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Costs and prices for renewable energy development in industrialized countries and applications to China

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Frontiers of Environmental Science & Engineering 2012年第3期6卷 403-411页

作者： Hugo SALAMANCA miao chang Xin TIAN School of Environment Tsinghua UniversityBeijing 100084China

Developing renewable energy is now becom- ing a hot topic as it is important in dealing with climate change issue and energy supply issue. With the growing demand of energy, it has become urgent to develop the effective policies and measures that would enable people to maintain the living standards. Among all the measures, price is an essential one. In order to evaluate the costs and prices of the electricity from renewable energy sources （RES-E） and their effects to the market, this paper firstly focus on the extra costs of the RES-E by breaking it into four parts, including investment, construction, connection and operation. Then, the policy choices made in some typical industrialized countries are examined to find answers to the problems RES-E can raise. Finally, the choices made in China are examined in comparison to industrialized countries so as to determine how the current situation could be improved.

关键词： renewable energy public policy costs prices renewable portfolio feed-in tariff

From ore to MOF: A case of MIL-100(Fe) production from iron ore concentrates

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Progress in Natural Science:Materials International 2024年第1期34卷 66-73页

作者： miao chang Chiyao Tang Chong-Chen Wang Chen Zhao Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation School of Environment and Energy Engineering Beijing University of Civil Engineering and Architecture

Within this work, iron ore concentrates instead of elemental iron Fe0and iron salts like Fe（NO3）3and FeCl3were selected as iron source to prepare MIL-100（Fe）(labeled as MIL-100（Fe）-ore). The corresponding synthesis cost is reduced to half of the MIL-100（Fe） produced from elemental iron and iron salts. As well, the unreacted iron ore concentrates can be easily separated from the as-prepared MIL-100（Fe）-ore by magnetic to facilitate the purification process, free of the strong acids to wash the residual iron. The as-obtained MIL-100（Fe）-ore with Langmuir surface area up to 2281.6 m2g-1displayed long-term chemical stability. Furthermore, the sorption capacity of MIL-100（Fe）-ore towards malachite green（MG） is up to 522.3 mg g-1at 25℃ and initial pH = 3.2, higher than that of MIL-100（Fe） yielded by conventional hydrothermal process. Finally, the production cost and life cycle assessment of MIL-100（Fe）-ore were compared with other traditional production procedures. The results revealed that our work greatly reduced the synthesis cost and enhanced the environmental sustainability.

关键词： Metal-organic framework Iron ore concentrates Adsorption Life cycle assessment

Analysis of air quality characteristics of Beijing–Tianjin–Hebei and its surrounding air pollution transport channel cities in China

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Journal of Environmental Sciences 2020年第1期32卷 213-227页

作者： Cuicui Xiao miao chang Peikun Guo Meifeng Gu Yang Li School of Environment Tsinghua University

Beijing–Tianjin–Hebei(BTH)and its surrounding areas are very important to air pollution control in *** analyze the characteristics of BTH and its surrounding areas of China,we collected 5,641,440 air quality data from 161 air monitoring stations and 37,123,000 continuous monitoring data from air polluting enterprises in BTH and surrounding cities to establish an indicator system for urban air quality *** results showed that particulate matter with aerodynamic diameters ofchanges in air quality revealed that peaks of PM2.5,PM10 and NO2 appeared from 8:00 to 10:00,while those for O3 appeared at 15:00–16:*** exposure characteristics of the 31 cities showed that six districts in Beijing had the highest air quality population exposure,and that exposure levels in Zhengzhou,Puyang,Anyang,Jincheng were higher than the average of the 31 investigated ***,multiple linear regression revealed a negative correlation between meteorological factors(especially wind and precipitation)and air quality,while a positive correlation existed between industrial pollution emissions and air quality in most of BTH and its surrounding cities.

关键词： Beijing–Tianjin–Hebei Air quality population exposure Seasonal index Hourly change Industrial pollution source emission Meteorology factors

A pillared-layer metal-organic framework for efficient separation of C_(3)H_(8)/C_(2)H_(6)/CH_(4) in natural gas

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Chinese Journal of Chemical Engineering 2022年第2期35卷 10-16页

作者： Pengtao Guo miao chang Tongan Yan Yuxiao Li Dahuan Liu State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China

Metal-organic frameworks(MOFs)have great potentials as adsorbents for natural gas ***,the trade-off between selectivity and adsorption capacity remains a ***,we report a pillared-layer metal-organic framework Ni(HBTC)(bipy)for efficiently separating the C_(3)H_(8)/C_(2)H_(6)/CH_(4) *** experimental results show that the adsorption capacity of C_(3)H_(8) and C_(2)H_(6) on Ni(HBTC)(bipy)are as high as 6.18 and 5.85 mmol·g^(-1),while only 0.93 mmol·g^(-1) for CH_(4) at 298 K and 100 ***,the adsorption capacity of C_(3)H_(8) at 5 kPa can reach an unprecedented 4.52 mmol·g^(-1) and for C_(2)H_(6) it is 1.48 mmol·g^(-1) at 10 *** ideal adsorbed solution theory predicted C_(3)H_(8)/CH_(4) selectivity is as high as 1857.0,superior to most of the reported *** experiment results indicated that material could completely separate the C_(3)H_(8)/C_(2)H_(6)/CH_(4) ***,Ni(HBTC)(bipy)is a promising material for separation of natural gas.

关键词： Adsorption Light hydrocarbons Metal-organic framework Natural gas Selectivity Separation

Development of environmental management system in China’s financial sector

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Frontiers of Environmental Science & Engineering 2008年第2期2卷 172-177页

作者： miao chang Lijuan PENG Shiwen WANG Department of Environmental Science&Engineering Tsinghua UniversityBeijing 100084China Center for Environment and Development Chinese Academy of Social SciencesBeijing 100732China

The establishment of the environmental management system in the financial sector can be effectively promoted through the introduction of the environmental protection concept and its implementation by the financial *** impact of a sustainable development system on the sector is analyzed in this article from three aspects:environmental risk assessment,financing support for environmental protection projects,and financial services to environmentally friendly corporations and *** factors on the development of the environmental management system in China’s financial sector are discussed from the perspective of various entities such as financial institutions,financial regulation authorities,environmental protection departments,corporations,and the *** is pointed out that China’s financial sector is now in the transitional phase from a defensive attitude to a preventive *** governmental guidance,the supervision of regulators as well as public awareness of environmental protection should be used to enhance the initiative in the development of the environmental management system in the Chinese financial sector.

关键词： financial sector environmental management environmental risk assessment environmental protection project environmentally friendly behavior

Analysis of driving forces behind diversified carbon dioxide emission patterns in regions of the mainland of China

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Frontiers of Environmental Science & Engineering 2011年第3期5卷 445-458页

作者： Xin TIAN Hidefumi IMURA miao chang Feng SHI Hiroki TANIKAWA Graduate School of Environmental Studies Nagoya UniversityNagoya 464-8601Japan School of Environment Tsinghua UniversityBeijing 100084China

China has large regional disparities in carbon dioxide CO_(2) emissions with economic development among its 31 provincial mainland *** paper investigates these disparities in CO_(2) emission patterns and identifies the factors underlying the *** show that the 30 study China's mainland provinces(Tibet not included)can be divided into seven groups with three typical CO_(2) emission *** decomposition results indicate that changes in economic development,the industrial sector,and technology contribute far more to increased CO_(2) emissions than do population,energy structure,and other *** inspection reveals that different industry structures and technology contribute greatly to the differences observed in CO_(2) emissions between provinces with similar economic *** study highlights the importance of region-specific industrial structure adjustment policies,especially for regions transitioning to heavy industry and for those still in the primary stages of *** potential application of a domestic carbon emissions trading system,to encourage regional investment in updated technology,is also discussed.

关键词： carbon dioxide emission patterns China economic development index decomposition analysis industrialization

Gallium trichloride-catalyzed conjugate addition of indole and pyrrole to α,β-unsaturated ketones in aqueous media

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Chinese Chemical Letters 2009年第6期20卷 676-679页

作者： Rong Xu Jin chang Ding Xi An Chen miao chang Liu Hua Yue Wu Wenzhou Vocational and Technical College Wenzhou 325035 PR China College of Chemistry and Materials Science Wenzhou University Wenzhou 325027 PR China

Michael addition of indole and pyrrole to a variety of α, β-unsaturated ketones was efficiently promoted by a catalytic amount of GaCl3 in aqueous media to afford the corresponding products in good to excellent yields.

关键词： Gallium trichloride Michael addition Indole Pyrrole α, β-Unsaturated ketones

Three-dimensional structural Cu^(6)Sn_(5)/carbon nanotubes alloy thin-film electrodes fabricated by in situ electrodeposition from the leaching solution of waste-printed circuit boards

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International Journal of Minerals,Metallurgy and Materials 2023年第6期30卷 1171-1180页

作者： Shuqing Nie Yu Xin Qiuyun Wang Chengjin Liu chang miao Limin Yu Wei Xiao College of Chemistry and Environmental Engineering Yangtze UniversityJingzhou 434023China

Tin-based materials are very attractive anodes because of their high theoretical capacity,but their rapid capacity fading from volume expansions limits their practical applications during alloying and dealloying ***,the improved binder-free tin-copper intermetallic/carbon nanotubes(Cu6Sn5/CNTs)alloy thin-film electrodes are directly fabricated through efficient in situ electrodeposition from the leaching solution of treated waste-printed circuit boards(WPCBs).The characterization results show that the easily agglomerated Cu6Sn5 alloy nanoparticles are uniformly dispersed across the three-dimensional network when the CNTs concentration in the electrodeposition solution is maintained at 0.2 g·L−***,the optimal Cu6Sn5/CNTs-0.2 alloy thin-film electrode can not only provide a decent discharge specific capacity of 458.35 mAh·g^(−1)after 50 cycles at 100 mA·g^(−1)within capacity retention of 82.58%but also deliver a relatively high reversible specific capacity of 518.24,445.52,418.18,345.33,and 278.05 mAh·g^(−1)at step-increased current density of 0.1,0.2,0.5,1.0,and 2.0 A·g^(−1),***,the preparation process of the Cu6Sn5/CNTs-0.2 alloy thin-film electrode with improved electrochemical performance may provide a cost-effective strategy for the resource utilization of WPCBs to fabricate anode materials for lithium-ion batteries.

关键词： tin-copper intermetallic in situ electrodeposition carbon nanotubes anode material lithium-ion battery

High-performance sandwiched hybrid solid electrolytes by coating polymer layers for all-solid-state lithium-ion batteries

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Rare Metals 2021年第11期40卷 3175-3184页

作者： Zhi-Yan Kou Yan Lu chang miao Jie-Qiong Li Cheng-Jin Liu Wei Xiao College of Chemistry and Environmental Engineering Yangtze UniversityJingzhou 434023China School of Mechanical MaterialsMechatronic and Biomedical EngineeringAustralian Institute for Innovative MaterialsInstitute for Superconducting and Electronic MaterialsUniversity of WollongongWollongongNSW 2522Australia

Poly(vinylidenefluoride-co-hexafluoropropylene)(P(VDF-HFP))/Li_(1.3)Al_(0.3)Ti_(1.7)(PO_(4))_(3)(LATP)/P(VDFHFP) sandwiched hybrid solid electrolytes were precisely tailored and successfully fabricated to assemble into allsolid-state lithium-ion batteries,which were systematically evaluated on microstructure,morphology,thermal stability and electrochemical *** sandwiched hybrid solid electrolytes can achieve intimate contact with cathode and anode electrodes to present an excellent interfacial ***,the sandwiched hybrid solid electrolytes possess flexible surface,wide electrochemical working window of 4.7 V,high ionic conductivity of 0.763 mS·cm^(-1) and high thermal stability of 460℃,which may contribute to realizing the practical application in all-solid-state lithium-ion *** assembled cells with the hybrid solid electrolytes can quickly stabilize at a specific discharge capacity of 145.4 mAh·g^(-1) at 0.1 C after only 5 cycles and present admirable rate *** addition,morphology characterizations of the sandwiched hybrid solid electrolytes after long-term cycles show a relatively integrated structure coating with a compact LATP *** investigations afford a promising strategy that the sandwiched hybrid solid electrolytes can overcome the mechanical limitations of the interface between electrodes and inorganic solid electrolytes to provide favorable properties for all-solid-state lithium-ion batteries.

关键词： Sandwiched hybrid solid electrolytes Li_(1.3)Al_(0.3)Ti_(1.7)(PO_(4))_(3) Polymer layer All-solid-state lithium-ion batteries