vehicles (HDVs). To evaluate the real-world emissions, 19 diesel HDVs, 3 CNG HDVs and 9 LNG HDVs were tested using portable emission measurement system on urban, suburban and freeway roads . The results show that Average emission rates of CO, HC and NOx from diesel, CNG and LNG HDVs tend to rise with the increasing of VSP. Due to higher combustion temperature and complicated driving cycle, NOx reduction rates of real-world emission factors are lower than those of the corresponding limits from China II to China V diesel HDVs. CO and NOx emission factors from all tested HDVs on urban road are generally higher than those on suburban road in the same velocity intervals, which means driving behaviors on different road types have great influence on emission factors in the same velocity intervals. NOx emission factors from LNG HDVs are higher than those from diesel HDVs, indicating that using China V LNG HDVs instead of China V diesel HDVs could not be an ideal alternative on freeway transportation. As CO and NOx comprehensive emission factors from China V CNG HDVs are higher than those from China V diesel, even higher than China IV diesel HDVs, China V CNG HDVs are unable to be considered as cleaner vehicles when compared to China V diesel HDVs in the study. It is noticeable that HC emission factors from CNG and LNG HDVs are extremely higher compare with diesel HDVS. NO 2 emission factors from LNG HDVs are 2.14-9.19 and 4.74-8.53 times than those from diesel and CNG HDVs with various road types. Our study can provide development roadmap for different fuel types of HDVs and the reference for new emission legislation of HDVs. © 2022, The Authors. All rights reserved.

关键词： Nitrogen oxides

来源：评论

学校读者我要写书评

暂无评论

Research on Ammonia emission Characteristics Based on Regulatory Cycles from China 6 Light-Duty Gasoline vehicles

SSRN

引用

SSRN 2022年

作者： Jiang, Han Zhang, Hefeng Fu, Mingliang Wang, Yunjing Wu, Xian Yang, Xinping Ji, Jianglin Itoyama, Hiroyuki Yokoyama, Jin Yin, Hang Ding, Yan State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation Chinese Research Academy of Environmental Sciences Beijing100012 China Vehicle Emission Control Center of Ministry of Ecology and Environment Chinese Research Academy of Environmental Sciences Beijing100012 China Powertrain and EV Performance Calibration Department Powertrain and EV Engineering Division Nissan Motor Co.Ltd.

For analysis ammonia emission characteristics of light-duty gasoline vehicles (LDGVs) with the three-way catalytic converter (TWC), two China 6 LDGVs, one SULEV30 LDGV, and one hybrid electric light-duty vehicle (HEV) were evaluated using three test cycles. The average comprehensive ammonia emission factor at 23 °C was 4.5 ± 1.6 mg/km at Worldwide Harmonized Light vehicles Test Cycle (WLTC). Ammonia emissions, accounting for 91.3% ~ 98.9%, mainly concentrated in the low and medium speed sections of WLTC. The decline ambient temperatures led to the increase of ammonia emission factors, but the ammonia emissions in the extra-high-speed section of WLTC were influenced by increased load. For hot start, the emission factor at 23 °C was only 14.8% of that at cold start. Ammonia emitted from LDGVs was related to rich burn conditions and light-off temperatures of TWC catalysts. The initial temperatures of ammonia formation were about 250 °C, while shortening their spacing might effectively reduce ammonia emissions. Ammonia emission conditions of HEV corresponded to the engine working state. The large temperature difference of catalysts and unstable temperature change caused by the power source shift were the main reasons. HEV could decrease 55% ammonia emissions compared to that of LDGV at WLTC. © 2022, The Authors. All rights reserved.

关键词： Catalysts

来源：评论

学校读者我要写书评

暂无评论

Chemical Characteristics Analysis of Automobile Exhaust Particles And the Method for Evaluating its Ecological Effect

SSRN

引用

SSRN 2022年

作者： Cui, Liang Ni, Hong Lei, Kun Gao, Xiangyun Wang, Xiaonan Liu, Zhengtao State Key Laboratory of Environmental Criteria and Risk Assessment Institute of Water Ecology and Environment Chinese Research Academy of Environmental Sciences Beijing100012 China State Environment Protection Key Laboratory of Vehicle Emission Control and Simulation Chinese Research Academy of Environmental Sciences Beijing100012 China College of Water Sciences Beijing Normal University Beijing100875 China

Automobile exhaust has become the main source of atmospheric particulate matter with the increase in the number of automobiles. Automobile exhaust particles (AEPs) discharged into the atmosphere can enter the aquatic environment through atmospheric deposition, rainwater rinse, surface wash, drainage water and urban sewage and further affect aquatic organisms. However, there is no perfect theory and method to evaluate the water ecological effect of AEPs. The new European driving cycle (NEDC) and world harmonized light-duty test cycle (WLTC) were used to analyze the ecotoxicity of AEPs. The SUV gasoline, SUV hybrid and sedan gasoline under WLTC were used for further analyzed. The chemical characteristics of AEPs were analyzed, and the ecotoxicity of AEPs on aquatic organisms was studied with Vibrio fischeri and Danio rerio as test organisms. The ecological effect of AEPs was studied through species sensitivity distribution based on interspecies correlation estimation (ICE) models. The results showed that (ⅰ) polycyclic aromatic hydrocarbons (PAHs) were the main organic substances in AEPs. The total concentrations of PAHs in the NEDC and WLTC were 237.4 and 159.8 mg·kg-1, respectively, and the EC50 values for V. fischeri in the NEDC and WLTC were 42.02 and 47.05 mg·L-1, respectively. (ⅱ) The total heavy metal concentrations of SUV gasoline, SUV hybrid and sedan gasoline were 197.52, 104.86 and 89.68 mg·kg-1, respectively, and the LC50 values for D. rerio were 3.22, 4.46 and 5.62 mg·L-1, respectively. Cu and Mn were the main toxic heavy metals in AEPs. (ⅲ) The PNEC values for SUV gasoline, SUV hybrid and sedan gasoline were 0.57, 0.83 and 1.02 mg·L-1, respectively. This exploratory study can provide technical information on water ecological safety assessment for determining the impact of AEPs on the surface water environment and for further improving automobile exhaust emission standards. © 2022, The Authors. All rights reserved.

关键词： Surface waters

来源：评论

学校读者我要写书评

暂无评论

Transformation of dissolved organic matter during groundwater arsenite removal using air cathode iron electrocoagulation

引用

Chemosphere 2024年 358卷 142083页

作者： Yuan, Ying Chen, Jiabao Zhang, Hao Wu, Yue Xiao, Yu Huang, Wan Wang, Yang Tang, Jun Zhang, Fang State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing100012 China School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control Tsinghua University Beijing100084 China College of Environmental Science and Engineering Guilin University of Technology Guilin541004 China

Dissolve organic matters (DOM) usually showed negative effect on the removal of inorganic arsenic (As) in groundwater by electrochemical approaches, yet which parts of sub-component within DOM played the role was lack of evidence. Herein, we investigated the effects of land-source humic-like acid (HA) on groundwater As(III) removal using air cathode iron electrocoagulation, based on the parallel factor analysis of three-dimensional excitation–emission matrix and statistical methods. Our results showed that the land-source HA contained five kinds of components and all components presented significantly negative correlations with the removal of both As(III) and As(V). However, the high aromatic fulvic-like acid and low aromatic humic-like acid components of land-source HA presented the opposite correlations with the concentration of As(III) during the reaction. The high aromaticity fulvic-like components of land-source HA (Sigma-Aldrich HA, SAHA) produced during the reaction facilitated the oxidation of As(III) due to its high electron transfer capacities and good solubility in wide pH range, but the low aromaticity humic-like ones worked against the oxidation of As(III). Our findings offered the novel insights for the flexible activities of DOM in electron Fenton system. © 2024 Elsevier Ltd

关键词： Groundwater

来源：评论

学校读者我要写书评

暂无评论

New insights into the formation of ammonium nitrate from a physical and chemical level perspective

引用

Frontiers of environmental Science & Engineering 2023年第11期17卷 209-221页

作者： Yuting Wei Xiao Tian Junbo Huang Zaihua Wang Bo Huang Jinxing Liu Jie Gao Danni Liang Haofei Yu Yinchang Feng Guoliang Shi State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control Tianjin Key Laboratory of Urban Transport Emission ResearchCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China CMA-NKU Cooperative Laboratory for Atmospheric Environment-Health Research(CLAER) College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Institute of Resources Utilization and Rare Earth Development Guangdong Academy of SciencesGuangzhou 510650China Guangzhou Hexin Instrument Co.Ltd. Guangzhou 510530China State Key Laboratory of Precision Measuring Technology and Instruments Tianjin Key Laboratory of Air pollutants Monitoring TechnologySchool of Precision Instrument and Opto-electronics EngineeringTianjin UniversityTianjin 300072China Gigantic Technology(Tianjin)Co.Ltd. Tianjin 300384China Department of Civil Environmental and Construction EngineeringUniversity of Central FloridaOrlandoFL32816USA

High levels of fine particulate matter(PM_(2.5))is linked to poor air quality and premature deaths,so haze pollution deserves the attention of the *** abundant inorganic components in PM_(2.5),ammonium nitrate(NH_(4)NO_(3))formation includes two processes,the diffusion process(molecule of ammonia and nitric acid move from gas phase to liquid phase)and the ionization process(subsequent dissociation to form ions).In this study,we discuss the impact of meteorological factors,emission sources,and gaseous precursors on NH4NO3 formation based on thermodynamic theory,and identify the dominant factors during clean periods and haze *** show that aerosol liquid water content has a more significant effect on ammonium nitrate formation regardless of the severity of *** dust source is dominant emission source in clean periods;while a combination of coal combustion and vehicle exhaust sources is more important in haze *** the control of ammonia emission is more effective in reducing the formation of ammonium *** findings of this work inform the design of effective strategies to control particulate matter pollution.

关键词： Ammonium nitrate formation Thermodynamic theory Aerosol liquid water content Source apportionment

来源：评论

学校读者我要写书评

暂无评论

Characteristics of rural domestic sewage discharge and their driving mechanisms: evidence from the Northern Region, China

引用

Frontiers of environmental Science & Engineering 2024年第7期18卷 47-58页

作者： Jianguo Liu Ziyu Zhou Pengyu Li Zixuan Wang Ying Yan Xuezheng Yu Wenkai Li Tianlong Zheng Yingnan Cao Wenjun Wu Wenqian Cai Zhining Shi Junxin Liu Key Laboratory of Environmental Pollution Control and Remediation at Universities of Inner Mongolia Autonomous Region College of Resources and Environmental EngineeringInner Mongolia University of TechnologyHohhot 010051China State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China SCEGC No.12 Construction Engineering Group Co. Ltd.Ankang 725000China State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation Chinese Academy of Environmental PlanningBeijing 100041China Technical Centre for Soil Agriculture and Rural Ecology and EnvironmentMinistry of Ecology and EnvironmentBeijing 100012China Sustainable Infrastructure and Resource Management(SIRM) UniSA STEMUniversity of South AustraliaSouth AustraliaMawson LakesSA 5095Australia

The traits of rural domestic sewage emission are unclear,negatively affecting rural domestic sewage treatment and sewage *** study used data from the Second National Pollution Source Census Bulletin to establish a data *** spatial distribution characteristics and main factors influencing rural sewage discharge in the Northern Region were studied using spatial autocorrelation analysis and structural *** findings demonstrated that(l)a significant Spearman correlation between drainage water volume(DwV),chemical oxygen demand(COD),ammonia nitrogen(NH_(3)-N),total nitrogen(TN),and total phosphorus(TP)and that the correlation coefficients between DWV and COD,NH,-N,TNand TP were 0.87**,1.0**,0.99**,0.99**,respectively;(2)rural sewage discharge showed spatial autocorrelation,and rural domestic sewage discharge in the districts and counties with an administration was significantly higher than in the surrounding areas;and(3)social development was the main driver rural domestic sewage changes(path coefficient was 0.407**),and the main factors influencing rural domestic sewage discharge were the urbanization rate,years of education,and population age *** study obtained the spatial variation law and clarified the main influencing factors of rural domestic sewage to provide data support and a theoretical basis for subsequent rural sewage collection and *** of the Inner Mongolia Autonomous Region in northern China as a typical case,provides a theoretical foundation for scientific decision-making on rural domestic sewage treatment at the national and regional levels and offers new perspectives for managing pollutants.

关键词： Rural domestic sewage emission characteristics Spatial autocorrelation analysis Influencing factors

来源：评论

学校读者我要写书评

暂无评论

Tailpipe emissions and fuel consumption of a heavy-duty diesel vehicle using palm oil biodiesel blended fuels

引用

Science of the Total environment 2024年 955卷 177048页

作者： He, Liqiang Li, Yang Min, Yihang Yoong, Junhao Chen, Shiqing Jiao, Jiwen Li, Zhenhua Zhu, Luole Zhang, Shaojun Wu, Ye State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation Chinese Research Academy of Environmental Sciences Beijing100012 China School of Environment State Key Joint Laboratory of Environment Simulation and Pollution Control Tsinghua University Beijing100084 China Institute of Environment and Ecology Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen518055 China Malaysian Palm Oil Board Kajang43000 Malaysia Palm Oil Research and Technical Service Institute of Malaysian Palm Oil Board Shanghai201108 China Beijing Tus Deqing Bioenergy Co. Ltd Beijing100084 China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing100084 China

Biodiesel application, such as using waste cooking oil biodiesel in Shanghai, China, is a sustainable solution that addresses the challenges posed by escalating air pollution, energy security, and climate change. Future efforts may involve blending biodiesel from alternative sources like crude palm oil with diesel in China. This study tested a China V heavy-duty diesel vehicle equipped with a selective catalytic reduction (SCR) system using various palm oil biodiesel blended fuels (i.e., B0, B5, B10, and B20). The findings indicated that using biodiesel blends led to reductions in carbon monoxide (CO), hydrocarbon (HC), and particle number (PN) emissions compared to B0, while nitrogen oxide (NOX) emissions remained similar. Higher biodiesel content significantly reduced petroleum diesel consumption, but no statistically significant differences were found in total carbon dioxide (CO2) emissions and fuel consumption. Various factors such as vehicle speed, payload, and cold starts influence tailpipe emissions and fuel consumption. Specifically, high-speed phases notably reduced CO, HC, and PN emissions with the use of biodiesel blends. Lower payloads were linked to decreased CO2 emissions and fuel consumption but increased NOX emissions. Cold starts increased HC and NOX emissions, especially with higher biodiesel blending ratios. These results can provide valuable empirical insights into palm oil biodiesel emissions. © 2024 Elsevier B.V.

关键词： Low emission

来源：评论

学校读者我要写书评

暂无评论

Credibility Evaluation of Pems Measurements in Rde Tests: Nox Measurement Uncertainty

SSRN

引用

SSRN 2022年

作者： Su, Sheng Hou, Pan Lyu, Liqun Wang, Xin Lyu, Tao Lai, Yitu Luo, Wanyou Ge, Yunshan Wang, Yachao Wang, Qihu College of Marine Equipment and Mechanical Engineering Jimei University Xiamen361021 China Xiamen Environment Protection Vehicle Emission Control Technology Center Xiamen361023 China National Laboratory of Automotive Performance & Emission Test School of Mechanical Engineering Beijing Institute of Technology Beijing100081 China State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation Chinese Research Academy of Environmental Sciences Beijing100012 China Qinghai Plateau Technology Development Co. Ltd. Xining810000 China

First systematic evaluation on the NOx measurement uncertainty of Portable emission Measurement System (PEMS) has been completed in China. Zero and span drift, parameters directly related to the measurement accuracy, were re-evaluated, and the results showed that the zero and step drifts were not linear or stepped, which were independent of to the boundary conditions or measurement principle. The range of zero drift was ± 3.0ppm, meanwhile, more than 95% span drifts were within a range of 1.5%. Then the largest additional NOx emissions due to the step zero drift of 3ppm was 9.4mg/km with the worst case being 6.6mg/km by span drift under Worldwide Light-Duty vehicle Test Cycle(WLTC). Bring these parameters into the evaluation framework, the NOx measurement uncertainty corresponding to China-6a and China-6b were 37.1% and 56.3% respectively, which are larger than previous EU evaluation results, mainly due to the more stringent NOx limit. © 2022, The Authors. All rights reserved.

关键词： Uncertainty analysis

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：