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A low power, eco-friendly multipurpose thermoelectric refrigerator

N. Jagan Mohan REDDY

《能源前沿（英文）》 2016年第10卷第1期页码 79-87 doi: 10.1007/s11708-015-0380-8

摘要： There has been an immense endeavor to mitigate global warming in spite of which it has only been worse. This paper presents the design and implementation of a low power and eco-friendly refrigeration system using the thermoelectric effect. The conventional refrigerators make use of complex mechanisms which involves synchronous operation of various units, namely the compressor, condensers, expansion valves, evaporator, refrigerant and so on. But a thermoelectric refrigerator exploits the principle of the Peltier effect, thus avoiding the utilization of these complex components. This even helps curb the release of harmful chlorofluorocarbons (CFCs) into the atmosphere which contributes to the increase in global temperature. Moreover, the temperature can be controlled and set to required values with the help of a microcontroller. Hence, this can be used both for domestic and commercial purposes. The unit does not eject any harmful gases. Therefore, the heat expelled from the unit can be tapped for heating utilities, making the use of this device versatile in its application. Thus this proposal aims not only at reducing the air pollutants by not contributing to it but also at reducing the power consumption.

关键词： low power eco-friendly multipurpose TEC-12706 Peltier effect microcontroller (P89V51RD2BN) temperature control

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Removal and recovery of toxic nanosized Cerium Oxide using eco-friendly Iron Oxide Nanoparticles

Kanha Gupta, Nitin Khandelwal, Gopala Krishna Darbha

《环境科学与工程前沿（英文）》 2020年第14卷第1期 doi: 10.1007/s11783-019-1194-4

摘要： Eco-friendly IONPs were synthesized through solvothermal method. IONPs show very high removal efficiency for CeO2 NPs i.e. 688 mg/g. Removal was >90% in all synthetic and real water samples. >80% recovery of CeO2 NPs through sonication confirms reusability of IONPs. Increasing applications of metal oxide nanoparticles and their release in the natural environment is a serious concern due to their toxic nature. Therefore, it is essential to have eco-friendly solutions for the remediation of toxic metal oxides in an aqueous environment. In the present study, eco-friendly Iron Oxide Nanoparticles (IONPs) are synthesized using solvothermal technique and successfully characterized using scanning and transmission electron microscopy (SEM and TEM respectively) and powder X-Ray diffraction (PXRD). These IONPs were further utilized for the remediation of toxic metal oxide nanoparticle, i.e., CeO2. Sorption experiments were also performed in complex aqueous solutions and real water samples to check its applicability in the natural environment. Reusability study was performed to show cost-effectiveness. Results show that these 200 nm-sized spherical IONPs, as revealed by SEM and TEM analysis, were magnetite (Fe3O4) and contained short-range crystallinity as confirmed from XRD spectra. Sorption experiments show that the composite follows the pseudo-second-order kinetic model. Further R2>0.99 for Langmuir sorption isotherm suggests chemisorption as probable removal mechanism with monolayer sorption of CeO2 NPs on IONP. More than 80% recovery of adsorbed CeO2 NPs through ultrasonication and magnetic separation of reaction precipitate confirms reusability of IONPs. Obtained removal % of CeO2 in various synthetic and real water samples was>90% signifying that IONPs are candidate adsorbent for the removal and recovery of toxic metal oxide nanoparticles from contaminated environmental water samples.

关键词： Adsorption toxic metal oxide remediation eco-friendly IONP Iron oxide CeO₂ removal

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Formic acid dehydrogenation reaction on high-performance PdAu alloy nanoparticles prepared by the eco-friendly

《能源前沿（英文）》页码 751-762 doi: 10.1007/s11708-023-0895-3

摘要： Dehydrogenation of formic acid (FA) is considered to be an effective solution for efficient storage and transport of hydrogen. For decades, highly effective catalysts for this purpose have been widely investigated, but numerous challenges remain. Herein, the Pd_xAu_1−x (x = 0, 0.2, 0.4, 0.5, 0.6, 0.8, 1) alloys over the whole composition range were successfully prepared and used to catalyze FA hydrogen production efficiently near room temperature. Small PdAu nanoparticles (5–10 nm) were well-dispersed and supported on the activated carbon to form PdAu solid solution alloys via the eco-friendly slow synthesis methodology. The physicochemical properties of the PdAu alloys were comprehensively studied by utilizing various measurement methods, such as X-ray diffraction (XRD), N₂ adsorption–desorption, high angle annular dark field-scanning transmission electron microscope (HAADF-STEM), X-ray photoelectrons spectroscopy (XPS). Notably, owing to the strong metal-support interaction (SMSI) and electron transfer between active metal Au and Pd, the Pd_0.5Au_0.5 obtained exhibits a turnover frequency (TOF) value of up to 1648 h⁻¹ (313 K, n_Pd+Au/n_FA = 0.01, n_HCOOH/n_HCOONa = 1:3) with a high activity, selectivity, and reusability in the FA dehydrogenation.

关键词： FA dehydrogenation face-centred cubic structures PdAu solid solution alloy nanoparticles slow synthesis methodology SMSI effect

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煤炭高效洁净化利用的研究

陈吟颖,王淑娟,陈昌和,徐旭常

《中国工程科学》 2011年第13卷第6期页码 51-56

摘要：

通过分析我国目前煤炭利用的主要方式和存在的问题，分析对比国内外煤炭高效洁净化利用技术，研究高效洁净化利用技术对环境的影响程度，建立了煤炭高效洁净化利用指标体系，给出了评价煤炭高效洁净化利用程度的洁净化度、生态优化度、低碳度的概念并作出了相应的定量判据，最后提出了我国2030年、2050年煤炭高效洁净化利用的有效途径和发展战略。

关键词：洁净煤发电洁净化度能源可持续发展综合指标生态优化度低碳度

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清洁煤电大气污染物近零排放技术与工程应用 Article

王树民

《工程（英文）》 2020年第6卷第12期页码 1408-1422 doi: 10.1016/j.eng.2019.10.018

摘要：

我国能源以煤为主，发电是煤炭消费第一大户。针对煤电大气污染物排放带来的严峻生态环境问题，本文开展了清洁煤电近零排放技术研究与工程实践，评估了近零排放机组长周期运行状态，并探究了重金属汞协同和专门控制技术。结果表明，提出的近零排放技术路线煤质适应性强，应用到全国101台燃煤机组，大气污染物烟尘、SO₂、NO_x排放浓度低于燃气发电排放限值，长周期运行时排放浓度小时均值达标率超过99%，发电成本增加约0.01 元·(kW·h)^–1。污染物总排放量降低约90%，有效改善了环境空气质量。近零排放机组汞排放浓度为0.51~2.89 μg·m^–3，投运改性飞灰（MFA）专门脱汞系统，汞排放浓度可低至0.29 μg·m^–3，相同脱除效果下运行成本仅为国际主流活性炭脱汞的10%~15%。通过50 000 m³·h^–1燃煤烟气中试平台研究，掌握了多污染物脱除过程中相互影响规律，形成了排放达到不同浓度限值的解决方案；结合示范应用，提出并实现了新的近零排放煤电“1123”生态环保排放限值，即烟尘、SO₂、NO_x和汞及其化合物排放浓度分别不高于1 mg·m^–3、10 mg·m^–3、20 mg·m^–3和3 μg∙m^–3，为“提高污染排放标准”提供了工程技术支撑。

关键词：清洁煤电大气污染物近零排放中试平台 “1123”生态环保排放限值

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Two-dimensional numerical and eco-toxicological modeling of chemical spills

Suiliang HUANG, Yafei JIA, Sam S. Y. WANG

《环境科学与工程前沿（英文）》 2009年第3卷第2期页码 178-185 doi: 10.1007/s11783-009-0020-9

摘要： The effects of chemical spills on aquatic non-target organisms were evaluated in this study. Based on a review of three types of current eco-toxicological models of chemicals, i.e., ACQUATOX model of the US-EPA, Hudson River Model of PCBs, and critical body residual (CBR) model and dynamic energy budget (DEBtox) model, this paper presents an uncoupled numerical eco-toxicological model. The transport and transformation of spilled chemicals were simulated by a chemical transport model (including flow and sediment transport), and the mortalities of an organism caused by the chemicals were simulated by the extended threshold damage model, separately. Due to extreme scarcity of data, this model was applied to two hypothetical cases of chemical spills happening upstream of a lake. Theoretical analysis and simulated results indicated that this model is capable of reasonably predicting the acute effects of chemical spills on aquatic ecosystems or organism killings.

关键词： chemical spills acute effects aquatic ecosystem eco-toxicological modeling

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Special issue: Resource-saving and environment-friendly (two oriented) engineering management and decision

Xiaohong CHEN, Jinnan WANG, Shenggang REN

《工程管理前沿（英文）》 2019年第6卷第4期页码 463-466 doi: 10.1007/s42524-019-0078-4

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On eco-planning for an eco-demonstration park (EDP) and sustainability

WANG Xiangrong, YONG Yi, ZHANG Hao, WANG Pingjian, WANG Shoubing, CHEN Weizhen, WANG Shixiong, HO Hing Hon

《环境科学与工程前沿（英文）》 2008年第2卷第2期页码 178-186 doi: 10.1007/s11783-008-0029-5

摘要： The background, concept, connotation, principles, and methods of eco-planning for an Eco-Demonstration Park (EDP) and sustainability were examined based on a case study of the Luhua EDP in the Chongming Island of Shanghai, China, which is an important part of Shanghai Eco-city planning and construction in the 21st century. By analyzing natural, social and economic conditions, calculating population using the land capacity eco-model, eco-function zoning, and eco-construction, an innovative eco-industrial structure and technical chain were formulated. A comprehensive eco-planning scheme for the EDP was proposed, including planning and management strategies for subsystems of efficient industry, good quality human settlement, high standard eco-construction and eco-tourism as well as effective environmental protection and attractive landscape. The EDP should be an area with coordinated and sustainable economic, social and environmental subsystems. Eco-planning for the EDP should be a very important part of eco-city planning and sustainability. The paper aims to set up a theoretical framework and practical basis for eco-planning and promoting harmony between human and nature.

关键词： connotation Eco-Demonstration environmental protection settlement management

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friendly"> Engineering of Ecological Civilization Construction by Building "Resource-conserving and Environment-friendly

Chen Xiao-hong,Zhou Zhi-yu

《工程管理前沿（英文）》 2014年第1卷第1期页码 83-88 doi: 10.15302/J-FEM-2014012

摘要： The research elaborated the internal connections between the construction of ecological civilization and "Resource-conserving and Environment-friendly Society", introduced the practice and achievements of promoting the construction of Ecological Civilization in the National Synthetically Reform Pilot Zone of the "Resource-conserving and Environment-friendly Society" in Chang-Zhu-Tan(C-Z-T) City Cluster, which is focusing on the establishment of standard system, the promotion of reform in ten key areas, the construction of ten key environmental projects, and the promotion of ten low-carbon clean technologies. Based on this, the research pointed out structural and institutional obstacles and problems in further promoting the construction of "Resource-conserving and Environment-friendly Society" and Ecological Civilization. Finally, focusing on reform and innovation, the research provided suggestions to deepen the reform of the construction of "Resource-conserving and Environment-friendly Society" and Ecological Civilization in four aspects, such as dividend of institution, dividend of nomocracy, dividend of development, and dividend of market.

关键词： Ecological Civilization

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生态县生态市生态省建设规划编制导则

卞有生,何军,张文国

《中国工程科学》 2004年第6卷第11期页码 1-7

摘要：

指导和规范生态县、生态市、生态省建设规划的编制，研究制定了本导则。导则明确指出生态省、生态市、生态县建设的实质是可持续发展能力建设，主要内容包括生态经济、生态环境、生态社会和生态文化四个方面。导则在阐述建设规划的内涵、意义和要求的基础上，提出了规划必须包括的内容以及规划编制的程序、方法、手段和审批程序。导则适用于全国各地生态县、生态市、生态省建设规划的编制，同时供审查规划和检查、考核建设成效时使用。

关键词：生态省生态市生态县规划导则

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生态省生态市及生态县标准研究

卞有生,何军

《中国工程科学》 2003年第5卷第11期页码 18-24

摘要：

生态省、生态市、生态县建设的实质是可持续发展能力建设。其主要内容包括生态经济、生态环境和生态社会三个方面，文章建立的标准基本上反映这三个方面的建设现状和发展潜力。生态省标准由5项基本条件和22项考核指标组成；生态市标准由5顶基本条件和30项考核指标组成；生态县标准由5项基本条件和38项考核指标组成。适用于不同规模、不同区域生态省、市、县建设的标准，同时也可以做为引导生态省、市、县建设的方向和目标。

关键词：生态省生态市生态县指标体系可持续发展

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Industrial Greening of the Dongting Lake Eco-economic Zone

Da-yuan Li,Min Huang

《工程管理前沿（英文）》 2015年第2卷第3期页码 228-233 doi: 10.15302/J-FEM-2015047

摘要： Extensive industrial development is a major challenge to ecological civilization construction. Industrial energy consumption and environmental pollution reduction are desperately needed. The Dongting Lake district, located in Wuhan and the Changsha-Zhuzhou-Xiangtan (CZT) pilot zone, bears the responsibility to ensure national food security and watershed ecological security, and it is an urgent need for the Dongting Lake district to accept the ecological transition of industries. On the analysis of the industrial development status and problems of the Dongting Lake district, some proposals based on the characteristics and reality of the district are pointed out, such as industrial cooperation, proper space layout, ecological innovation, industrial structure upgrading, building of ecological parks, clean production, elimination of backward production capacity, heavy metals governance and so on, as to develop the industrial ecology of the Dongting Lake district.

关键词： industrial greening changing patterns of development ecological civilization regional collaboration the Dongting Lake Eco-economic Zone

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Distribution and potential ecological risk of heavy metals in the typical eco-units of Haihe River Basin

Jingling LIU,Tao YANG,Qiuying CHEN,Feng LIU,Binbin WANG

《环境科学与工程前沿（英文）》 2016年第10卷第1期页码 103-113 doi: 10.1007/s11783-014-0686-5

摘要： The distribution and characteristics of seven heavy metals in sediments located in the typical ecological units (eco-units) (e.g., rivers, lakes, and estuaries) of Haihe River Basin were analyzed. The Hakanson potential ecological risk index was used for ecological risk assessment. The results indicated that the concentration scales of As, Hg, Cr, Cd, Pb, Cu, and Zn in the eco-units were 2.08 to 24.80 mg·g , 0.01 to 1135.50 mg·g , 28.70 to 152.73 mg·g , 0.03 to 195765.83 mg·g , 8.65 to 157.82 mg·g , 6.47 to 178.61 mg·g , and 21.09 to 1076.25 mg·g , respectively. The maximum concentrations of Hg, Cd, and Zn showed higher levels than other water bodies around the world. Hg and Cd have high concentrations in Zhangweinanhe River (1135.50 and 195765.83 mg·g , respectively) and Haihe Estuary (790.50 and 548.47 mg·g , respectively). According to the ecological factor, Cd and Hg showed very strong ecological risks. The seven heavy metals, namely, Cd, Hg, As, Cr, Pb, Cu, and Zn, exhibited ecological risk levels in descending order. Based on the potential ecological risk index, Luanhe River and Baiyangdian Lake had moderate ecological risks, whereas every site in Zhangweinanhe River and Haihe Estuary had substantial risk levels. The risk order of the typical eco-units are as follows: Zhangweinan River (2278345.68)>Estuary (161914.74)>Luanhe River (191.54)>Baiyangdian Lake (120.95). These results provided a scientific basis for water environment improvement and risk management of the Haihe River Basin.

关键词： Haihe River Basin ecological risk eco-units heavy metals

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中国农业生态工程的主要技术类型

卞有生

《中国工程科学》 1999年第1卷第2期页码 83-86

摘要：

农业生态工程是生态农业建设的重要内容，是实施生态农业建设的重要措施和技术手段。其实质是应用生态学原理，结合系统工程方法和现代技术手段，建立农业资源高效利用的生产方式和实施农业可持续发展的技术体系。作者在理论研究和多年实践的基础上，系统总结、介绍了当前我国农业生态工程10种主要的技术类型：充分利用空间和土地资源的农林立体结构生态系统；物质能量多层分级利用系统；水陆交换的物质循环生态系统；相互促进的生物物种共生生态系统；农-渔-禽水生生态系统；多功能的污水自净工程系统；山区综合开发的复合生态系统；沿海滩涂和荡滩资源开发利用的湿地生态系统；以庭院经济为主的院落生态系统；多功能的农副工联合生态系统。

关键词：农业生态工程生态农业技术类型

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Quantitative standard of eco-compensation for the water source area in the middle route of the South-to-North

Zhanfeng DONG, Jinnan WANG

《环境科学与工程前沿（英文）》 2011年第5卷第3期页码 459-473 doi: 10.1007/s11783-010-0288-9

摘要： The Middle Route Project(MRP) of the South-to-North Water Transfer Scheme (SNWT) in China will require a very large financial expenditure to ensure the water supply and the associated water quality to northern China. An eco-compensation mechanism between the water service source areas and its beneficiaries is essential. This paper establishes an analytic framework of eco-compensation standard for the protection of the water source area, including both the calculation of eco-compensation based on opportunity cost method (OCM) and calculation of the burden sharing of eco-compensation between the water source area and the external water reception area based on the deviation square method (DSM). Taking Shiyan City, Hubei Province in China as a case study, our results show that the eco-compensation in the first-phase of MRP for the water source area in Shiyan, Hubei Province should be 1.63×10 CNY, about four times of planned eco-construction investment budget(4.33×10 CNY). In addition, the burden sharing of eco-compensation varied greatly in terms of different methods. It would be better to integrate the results of different single-factor burden sharing methods by determining the corresponding weighting coefficient with DSM and form one unanimous consent result by the interested parties.

关键词： the South-to-North Water Transfer Scheme eco-compensation standard opportunity costs deviation square method