检索结果-南通市图书馆

A pulsed switching peroxi-coagulation process to control hydroxyl radical production and to enhance 2,4-Dichlorophenoxyacetic acid degradation

引用

Frontiers of Environmental Science & Engineering 2018年第5期12卷 86-90页

作者： Yaobin Lu Songli He Dantong Wang Siyuan Luo Aiping Liu Haiping Luo Guangli Liu Renduo Zhang Guangdong provincial key laboratory of Environmental pollution control and Remediation Technology School of Environmental Science and EngineeringSun Yat-sen UniversityGuangzhou 510006China Zhaoqing Environmental monitoring Station Zhaoqing Institute of Environmental ScienceZhaoqing 526040China Nanjing Institute of Environmental Sciences Ministry of Environmental ProtectionNanjing 210042China

The aim of this study was to develop a new pulsed switching peroxi-coagulation system to control hydroxyl radical(∙OH)production and to enhance 2,4-Dichlorophenoxyacetic acid(2,4-D)degradation.The system was constructed with a sacrifice iron anode,a Pt anode,and a gas diffusion cathode.Production of H_(2)O_(2) and Fe^(2+)was controlled separately by time delayers with different pulsed switching frequencies.Under current densities of 5.0 mA/cm^(2)(H_(2)O_(2))and 0.5 mA/cm^(2)(Fe^(2+)),the∙OH production was optimized with the pulsed switching frequency of 1.0 s(H_(2)O_(2)):0.3 s(Fe^(2+))and the ratio of H_(2)O_(2) to Fe^(2+)molar concentrations of 6.6.Under the optimal condition,2,4-D with an initial concentration of 500 mg/L was completely removed in the system within 240 min.The energy consumption for the 2,4-D removal in the system was much lower than that in the electro-Fenton process(686 vs.13610 kWh/kg TOC).The iron consumption in the system was~20 times as low as that in the peroxi-coagulation process(19620 vs.3940400 mg/L)within 240 min.The system should be a promising peroxi-coagulation method for organic pollutants removal in wastewater.

关键词： Pulsed switching peroxi-coagulation system Energy consumption Hydroxyl radical production 2,4-Dichlorophenoxyacetic acid

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Recent advances in bismuth-based multimetal oxide photocatalysts for hydrogen production from water splitting:Competitiveness,challenges,and future perspectives

引用

Materials Reports(Energy) 2021年第2期1卷 22-34页

作者： Zheng Zhu Shipeng Wan Yunxia Zhao Yaxin Gu Yaobin Wang Yong Qin Zhihui Zhang Xinlei Ge Qin Zhong Yunfei Bu Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC)UNIST-NUIST Research Center of Environment and Energy(UNNU)School of Environmental Science and TechnologyNanjing University of Information Science and Technology(NUIST)210044PR China School of Chemical and Engineering Nanjing University of Science and TechnologyNanjing210094PR China Jiangsu key laboratory of Advanced Materials and Technology School of Petrochemical EngineeringChangzhou UniversityChangzhouJiangsu213164PR China Jiangsu key laboratory of Advanced Catalytic Materials and Technology Changzhou UniversityChangzhou213164PR China

The efficient utilization of photocatalytic technology is essential for clean energy.Bismuth-based multimetal oxides(Bi_(2)WO_(6),Bi_(2)MoO_(6),BiVO_(4)and Bi_(4)Ti_(3)O_(12))have aroused widespread attention as a visible light responsive photocatalyst for hydrogen evolution due to their low cost,nontoxicity,modifiable morphology,and outstanding optical and chemical properties.Nevertheless,the photocatalytic activities of pure materials are unsatisfactory because of their relative small specific surface area,poor quantum yield,and the rapid recombination of photogenerated carriers.Therefore,some modification strategies,including morphological control,semiconductor combination,doping,and defect engineering,have been systematically studied to enhance photocatalytic H_(2)evolution activity in the past few years.Herein,we summarize the recent research progress on bismuth-based photocatalysts,pointing out the prospects,opportunities and challenges of bismuth-based photocatalysts.Eventually,we aims to put forward valuable suggestions for designing of bismuth-based photocatalysts applied in hydrogen production on the premise of consolidating the existing theoretical basis of photocatalysis.

关键词： Bi_(2)WO_(6) Bi_(2)MoO_(6) BiVO_(4) Bi_(4)Ti_(3)O_(12) Morphological control Semiconductor combination Heterojunction Doping Defect Hydrogen production

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A satellite-derived,ground-measurement-independent monthly PM_(2.5)mass concentration dataset over China during 2000-2015

引用

Big Earth Data 2022年第4期6卷 633-649页

作者： Ying Zhang Zhengqiang Li Yuanyuan Wei Zongren Peng State Environmental Protection key laboratory of Satellite Remote Sensing Aerospace Information Research InstituteChinese Academy of SciencesBeijingChina

Following the accelerated development of urbanization and industrialization,atmospheric particulate matter has become a significant threat to public health globally.Environmental health studies usually use the mass concentration of fine particles(PM_(2.5))as a base data to predict the health risks of particulate exposure.However,PM_(2.5)data from ground monitoring stations in China has not been provided until January 2013 by the Ministry of Environmental Protection of China.Hence,an alternative dataset of PM_(2.5)spatiotemporal distributions extending to years earlier than 2013 is urgently needed,which is of great significance to atmospheric environment assessment and pollution prevention and control.Atmospheric aerosol products by the moderate-resolution imaging spectroradiometer(MODIS)have been released since 2000,which provides the possibility to reconstruct historical PM_(2.5).However,most current methods do not have the ability to estimate PM_(2.5)mass concentration independently of ground observations.The PM_(2.5)mass concentration data set produced by PM_(2.5)remote sensing(PMRS)model based on physical processes does not depend on the ground observations,and also is not affected by the uncertainty of model emission sources or the completeness of chemical reaction mechanism.These ensure that the point-by-point validation for PM_(2.5)mass concentration data is more convincing,and the dataset can also be further used for model assimilation and artificial intelligence training to improve their predictions.In this study,we calculate the monthly PM_(2.5)mass concentration near the ground over land of China using aerosol inversion products(aerosol optical depth and fine-mode fraction)of MODIS and meteorological data(boundary layer height&relative humidity)provided by the Modern-Era Retrospective Analysis for Research and Applications Version 2(MERRA-2)data set.The results show that,in China,6 pollution centers mainly concentrated in the central and eastern regions.The highest PM_(2.5)mass concentration occurred i

关键词： PM_(2.5) data set satellitederived China monthly

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Overseas immigration of fall armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae), invading Korea and Japan in 2019

引用

Insect Science 2022年第2期29卷 505-520页

作者： Ming-Fei Wu Guo-Jun Qi Hui Chen Jian Ma Jie Liu Yu-Ying Jiang Gwan-Seok Lee Akira Otuka Gao Hu College of Plant Protection Nanjing Agricultural UniversityNanjing210095 China Guangdong provincial key laboratory of High Technology for Plant Protection/Plant Protection Research Institute Guangdong Academy of Agricultural SciencesGuangzhou510640 China Division of Pest Forecasting China National Agro-Tech Extension and Service CenterBeijing100026 China Department of Agro-food Safety and Crop Protection National Institute of Agricultural SciencesWanju55365 Korea Institute of Agricultural Machinery National Agriculture and Food Research OrganizationTsukuba3058517 Japan

The fall armyworm(FAW),Spodoptera frugiperda(J.E.Smith),spread rapidly in Africa and Asia recently,causing huge economic losses in crop production.Fall armyworm caterpillars were first detected in South Korea and Japan in June 2019.Here,the migration timing and path for FAW into the countries were estimated by a trajectory simulation approach implementing the insect's flight behavior.The result showed that FAWs found in both South Korea and Japan were estimated to have come from eastern China by crossing the Yellow Sea or the East China Sea in 10–36 h in three series of migrations.In the first series,FAW moths that arrived on Jeju Island during 22–24 May were estimated to be from Zhejiang,Anhui and fujian Provinces after 1–2 nights’flights.In the second series,it was estimated that FAW moths landed in southern Korea and Kyushu region of Japan simultaneously or successively during 5–9 June,and these moths mostly came from Guangdong and fujian Provinces.The FAW moths in the third series were estimated to have immigrated from Taiwan Province onto Okinawa Islands during 19–24 June.During these migrations,southwesterly low-level jets extending from eastern China to southern Korea and/or Japan were observed in the northwestern periphery of the western Pacific Subtropical High.These results,for the first time,suggested that the overseas FAW immigrants invading Korea and Japan came from eastern and southern China.This study is helpful for future monitoring,early warning and the source control of this pest in the two countries.

关键词： Asian migration arena atmospheric circulation Spodoptera frugiperda trajectory analysis windbome insect migration

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Performance Assessment and Outlook of China＇s Emission-Trading Scheme

引用

Engineering 2016年第4期2卷 398-401页

作者： Dabo Guan Yuli Shan Zhu Liu Kebin He Tyndall Centre for Climate Change Research School of International Development University of East Anglia Norwich NR4 7TJ UK Resnick Sustainability Institute California Institute of Technology Pasadena CA 91125 USA State key Joint laboratory of Environmentul Simulation and pollution control School of Environment Tsinghua University Beijing 100084 China

《1. Overview》1. OverviewChina overtook the US as the world’s top emitter in 2007, and produced 1.5 times the emissions of the US by 2013 [1]. At present, China’s emissions make up over a quarter of the global total. China is expected to produce three times the emissions of the US by 2030 [2]. Indeed, China’s role and efforts in CO2 reductions matter greatly for the peaking of global emissions, even without further emission leakages to less-developed regions or countries. China recently announced the launch of a nation-wide emission-trading scheme (ETS) starting in 2017 [3] in order to help deliver its emission peak by 2030. A number of climate policies in China are ongoing, and require a full performance review, effective coordination, and appropriate implementation of planning and monitoring measures along with any newly added mechanisms. This paper utilizes the latest energy and emission data to explore the impact of emission trading as a policy driver toward absolute emission and emission intensity changes in China and in its seven provinces or municipalities.《2. China’s efforts toward carbon emission control》2. China’s efforts toward carbon emission controlChina has initiated an ambitious plan to fight climate change, having already undertaken emission controls under the central commanding administration. A number of policies have been established over the past two decades. In the National Scheme on Climate Change published in June 2007 [4], the National Development and Reform Commission (NDRC) promised to make efforts to control greenhouse gas (GHG) emissions and produce a 20% reduction in per GDP energy consumption by 2010. The NDRC also issued mandatory environmental targets to be implemented through the national Five-Year Plan. In the 11th Five-Year Plan (2006-2010), China issued targets for a 20% reduction in energy consumption per unit of GDP (referred to as the Emission Intensity (EI) policy) [5,6]. In the 12th Five-Year Plan (2011-2015), China introduced a market-based domestic ETS; the mechanism

关键词：排放交易绩效评价中国

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particulate matter trends and quantification of the spring sand-dust contribution in Hohhot,Inner Mongolia,from 2013 to 2017

引用

Atmospheric and Oceanic Science Letters 2021年第2期14卷 81-86页

作者： Wenkang Gao Lingyun Zhu Zhanyun Ma Qingxian Gao Xuepu Yu Sufen Wu Yu Gu State key laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of ScienceBeijingChina Environmental monitoring Center Station of Inner Mongolia Autonomous HohhotChina Shanxi Province Institute of Meteorological Sciences Shanxi Provincial Meteorological BureauTaiyuanChina Chinese Research Academy of Environmental Sciences BeijingChina Chifeng Ecological Environment monitoring Centre ChifengChina Shanxi Province Changzhi Meteorological Bureau ChangzhiChina

2013年9月国务院颁布了《大气污染防治行动计划》.研究其实施前后呼和浩特市大气污染物浓度变化及及原因;同时,分析了春季沙尘天气对于呼和浩特市大气环境颗粒物浓度的定量影响.结果表明:呼和浩特市大气环境质量持续改善,但大气污染物... 详细信息

2013年9月国务院颁布了《大气污染防治行动计划》.研究其实施前后呼和浩特市大气污染物浓度变化及及原因;同时,分析了春季沙尘天气对于呼和浩特市大气环境颗粒物浓度的定量影响.结果表明:呼和浩特市大气环境质量持续改善,但大气污染物浓度仍然较高.PM_(2.5)和PM10年均浓度分别超过国家二级标准22.9%和35.7%;2013-2017年春季PM_(2.5)和PM10浓度降幅较大,沙尘天气对呼和浩特市PM_(2.5),PM10,和TSP浓度的绝对贡献范围分别在0.6-5.2μg m^(-3),9.0-16.9μg m^(-3)和14.7-30.0μg m^(-3).

关键词：《大气污染防治行动计划》大气污染春季沙尘天气呼和浩特

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Review on recent progress in on-line monitoring technology for atmospheric pollution source emissions in China

引用

Journal of Environmental Sciences 2023年第1期123卷 367-386页

作者： Huanqin Wang Jitong Zhou Xue Li Qiang Ling Hongyuan Wei Lei Gao Ying He Ming Zhu Xiao Xiao Youjiang Liu Shan Li Chilai Chen Guotao Duan Zhimin Peng Peili Zhou Yufeng Duan Jianbing Wang Tongzhu Yu Yixin Yang Jiguang Wang Zhen Zhou Huaqiao Gui Yanjun Ding State key laboratory of Transducer Technology Institute of Intelligent MachinesHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Institute of Mass Spectrometry and Atmospheric Environment Jinan UniversityGuangzhou 510632China Department of Automation University of Science and Technology of ChinaHefei 230027China China Automotive Technology and Research Center Tianjin 300300China Institute of Solid State Physics Chinese Academy of SciencesHefei 230031China key laboratory of Environmental Optics and Technology Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031China School of Electronic Information and Communications Huazhong University of Science and TechnologyWuhan 430074China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China State key laboratory of Power Systems Department of Energy and Power EngineeringTsinghua UniversityBeijing 100084China key laboratory of Energy Thermal Conversion and control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096China School of Chemical and Environmental Engineering China University of Mining and Technology(Beijing)Beijing 100083China CAS Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China

Emissions from mobile sources and stationary sources contribute to atmospheric pollution in China,and its components,which include ultrafine particles(UFPs),volatile organic compounds(VOCs),and other reactive gases,such as NH3and NOx,are the most harmful to human health.China has released various regulations and standards to address pollution from mobile and stationary sources.Thus,it is urgent to develop online monitoring technology for atmospheric pollution source emissions.This study provides an overview of the main progress in mobile and stationary source monitoring technology in China and describes the comprehensive application of some typical instruments in vital areas in recent years.These instruments have been applied to monitor emissions from motor vehicles,ships,airports,the chemical industry,and electric power generation.Not only has the level of atmospheric environment monitoring technology and equipment been improving,but relevant regulations and standards have also been constantly updated.Meanwhile,the developed instruments can provide scientific assistance for the successful implementation of regulations.According to the potential problem areas in atmospheric pollution in China,some research hotspots and future trends of atmospheric online monitoring technology are summarized.Furthermore,more advanced atmospheric online monitoring technology will contribute to a comprehensive understanding of atmospheric pollution and improve environmental monitoring capacity.

关键词： Atmospheric pollution Mobile sources Stationary sources On-line monitoring technology

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

中国1 km分辨率人为源排放清单及其在空气质量模拟中的应用

引用

Science Bulletin 2021年第6期66卷 612-620,M0004页

作者：郑博程静耿冠楠王鑫李萌施沁人齐霁雷宇张强贺克斌 Institute of Environment and Ecology Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Ministry of Education key laboratory for Earth System Modeling Department of Earth System ScienceTsinghua UniversityBeijing 100084China State key Joint laboratory of Environment Simulation and pollution control School of EnvironmentTsinghua UniversityBeijing 100084China China National Environmental monitoring Center Beijing 100012China Center for Environmental Risk and Damage Assessment Chinese Academy of Environmental PlanningBeijing 100012China Center for Regional Air Quality Simulation and control Chinese Academy of Environmental PlanningBeijing 100012China

在中国开展精细尺度空气质量模拟目前面临缺少高分辨率排放清单的困难.现有排放清单仅有部分排放源具有准确的排放空间分布(点源),其他排放源(面源)均在省级尺度上核算排放并依据近似参数分配到空间网格,这一方法产生的排放源数据在精... 详细信息

在中国开展精细尺度空气质量模拟目前面临缺少高分辨率排放清单的困难.现有排放清单仅有部分排放源具有准确的排放空间分布(点源),其他排放源(面源)均在省级尺度上核算排放并依据近似参数分配到空间网格,这一方法产生的排放源数据在精细网格尺度上具有较大不确定性.本研究构建了一套覆盖中国近10万个工业点源的排放源数据库,将其成功耦合到中国多尺度排放清单模型,构建了1 km分辨率中国人为源排放清单.这套高分辨率排放数据大幅提升了中国人为源排放清单的点源化比例,各项污染物点源化率从低于30%提升到最高84%(二氧化硫),显著改善了千米尺度的空气质量模拟效果,大幅减少了与观测数据比较的模型模拟偏差.

关键词：排放清单排放源省级尺度空间网格源数据网格尺度人为源数据库

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

碳材料基太阳能蒸发系统的结构与发展

引用

Science Bulletin 2021年第14期66卷 1472-1483,M0004页

作者：何文周磊王苗曹阳陈雪梅侯旭 State key laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Research Institute for Biomimetics and Soft Matter Fujian Provincial Key Laboratory for Soft Functional Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen UniversityXiamen 361005China College of Materials Xiamen UniversityXiamen 361005China MIIT key laboratory of Thermal control of Electronic Equipment School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing 210094China Collaborative Innovation Center of Chemistry for Energy Materials Xiamen UniversityXiamen 361005China Tan Kah Kee Innovation laboratory Xiamen 361102China

由于环境污染和人口增加,水资源缺乏成为限制人类发展和生产的因素.近年来,对碳材料基太阳能驱动的水蒸发(SDWE)系统的结构发展进行了讨论和总结,包括碳纳米颗粒基SDWE系统、单层光热膜基SDWE系统、双层结构光热膜基SDWE系统、多孔碳基... 详细信息

由于环境污染和人口增加,水资源缺乏成为限制人类发展和生产的因素.近年来,对碳材料基太阳能驱动的水蒸发(SDWE)系统的结构发展进行了讨论和总结,包括碳纳米颗粒基SDWE系统、单层光热膜基SDWE系统、双层结构光热膜基SDWE系统、多孔碳基材料SDWE系统和三维(3D)SDWE系统.在这些系统中,3D系统可通过光在微腔中多次反射以增加光吸收率,并且其较大的热交换面积也可促使更多的水蒸发,使其具有重要的应用前景.对于碳材料基SDWE系统基本科学问题的深入理解和器件的设计优化,将有效推动便携式海水淡化器件的应用推广以及太阳能海水淡化工业化的进程.

关键词：水蒸发碳材料碳纳米颗粒碳基材料多次反射系统的结构太阳能驱动环境污染

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

treatment of swine wastewater in aerobic granular reactors： comparison of different seed granules as factors

引用

Frontiers of Environmental Science & Engineering 2015年第6期9卷 1139-1148页

作者： Lin LIU Qiyu YOU Valerie GIBSON Xu HUANG Shaohua CHEN Zhilong YE Chaoxiang LIU key laboratory of Urban Pollutant Conversion Institute of Urban Environment Chinese Academy of Sciences Xiamen 361021 China Ningbo Urban Environment Observation and Research Station Chinese Academy of Sciences Ningbo 315000 China State Environmental Protection key laboratory of Microorganism Application and Risk control Tsinghua University Beijing 100084 China

The granulation process, physic-chemical properties, pollution removal ability and bacterial com- munities of aerobic granules with different feed-waste- water （synthetic wastewater, R1; swine wastewater, R2）, and the change trend of some parameters of two types of granules in long-term operated reactors treating swine wastewater were investigated in this experiment. The result indicated that aerobic granulation with the synthetic wastewater had a faster rate compared with swine waste- water and that full granulation in R 1 and R2 was reached on the 30th day and 39th day, respectively. However, although the feed wastewater also had an obvious effect on the biomass fraction and extracellular polymeric sub- stances of the aerobic granules during the granulation process, these properties remained at a similar level after long-term operation. Moreover, a similar increasing trend could also be observed in terms of the nitrogen removal efficiencies of the aerobic granules in both reactors, and the average specific removal rates of the organics and ammonia nitrogen at the steady-state stage were 35.33mg.g^-1 VSS and 51.46mg.g^-1 VSS for R1, and 35.47mg.g^-1 VSS and 51.72mg.g^-1 VSS for R2, respectively. In addition, a shift in the bacterial diversity occurred in the granulation process, whereas bacterial communities in the aerobic granular reactor were not affected by the seed granules after long-term operation.

关键词： aerobic granules livestock wastewater,sequencing batch reactor biological wastewater treatment,bacterial community

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：