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学者姓名：龚先政
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Abstract ：
Mesocarbon microbeads (MCMB) anode material has recieved great social concern as a new material, and the environmental pollution caused by the production process is gradually increasing as also. In this research, energy consumption and carbon emission of MCMB anode material during the whole life cycle were quantified and analyzed. The functional unit was defined as 1 t MCMB anode material. The system boundary included raw material acquisition, energy supply and material production stage. The energy consumption structure of MCMB anode material was analyzed and the key factor of carbon emission was identified. The energy consumption analysis results showed that life cycle energy consumption of 1 t MCMB anode material is 149.37 GJ, the primary energy consumption structure is raw coal (82.82%), crude oil (11.03%) and natural gas (6.15%), and the energy production stage is the main consumer of all stages (energy production, resource production and product transportation), accounting for 80.81% to the total. The results of carbon emission analysis showed that the carbon emission of 1 t of MCMB anode material is 11 824.61 kg CO2 -eq. Electricity, soft pitch and coke oven gas were sensitive to carbon emissions, and adjusting the energy structure of MCMB was effective to reducing carbon emissions. © 2018, Materials Review Magazine. All right reserved.
Keyword ：
Life cycle Life cycle Coal transportation Coal transportation Coal deposits Coal deposits Lithium batteries Lithium batteries Materials handling Materials handling Anodes Anodes Coal industry Coal industry Microbeads Microbeads Gas emissions Gas emissions Carbon Carbon Natural gas transportation Natural gas transportation Petroleum transportation Petroleum transportation Environmental impact Environmental impact Natural gas deposits Natural gas deposits Energy utilization Energy utilization Petroleum analysis Petroleum analysis
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| GB/T 7714 | Gao, Siwen , Gong, Xianzheng , Sun, Boxue . Energy Consumption and Carbon Emission Analysis of Mesocarbon Microbeads Production for Lithium Batteries [J]. | Materials Review , 2018 , 32 (11) : 4022-4026 . |
| MLA | Gao, Siwen 等. "Energy Consumption and Carbon Emission Analysis of Mesocarbon Microbeads Production for Lithium Batteries" . | Materials Review 32 . 11 (2018) : 4022-4026 . |
| APA | Gao, Siwen , Gong, Xianzheng , Sun, Boxue . Energy Consumption and Carbon Emission Analysis of Mesocarbon Microbeads Production for Lithium Batteries . | Materials Review , 2018 , 32 (11) , 4022-4026 . |
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Abstract ：
This study analyzed the environmental impacts due to lead production in China, which is the largest producer and consumer of lead in the world, by the method of life cycle assessment (LCA). Based on the Chinese refined lead smelting process, a process-based life cycle assessment model was established to assess the environmental load of lead production system which includes the processes of mining, beneficiation, smelting, electrorefining and transportation. The result shows that the cumulative consumption of electricity and the cumulative emission of greenhouse gases for the production of 1t of refined lead are 1111.93kWh and 2.06E+03kg CO2 eq, respectively. Smelting process is the largest contributor to the environmental impact load, accounting for 51.16% of the total environmental impact. The environmental category of human toxicity potential(HTP), accounting for 35.26% of the total environmental impact, is the largest contributor between different environmental categories to the total environmental impact, followed by metal depletion potential(MDP) and fossil depletion potential(FDP), accounting for 27.94% and 11.80% of the total environmental impact, respectively. Improving the resource efficiencies of the processes of smelting and beneficiation, and using cleaner energy to generate electricity are the key approaches to reduce the overall environmental impact of lead production in China. © 2019 Trans Tech Publications, Switzerland.
Keyword ：
Beneficiation Beneficiation Life cycle Life cycle Greenhouse gases Greenhouse gases Concentration (process) Concentration (process) Environmental impact Environmental impact Lead smelting Lead smelting
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| GB/T 7714 | Sun, Wanyi , Gong, Xianzheng , Sun, Boxue et al. Life cycle assessment of lead production in China [C] . 2018 : 1123-1129 . |
| MLA | Sun, Wanyi et al. "Life cycle assessment of lead production in China" . (2018) : 1123-1129 . |
| APA | Sun, Wanyi , Gong, Xianzheng , Sun, Boxue , Ding, Qing . Life cycle assessment of lead production in China . (2018) : 1123-1129 . |
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Abstract ：
Tungsten is an important strategic metal and widely used in cemented carbide manufacturing, steel industry, and other economic fields. The amount of tungsten resource consumed in China each year accounts for more than 80% of the world’s annual total consumption. The purpose of this study is to quantify the environmental impact of tungsten production in China through the method of LCA. The result shows that regarding the contributions of impact categories, the normalized value of HTP is the largest one among various impact categories, which accounts for 35.39% of the total environmental impact, followed by AP, PMFP, GWP, MDP, FDP, and POFP, respectively. The results also show that regarding the contributions of production processes, smelting process is the largest contributor to the environmental burden of tungsten production due to the crystallization and calcination reduction occurred in the smelting process consumes a large amount of electricity, followed by mining, beneficiation, and transportation, respectively. The major academic contribution of this paper to the existing literatures is that we employed process-based analysis method which could improve the accuracy of the study and provide practical advices for tungsten enterprises to reduce the environmental impact. © 2019 Trans Tech Publications, Switzerland.
Keyword ：
Steelmaking Steelmaking Carbides Carbides Tungsten Tungsten Life cycle Life cycle Smelting Smelting Environmental impact Environmental impact
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| GB/T 7714 | Lu, Kewei , Gong, Xianzheng , Sun, Boxue et al. Life cycle assessment of tungsten production in China [C] . 2018 : 1137-1143 . |
| MLA | Lu, Kewei et al. "Life cycle assessment of tungsten production in China" . (2018) : 1137-1143 . |
| APA | Lu, Kewei , Gong, Xianzheng , Sun, Boxue , Ding, Qing . Life cycle assessment of tungsten production in China . (2018) : 1137-1143 . |
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Abstract ：
The production process of nature graphite anode material is divided into four stages, namely mining, beneficiation, purification and processing. Carbon emission and energy consumption during the whole process were quantified and analyzed in this study. The energy consumption and pollutant emissions in the production process were calculated in accordance with the method of life cycle assessment, and the carbon emission analysis was conducted by IPCC method. The life cycle energy consumption of 1 ton natural graphite anode material is 112.48GJ, and the processing stage contributes 41.71%. The results show that coke oven gas and raw coal are the main energy consumption in the whole life cycle of natural graphite anode material, which account for 32.33% and 23.41% of the total energy consumption, respectively. Furthermore, the carbon emission of 1 ton of natural graphite anode material is 5315.91kgCO2 -eq, and mainly comes from raw coal and electricity which contribute 23.98% and 20.99% to the total carbon emission respectively, and CO2 is the largest carbon emission contributed 98.69% to total carbon emission. Finally, the carbon emissions are sensitive to the coke oven gas, raw coal, diesel and electricity, and insensitive to fuel oil. © 2018 Trans Tech Publications, Switzerland.
Keyword ：
Coal industry Coal industry Purification Purification Lithium batteries Lithium batteries Anodes Anodes Coke ovens Coke ovens Energy utilization Energy utilization Life cycle Life cycle Industrial ovens Industrial ovens Coke Coke Graphite Graphite Gas emissions Gas emissions Coal Coal Energy conservation Energy conservation
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| GB/T 7714 | Gao, Si Wen , Gong, Xian Zheng , Liu, Yu et al. Energy consumption and carbon emission analysis of natural graphite anode material for lithium batteries [C] . 2018 : 985-990 . |
| MLA | Gao, Si Wen et al. "Energy consumption and carbon emission analysis of natural graphite anode material for lithium batteries" . (2018) : 985-990 . |
| APA | Gao, Si Wen , Gong, Xian Zheng , Liu, Yu , Zhang, Qi Qi . Energy consumption and carbon emission analysis of natural graphite anode material for lithium batteries . (2018) : 985-990 . |
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Abstract ：
As the data intensive method, high quality environmental burden data is an important premise of carrying out materials life cycle assessment (MLCA), and the reliability of data directly influences the reliability of the assessment results and its application performance. Therefore, building Chinese MLCA database is the basic data needs and technical supports for carrying out and improving LCA practice. Firstly, some new progress on database which related to materials life cycle assessment research and development are introduced. Secondly, according to requirement of ISO 14040 series standards, the database framework and main datasets of the materials life cycle assessment are studied. Thirdly, MLCA data platform based on big data is developed. Finally, the future research works were proposed and discussed.
Keyword ：
data acquisition data acquisition LCA database LCA database material life cycle inventory material life cycle inventory big data big data
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| GB/T 7714 | Li, Xiaoqing , Gong, Xianzheng , Liu, Yu . Development and application of basis database for materials life cycle assessment in china [C] . 2017 . |
| MLA | Li, Xiaoqing et al. "Development and application of basis database for materials life cycle assessment in china" . (2017) . |
| APA | Li, Xiaoqing , Gong, Xianzheng , Liu, Yu . Development and application of basis database for materials life cycle assessment in china . (2017) . |
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Abstract ：
External wall thermal insulation system protects the major structure of building effectively. In this study, a student dormitory building with typical external wall thermal insulation system in Beijing was chosen as the research object and the energy consumption analysis was conducted to identify the optimal external thermal insulation system during the whole life cycle. The results show: for brick-concrete buildings, the consumption of clay brick, reinforced concrete and cement mortar account for more than 95% of the total materials consumption, where reinforced concrete contributes most to energy consumption. The external insulation system with similar heat transfer coefficient but consist of different insulation materials mainly affects energy consumption in materials production phase (the difference of building production energy consumption is about 7.2%), while has no significant effect in building operation phase and whole life cycle. With the increase of heat transfer coefficient, the energy consumption decreases in materials production phase, accounting for 16.3%-21.9% of the life cycle energy consumption, increases in building operation phase, accounting for 78.1%-83.7%, and can be neglected in the disposal phase. And there exists an optimization value in building whole life cycle, at which the minimum value of the energy consumption reaches, when the heat transfer coefficient is 0.3W /(m2 • K), equivalent to 127mm EPS insulation thickness or 151mm rock wool insulation thickness. © 2017 Trans Tech Publications, Switzerland.
Keyword ：
Yarn Yarn Brick Brick Walls (structural partitions) Walls (structural partitions) Heat transfer coefficients Heat transfer coefficients Life cycle Life cycle Mineral wool Mineral wool Thermal insulation Thermal insulation Energy conservation Energy conservation Energy utilization Energy utilization Reinforced concrete Reinforced concrete Concrete construction Concrete construction Wool Wool
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| GB/T 7714 | Li, Yao , Gong, Xian Zheng , Zhang, Qing Hua et al. Energy consumption analysis of building with typical external thermal insulation system [C] . 2017 : 1970-1977 . |
| MLA | Li, Yao et al. "Energy consumption analysis of building with typical external thermal insulation system" . (2017) : 1970-1977 . |
| APA | Li, Yao , Gong, Xian Zheng , Zhang, Qing Hua , Shi, Chong Qi . Energy consumption analysis of building with typical external thermal insulation system . (2017) : 1970-1977 . |
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Abstract ：
The environmental impact of Chinese cathode copper production was identified and quantified in the context of pyrometallurgy ical and hydrometallurgical method by life cycle approach. Combined with the situation of copper resources in China, the copper ores mining, mineral processing, transportation and smelting sector, were analyzed in detail. The normalization results shows that abiotic depletion is the largest environmental impact in both Pyro-and hydro-metallurgical methods, which were 28.4 kg Sb eq and 32.0 kg Sb eq, respectively. Electrolytic refining is the key process in hydrometallurgical life cycle environmental burden (50.21%), and the mining process contributed the largest environmental impact (17.94%) in pyrometallurgical process. In addition, the total environmental burden of pyrometallurgical process is 1.15 times of hydrometallurgical process. Pyrometallurgical methods has many environmental impact category which were much higher than hydrometallurgical because of the more use of fossil fuels in smelting process. Based on the life cycle assessment results, the key factors to reduce the overall environmental impact for China’s cathode copper production include optimizing the efficiency of copper resource, and clean energy sources for electricity production. © 2017 Trans Tech Publications, Switzerland.
Keyword ：
Mineral resources Mineral resources Copper metallurgy Copper metallurgy Mineral industry Mineral industry Fossil fuels Fossil fuels Pyrometallurgy Pyrometallurgy Ores Ores Life cycle Life cycle Cathodes Cathodes Environmental impact Environmental impact Antimony metallurgy Antimony metallurgy Hydrometallurgy Hydrometallurgy Copper smelting Copper smelting
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| GB/T 7714 | Li, Hao , Gong, Xian Zheng , Wang, Zhi Hong et al. Life cycle assessment of cathode copper production [C] . 2017 : 2422-2431 . |
| MLA | Li, Hao et al. "Life cycle assessment of cathode copper production" . (2017) : 2422-2431 . |
| APA | Li, Hao , Gong, Xian Zheng , Wang, Zhi Hong , Li, Yao . Life cycle assessment of cathode copper production . (2017) : 2422-2431 . |
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Abstract ：
Foam glass was widely used as a green energy saving material with good performances of light, thermal insulation and sound absorption. Using waste glass as raw material for foam glass production, can not only turn waste into treasure and reduce resource consumption, but also protect the environment. In this article, the foam glass which produced in Jiaxing, China was studied based on the method of life cycle assessment (LCA), and the resources, the energy consumption and the emission of pollutants at the same time were evaluated. The results show that the characterization value of GWP is the largest. The foaming stage is the main contributor which accounts for 79.7%. Similarly, the foaming stage is the major contributor to AP, POCP, EP and HTP .The characterization value of ADP is the smallest. The foaming stage and annealing stage is the main contributor to ADP which account for 43.0%, 49.7% respectively. It has been found that the foaming stage makes the most contribution to the environmental impact. AP, GWP, POCP and EP of the foaming stage are extremely prominent compared to other stages. The authors used the methods of equal weight coefficient and AHP to weight the single indicator. The results show that the environment impact caused by the foaming stage is the largest, then grinding stage and cutting stage follow behind. The environment impact caused by the transportation stage is the smallest. © 2016 Trans Tech Publications, Switzerland.
Keyword ：
Environmental impact; Foam glass; Life cycle assessment Environmental impact; Foam glass; Life cycle assessment
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| GB/T 7714 | Zhang, L.J. , Gong, X.Z. , Tian, Y.L. et al. Analysis of the environmental impact of foam glass [C] . 2016 : 315-320 . |
| MLA | Zhang, L.J. et al. "Analysis of the environmental impact of foam glass" . (2016) : 315-320 . |
| APA | Zhang, L.J. , Gong, X.Z. , Tian, Y.L. , Wang, Z.H. , Gao, F. , Liu, Y. et al. Analysis of the environmental impact of foam glass . (2016) : 315-320 . |
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Abstract ：
With the development of science and technology and industry level, solid wastes are fully utilized. Among which gangue is the solid waste generated in the process of coal mining, its comprehensive utilization rate is more than 60%. Environmental pollution in the process of coal mining is one of the typical environmental problems confronted in China. In this paper, the life cycle inventory (LCI) of gangue was acquired by the method of life cycle assessment and further environmental impact assessment was achieved as well. The results showed that environmental impacts based on allocation of calorific value were greater than that of economic value, and it’s about 3.68 times the impacts assigned by economic value. Therefore allocation of economic value was better. © (2015) Trans Tech Publications, Switzerland.
Keyword ：
Coal mining; Environmental impact; Gangue; Life cycle Coal mining; Environmental impact; Gangue; Life cycle
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| GB/T 7714 | Peng, Z.G. , Gong, X.Z. , Liu, Y. et al. Life cycle inventory of gangue as alternative raw materials [C] . 2015 : 533-538 . |
| MLA | Peng, Z.G. et al. "Life cycle inventory of gangue as alternative raw materials" . (2015) : 533-538 . |
| APA | Peng, Z.G. , Gong, X.Z. , Liu, Y. , Li, C. , Liu, X. . Life cycle inventory of gangue as alternative raw materials . (2015) : 533-538 . |
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Abstract ：
This paper gets two inventories of environmental load of two kinds of gypsum plasterboards by studying the production processes of the natural gypsum board and flue gas desulfurization (FGD) gypsum through life cycle assessment. The results show that the total life cycle environment load of the natural gypsum boardis 6% higher than the FGD gypsum board. Human toxicity effect increases by 72% and the consumption of non-renewable resources is 76% higher than the total life cycle environment load of natural gypsum board.
Keyword ：
natural gypsum board natural gypsum board FGD gypsum board FGD gypsum board life cycle assessment life cycle assessment
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| GB/T 7714 | Peng Zhenguo , Ma Lili , Gong Xianzheng . Comparison of Life Cycle Environmental Impacts between Natural Gypsum Board and FGD Gypsum Board [C] . 2014 : 15-, . |
| MLA | Peng Zhenguo et al. "Comparison of Life Cycle Environmental Impacts between Natural Gypsum Board and FGD Gypsum Board" . (2014) : 15-, . |
| APA | Peng Zhenguo , Ma Lili , Gong Xianzheng . Comparison of Life Cycle Environmental Impacts between Natural Gypsum Board and FGD Gypsum Board . (2014) : 15-, . |
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