资源类型

期刊论文 588

会议视频 35

会议专题 1

年份

2024 2

2023 122

2022 105

2021 72

2020 36

2019 40

2018 27

2017 27

2016 24

2015 23

2014 16

2013 13

2012 23

2011 24

2010 19

2009 11

2008 9

2007 10

2006 3

2003 1

展开 ︾

关键词

碳中和 24

能源 10

二氧化碳 6

低碳经济 6

环境 6

低碳发展 4

低碳 3

天然气 3

CCS 2

产业结构 2

光催化 2

化学吸收 2

化石能源 2

协同效应 2

固体氧化物燃料电池 2

土地利用变化 2

情景分析 2

碳基燃料 2

碳达峰 2

展开 ︾

检索范围：

排序： 展示方式：

Online control of biofilm and reducing carbon dosage in denitrifying biofilter: pilot and full-scale

Xiuhong Liu, Hongchen Wang, Qing Yang, Jianmin Li, Yuankai Zhang, Yongzhen Peng

《环境科学与工程前沿（英文）》 2017年 第11卷 第1期 doi: 10.1007/s11783-017-0895-9

摘要： Online control of DNBF was studied in the pilot-scale and full-scale experiments. DNBF was controlled by the online monitored effluent nitrate and turbidity. The effluent nitrate lower than 3 mg·L and saving 18% of carbon were both achieved. Denitrifying biofilter (DNBF) is widely used for advanced nitrogen removal in the reclaimed wastewater treatment plants (RWWTPs). Manual control of DNBF easily led to unstable process performance and high cost. Consequently, there is a need to automatic control of two decisive operational processes, carbon dosage and backwash, in DNBF. In this study, online control of DNBF was investigated in the pilot-scale DNBF (600 m ·d ), and then applied in the full-scale DNBF (10 × 104 m3·d ). A novel simple online control strategy for carbon dosage with the effluent nitrate as the sole control parameter was designed and tested in the pilot-scale DNBF. Backwash operation was optimized based on the backwash control strategy using turbidity as control parameter. Using the integrated control strategy, in the pilot-scale DNBF, highly efficient nitrate removal with effluent TN level lower than 3 mg·L was achieved and DNBF was not clogged any more. The online control strategy for carbon dosage was successfully applied in a RWWTP. Using the online control strategy, the effluent nitrate concentration was controlled relatively stable and carbon dosage was saved for 18%.

关键词： Reclaimed water treatment     Denitrifying biofilter     Carbon dosage     Backwash control    

HTML PDF 收藏

Impact of food to microorganism ratio and alcohol ethoxylate dosage on methane production in treatment

Yulun Nie, Xike Tian, Zhaoxin Zhou, Yu-You Li

《环境科学与工程前沿（英文）》 2017年 第11卷 第6期 doi: 10.1007/s11783-017-0947-1

摘要： The effects of food to microorganism (F/M) ratio and alcohol ethoxylate (AE) dosage on the methane production potential were investigated in treatment of low-strength wastewater by a submerged anaerobic membrane bioreactor (SAnMBR). The fate of AE and its acute and/or chronic impact on the anaerobic microbes were also analyzed. The results indicated that AE had an inhibitory effect to methane production potential (lag-time depends on the AE dosage) and the negative effect attenuated subsequently and methane production could recover at F/M ratio of 0.088–0.357. VFA measurement proved that AE was degraded into small molecular organic acids and then converted into methane at lower F/M ratio (F/M<0.158). After long-term acclimation, anaerobic microbe could cope with the stress of AE by producing more EPS (extracellular polymeric substances) and SMP (soluble microbial products) due to its self-protection behavior and then enhance its tolerance ability. However, the methane production potential was considerably decreased when AE was present in wastewater at a higher F/M ratio of 1.054. Higher AE amount and F/M ratio may destroy the cell structure of microbe, which lead to the decrease of methane production activity of sludge and methane production potential.

关键词： Anaerobic membrane bioreactor AnMBR     F/M ratio     Surfactant     Wastewater     Methane production     Influence    

HTML PDF 收藏

Broadening of appropriate demulsifier dosage range for latex-containing wastewater by sulfate addition

Shengzhi Zheng, Yudong Song, Yiming Li, Lidong Sun, Bin Hu, Mingdong An, Yuexi Zhou

《环境科学与工程前沿（英文）》 2018年 第12卷 第6期 doi: 10.1007/s11783-018-1041-z

摘要：

The effect of latex concentration on appropriate demulsifier dosage was investigated.

The appropriate demulsifier dosage range was controlled by zeta potential.

Sulfate could broaden appropriate demulsifier dosage range and improve latex removal.

关键词： Demulsification     Polybutadiene latex wastewater     Polyaluminum chloride     Zeta potential     Sulfate addition    

HTML PDF 收藏

An investigation on patient dose in screen-film diagnostic radiology in Lhasa City, Xizang Autonomous Region, China

null

《医学前沿（英文）》 2013年 第7卷 第4期   页码 506-509 doi: 10.1007/s11684-013-0294-y

摘要：

This study aimed to investigate patient dose in diagnostic screen-film radiographic examinations in the city of Lhasa, China. Seven out of the twenty-six hospitals registered with the Lhasa Health Bureau were included in the investigation. The entrance surface air Kerma (ESAK) of seven conventional screen-film radiology X-ray equipment in these hospitals was measured with a QA dosimeter in September 2012. The X-ray examinations were divided into three categories: PA (posterior-anterior) chest, upper/lower limb, and AP (anterior-posterior) lumbar spine. For each category, ESAKs were calculated and analyzed. The mean ESAK was 0.6 mGy for PA chest, 0.3 mGy for upper/lower limb, and 1.8 mGy for AP lumbar spine. In addition, the mean ESAK value recorded for PA chest X-ray examinations exceeded the corresponding value recommended by the International Atomic Energy Agency (0.4 mGy).

关键词： radiation dosage     radiology     radiation protection     radiography/statistics & numerical data    

HTML PDF 收藏

化肥过度施用的原因分析——基于销售商视角

连煜阳, 刘静, 金书秦, 刘宏斌, 武淑霞

《中国工程科学》 2018年 第20卷 第5期   页码 112-119 doi: 10.15302/J-SSCAE-2018.05.017

摘要：

本文从肥料流通环节分析化肥过度施用的原因，分析肥料传统二级营销模式，了解肥料流通环节现状，利用肥料经销商的实地调研数据，对肥料经销商行为进行实证分析。研究发现肥料流通环节赊销现象严重，大大增加流通成本，使肥料价格虚高，肥料产品的宣传推广工作和农户赊销产生的资金风险增加了经销商的经营成本，经销商为保证盈利，会倾向于增加肥料推荐用量，导致农户过量施用化肥；此外，肥料经销商整体专业知识水平较低，参加农业技术培训可以使经销商更科学地推荐肥料用量。为此，建议提高肥料经销商市场准入门槛，优化对肥料经销商的培训，努力缓解肥料流通环节赊销压力。

关键词： 肥料     经销商     赊销行为     推荐用量    

HTML PDF 收藏

AGRICULTURAL GREEN DEVELOPMENT TO ACHIEVE FOOD SECURITY AND CARBON REDUCTION IN THE CONTEXT OF CHINA’S DUAL CARBON GOALS

《农业科学与工程前沿（英文）》 2023年 第10卷 第2期   页码 262-267 doi: 10.15302/J-FASE-2023496

摘要：

● To achieve food security, Chinese agriculture– food system could not achieve C neutrality.

关键词： agriculture     carbon neutrality     carbon peak     food security     carbon mitigation strategies    

HTML PDF 收藏

Research on low carbon management using a scientific classification method

Shanna QI, Meiting JU, Meng DUAN, Wei XING

《环境科学与工程前沿（英文）》 2012年 第6卷 第4期   页码 524-530 doi: 10.1007/s11783-011-0333-3

摘要： This research is aimed at the rapid development of a low-carbon economy, in which we propose the classification and application of relevant management measures to affect the development of environmental management ideas and measures of the low-carbon economy, which we called as low carbon management measures. According to scientific analysis of the low-carbon economy, we can divide low-carbon management measures into three parts: measures for reduction of carbon sources, carbon flow planning, and increase of carbon sinks. Furthermore, we list the advantages that China can utilize to develop its own low-carbon management measures. In the end, necessary adjustments to environmental management measures in China can be made according to this scientific classification.

关键词： low-carbon economy     low carbon management     carbon source     carbon flow     carbon sink    

HTML PDF 收藏

Thoughts on strategies and paths to achieve carbon peaking and carbon neutrality in China

《能源前沿（英文）》 2023年 第17卷 第3期   页码 324-331 doi: 10.1007/s11708-023-0883-7

摘要： First, a brief introduction is made to the four basic judgments and understandings of the goals of “carbon peaking and carbon neutrality.” Then, an in-depth elaboration is provided on the eight major strategies for achieving the goals of “carbon peaking and carbon neutrality,” including conservation and efficiency priority, energy security, non-fossil energy substitution, re-electrification, resource recycling, carbon sequestration, digitalization and cooperation between countries. Next, eight major implementation paths for achieving the goals of “carbon peaking and carbon neutrality” are discussed in detail, including industrial restructuring; building a clean, low-carbon, safe and efficient energy system, and renewing the understanding of China’s energy resource endowment; accelerating the construction of a new-type power system with a gradually growing proportion of new energy, and realizing the “possible triangle” of high-quality energy system development; utilizing electrification and deep decarbonization technologies to promote the orderly peaking and gradual neutralization of carbon emissions in the industrial sector; promoting the low-carbon transition of transportation vehicles to achieve carbon peaking and carbon neutrality in the transportation sector; focusing on breaking through key green building technologies to achieve zero carbon emissions from building electricity and heat; providing a strong technical support for carbon removal to achieve carbon neutrality; accelerating the construction of the integrated planning and assessment mechanism for pollution and carbon reduction, establishing a sound strategy, planning, policy and action system, and optimizing the carbon trading system. Afterwards, it is particularly pointed out that the realization of the goals of “carbon peaking and carbon neutrality” cannot be separated from the support of sci-tech innovation. Finally, it is stressed that carbon neutrality is not the end, but an important milestone. If viewed from the perspective of future energy, the significance and historical status of the goals of “carbon peaking and carbon neutrality” will be more understandable.

关键词： carbon peaking and carbon neutrality     strategy     implementation path     important sci-tech innovation implementation path    

HTML PDF 收藏

HIGHLIGHTS OF THE SPECIAL ISSUE “CARBON NEUTRALITY AND A LOW CARBON ECONOMY FOR AGRICULTURE”

《农业科学与工程前沿（英文）》 2023年 第10卷 第2期   页码 153-154 doi: 10.15302/J-FASE-2023497

摘要： HIGHLIGHTS OF THE SPECIAL ISSUE “CARBON NEUTRALITY AND A LOW CARBON ECONOMY FOR AGRICULTURE”

关键词： CARBON     ISSUE     NEUTRALITY     HIGHLIGHTS     AGRICULTURE    

HTML PDF 收藏

LIVESTOCK AND POULTRY MANURE MANAGEMENT FROM THE PERSPECTIVE OF CARBON NEUTRALITY IN CHINA

《农业科学与工程前沿（英文）》 2023年 第10卷 第3期   页码 341-362 doi: 10.15302/J-FASE-2023509

摘要：

● Carbon reduction potential of manure treatment technologies was summarized.

关键词： valorization of animal manure     manure management     carbon emission     carbon footprint     methodology     carbon trading    

HTML PDF 收藏

Correlation between carbon emissions and energy structure –Reliability analysis of low carbon target

Ben HUA

《能源前沿（英文）》 2011年 第5卷 第2期   页码 214-220 doi: 10.1007/s11708-010-0133-7

摘要： The influence of energy intensity on carbon intensity depends upon the fraction of energy mixes with high carbon emissions in the total energy mixes . The correlation of with a variety of primary energy mix fractions and technology advances such as CCS and CCHP is analyzed and deduced. Taking the long-term carbon reduction target in 2050 settled upon by the Copenhagen Agreement and the mid-term target suggested by the “450 Scenes Program” of the International Energy Agency (IEA) as constraints, the new pattern of the energy transition of the world in 2020, 2030, and 2050 are estimated and figured out. The peak value of energy consumption will lag behind the peak value of carbon emissions; the world energy structure shifting point will be in 2020–2025. Estimates show that China’s mid-2020 and long-term targets of energy-saving and emission reduction announced by the Chinese government might be achieved.

关键词： correlation     carbon emissions     energy consumption     high carbon emissions energy mix     target of emission reduction     reliability    

HTML PDF 收藏

A global carbon market?

Michael G. POLLITT

《工程管理前沿（英文）》 2019年 第6卷 第1期   页码 5-18 doi: 10.1007/s42524-019-0011-x

摘要：

This paper explores the prospects for a global carbon market as the centerpiece of any serious attempt to reach the ambitious goal for greenhouse gas (GHG) reductions set by climate scientists. My aim is to clarify the extent to which we know what policy might best support global decarbonisation. We begin by discussing what we might mean by a global carbon market and its theoretical properties. We then go on to discuss the EU Emissions Trading System experience and the recent experience with the Australian carbon tax. Next, we assess recent carbon market initiatives in the US and in China. My argument is that while establishing the amount of emissions required and dividing it up acceptably between countries requires an enormous scientific and international negotiations effort, the economic instruments to deliver the agreed targets are readily at hand.

关键词： carbon market     carbon tax     EU ETS    

HTML PDF 收藏

Insights into carbon-based materials for catalytic dehydrogenation of low-carbon alkanes and ethylbenzene

《化学科学与工程前沿（英文）》 2023年 第17卷 第11期   页码 1623-1648 doi: 10.1007/s11705-023-2328-6

摘要： Direct dehydrogenation with high selectivity and oxidative dehydrogenation with low thermal limit has been regarded as promising methods to solve the increasing demands of light olefins and styrene. Metal-based catalysts have shown remarkable performance for these reactions, such as Pt, CrOx, Co, ZrOx, Zn and V. Compared with metal-based catalysts, carbon materials with stable structure, rich pore texture and large surface area, are ideal platforms as the catalysts and the supports for dehydrogenation reactions. In this review, carbon materials applied in direct dehydrogenation and oxidative dehydrogenation reactions including ordered mesoporous carbon, carbon nanodiamond, carbon nanotubes, graphene and activated carbon, are summarized. A general introduction to the dehydrogenation mechanism and active sites of carbon catalysts is briefly presented to provide a deep understanding of the carbon-based materials used in dehydrogenation reactions. The unique structure of each carbon material is presented, and the diversified synthesis methods of carbon catalysts are clarified. The approaches for promoting the catalytic activity of carbon catalysts are elaborated with respect to preparation method optimization, suitable structure design and heteroatom doping. The regeneration mechanism of carbon-based catalysts is discussed for providing guidance on catalytic performance enhancement. In addition, carbon materials as the support of metal-based catalysts contribute to exploiting the excellent catalytic performance of catalysts due to superior structural characteristics. In the end, the challenges in current research and strategies for future improvements are proposed.

关键词： carbon materials     dehydrogenation     active sites     mechanism     catalytic performance     support    

HTML PDF 收藏

VALORIZATION OF LIVESTOCK WASTE AND CARBON NEUTRALITY

《农业科学与工程前沿（英文）》 2023年 第10卷 第3期   页码 333-340 doi: 10.15302/J-FASE-2023513

摘要： VALORIZATION OF LIVESTOCK WASTE AND CARBON NEUTRALITY

关键词： WASTE     CARBON     VALORIZATION     NEUTRALITY    

HTML PDF 收藏

Hierarchically porous zeolites synthesized with carbon materials as templates

《化学科学与工程前沿（英文）》 2021年 第15卷 第6期   页码 1444-1461 doi: 10.1007/s11705-021-2090-6

摘要： Hierarchically porous zeolites are promising candidates in catalytic conversion of relatively bulky molecules, and their syntheses have attracted significant attention. From both industrial and scientific perspectives, different carbon materials have been widely employed as hard templates for the preparation of hierarchically porous zeolites during the past two decades. In this review, the progress in synthetic strategies using carbon materials as templates is comprehensively summarized. Depending on the affinity between the carbon templates and zeolite precursors, the substantial strategies for synthesizing hierarchical zeolites are introduced in direct templates and indirect templates. Direct templates methods, by which the carbon materials are directly mixed with precursors gel as hard templates, are first reviewed. Then, we discuss the indirect templates method (crystallization of carbon-silica composites), by which the carbon is produced by in situ pyrolysis of organic-inorganic precursors. In addition, the technique of encapsulating metal species into zeolites crystals with the assistance of carbon templates is also discussed. In the conclusion part, the factors affecting the synthesis of carbon-templated hierarchically porous zeolites are remarked. This review is expected to attract interest in the synthesis strategies of hierarchically porous zeolites, especially cost-effective and large-scale production methodologies, which are essential to the industrial application of hierarchical zeolites.

关键词： hierarchical zeolites     carbon materials     direct templates     indirect templates     carbon-silica composites    

HTML PDF 收藏

标题 作者 时间 类型 操作

Online control of biofilm and reducing carbon dosage in denitrifying biofilter: pilot and full-scale

Xiuhong Liu, Hongchen Wang, Qing Yang, Jianmin Li, Yuankai Zhang, Yongzhen Peng

期刊论文

Impact of food to microorganism ratio and alcohol ethoxylate dosage on methane production in treatment

Yulun Nie, Xike Tian, Zhaoxin Zhou, Yu-You Li

期刊论文

Broadening of appropriate demulsifier dosage range for latex-containing wastewater by sulfate addition

Shengzhi Zheng, Yudong Song, Yiming Li, Lidong Sun, Bin Hu, Mingdong An, Yuexi Zhou

期刊论文

An investigation on patient dose in screen-film diagnostic radiology in Lhasa City, Xizang Autonomous Region, China

null

期刊论文

化肥过度施用的原因分析——基于销售商视角

连煜阳, 刘静, 金书秦, 刘宏斌, 武淑霞

期刊论文

AGRICULTURAL GREEN DEVELOPMENT TO ACHIEVE FOOD SECURITY AND CARBON REDUCTION IN THE CONTEXT OF CHINA’S DUAL CARBON GOALS

期刊论文

Research on low carbon management using a scientific classification method

Shanna QI, Meiting JU, Meng DUAN, Wei XING

期刊论文

Thoughts on strategies and paths to achieve carbon peaking and carbon neutrality in China

期刊论文

HIGHLIGHTS OF THE SPECIAL ISSUE “CARBON NEUTRALITY AND A LOW CARBON ECONOMY FOR AGRICULTURE”

期刊论文

LIVESTOCK AND POULTRY MANURE MANAGEMENT FROM THE PERSPECTIVE OF CARBON NEUTRALITY IN CHINA

期刊论文

Correlation between carbon emissions and energy structure –Reliability analysis of low carbon target

Ben HUA

期刊论文

A global carbon market?

Michael G. POLLITT

期刊论文

Insights into carbon-based materials for catalytic dehydrogenation of low-carbon alkanes and ethylbenzene

期刊论文

VALORIZATION OF LIVESTOCK WASTE AND CARBON NEUTRALITY

期刊论文

Hierarchically porous zeolites synthesized with carbon materials as templates

期刊论文