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中国金属铂的物质流分析

科技导报 2024年第4期42卷 102-109页

作者：刘思杰李金惠耿涌曾现来清华大学环境学院北京100084 上海交通大学环境科学与工程学院上海200240

作为矿产初级产品,铂是重要的战略矿产资源,主要应用在汽车、首饰、化工等领域。构建了2016—2020年中国铂动态物质流分析模型,对铂的人为流动和社会库存进行了定量评估;根据部门消费法选取汽车行业,基于Weibull分布对铂的报废量进行测... 详细信息

作为矿产初级产品,铂是重要的战略矿产资源,主要应用在汽车、首饰、化工等领域。构建了2016—2020年中国铂动态物质流分析模型,对铂的人为流动和社会库存进行了定量评估;根据部门消费法选取汽车行业,基于Weibull分布对铂的报废量进行测算,提出铂的可持续发展和资源管理政策建议。结果显示:(1)中国铂矿产量少且品位低,铂矿可用储量、产量均下降,全国铂平均品位仅为0.341 g/t;(2)铂的消费量和进口依赖度逐年上升,首饰行业是需求最大的产业,汽车行业铂的存量和报废量也快速增加。分析表明,中国未来铂资源回收潜力巨大,因此,需要对含铂产品使用后的回收管理体系进行改进,加强铂二次资源的回收利用,从而减少铂的进口依赖程度成为当务之急。

关键词：铂物质流分析回收利用报废量

中国澳门废弃电器电子产品产生特性及资源回收潜力评估

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环境工程学报 2024年第3期18卷 848-856页

作者：何希曾现来盛妮蔡铠涵宋庆彬澳门科技大学创新工程学院澳门环境研究院澳门海岸带生态环境国家野外科学观测研究站中国澳门特别行政区999078 清华大学环境学院北京100084 澳门科技大学商学院中国澳门特别行政区999078

废弃电器电子产品(waste electrical and electronic equipment,WEEE)是重要的“城市矿产”之一,识别WEEE资源回收潜力及经济价值,可为澳门特区制定高效管理及循环处理政策提供基础数据及科学支撑。运用消费使用模型、市场供给模型,定... 详细信息

废弃电器电子产品(waste electrical and electronic equipment,WEEE)是重要的“城市矿产”之一,识别WEEE资源回收潜力及经济价值,可为澳门特区制定高效管理及循环处理政策提供基础数据及科学支撑。运用消费使用模型、市场供给模型,定量分析了2000—2050年澳门特区EEE(electrical and electronic equipment)的存量、废弃回收潜力及经济价值,结合澳门特区的WEEE回收及管理现状提出了相应的改善建议。研究表明,(1)随着澳门特区的发展,EEE的保有量不断增长,由2000年的325.2×10^(4)台增长到2050年的874.8×10^(4)台,年平均增长率为3%左右,增长高峰期出现在2011—2015年(15.6%~16.5%)。(2)澳门特区WEEE的产生量在2000—2014年呈超6%快速增长趋势,2015—2020增势减缓到约为4%,预计未来2021—2050年增长趋势趋向平稳,年产生总量维持在120×10^(4)台以上。废弃通讯和信息设备在所有WEEE中增速最快,2050年的报废量相比2000年增加了14.5倍。(3)澳门特区WEEE资源潜力自2014年起增势稳定,年产生量超过8000 t。其中,铁,铝,铜等基础金属贡献了总可回收资源量的70%以上。(4)WEEE可回收资源总经济价值超过4×10^(7)美元,大型家电、信息和通讯设备、多媒体设备占总回收价值的约99%;金和铜的可回收价值最高,占回收价值总量超过66%。(5)当前,澳门特区仅有10%的WEEE进入政府主导的正规回收企业,未来仍需要进一步改善回收现状。澳门特区WEEE进入快速报废阶段,但本地回收率及处理能力有待提升。识别澳门特区WEEE产生情况、加大WEEE回收力度、健全资源循环利用体系,有望缓解澳门特区废物处置压力,促进澳门特区绿色循环性社会建设。

关键词：废弃电器电子产品产生特性回收潜力澳门特别行政区

Evaluation of global niobium flow modeling and its market forecasting

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Frontiers in Energy 2023年第2期17卷 286-293页

作者： Mahmoud BAKRY Jinhui LI xianlai zeng School of Environment Tsinghua UniversityBeijing 100084China

Metal,as the indispensable material,is functioning the society from technology to the ***(Nb)is considered a unique earth metal as it is related to many emerging *** increasing economic growth exerts an increasing pressure on supply,which leads to its significance in the economic ***,few papers have addressed Nb sustainability,which forms the scope of this paper in order to start the process of Nb market forecasting based on some previous data and some ***,this paper will discuss different thoughts in material substitution and the substance flow of Nb throughout a static flow using Nb global data to have a better understanding of the process of Nb from production to end of *** shall lead to the identification of the market needs to determine its growth which is around 2.5% to 3.0%.Moreover,due to China’s huge Nb consumption which comes from the continuous development that is happening over the years,it will also briefly mention the Nb situation as well as its growth which according to statistics will grow steadily till 2030 by a rate of 4.0% to 6.0%.The results show that there should be some enhancement to Nb recycling potentials out of steel *** addition,there should be more involvement of Nb in different industries as this would lead to less-used materials which can be translated to less environmental impact.

关键词： niobium(Nb) sustainability substance flow analysis recycling industrial ecology

Spent rechargeable lithium batteries in e-waste： composition and its implications

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Frontiers of Environmental Science & Engineering 2014年第5期8卷 792-796页

作者： xianlai zeng Jinhui LI State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China

The amount of spent rechargeable lithium batteries （RLBs） is growing rapidly owing to wide application of these batteries in portable electronic devices and electric vehicles, which obliges that spent RLBs should be handled properly. Identification of spent RLBs can supply fundamental information for spent RLBs recycling. This study aimed to determine the differences of physical components and chemical compositions among various spent RLBs. All the samplings of RLBs were rigorously dismantled and measured by an inductive coupled plasma atomic emission spectrometer. The results indicate that the average of total weight of the separator, the anode and the cathode accounted for over 60% of all the RLBs. The weight ratio of valuable metals ranged from 26% to 76%, and approximately 20% of total weight was Cu and Al. Moreover, no significant differences were found among different manufacturers, applications, and electrolyte types. And regarding portable electronic devices, there is also no significant difference in the Co-Li concentration ratios in the leaching liquid of RLBs.

关键词： rechargeable lithium batteries e-waste physical components difference analysis recycling

Eco-districts in France:What tools to ensure goals achievement?

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Science China Earth Sciences 2020年第6期63卷 865-874页

作者： Kathleen BOQUET Charline FROITIER Jinhui LI Kaihua XU xianlai zeng State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Higher Institute for Environmental Engineering and Management MINES ParisTechParis Cedex 06France GEM Company Limited Shenzhen 518101China

Globally,to build cities and communities more inclusive,safe,resilient and sustainable is one of the most important sustainable development ***-districts in cities emerged as an answer to current global environmental concerns and have been developed in France since the *** objective of this work is to gather operational feedback from sustainable neighborhood projects owners to better understand the key barriers of such projects and how to overcome them.A case study of the eco-district Les Tanneries,Lingolsheim showed that the carbon footprint of each inhabitant annually amounted to 4 tons CO2 equivalent,more than half of the French *** for improvements were clearly identified regarding transports and food carbon *** for energy consumption,social diversity and density reached the level of the eco-districts average.A governance review pointed out some superior practices such as the formalization of a specification requirements handbook,a competition between project management teams,and the use of neighborhood sustainability assessment tools to measure and track changes in *** validated tools and obtained results can be useful in building sustainable cities and even China’s ecological civilization.

关键词： Geography and environment City management Eco-district Sustainability Assessment France

Win-Win:Anthropogenic circularity for metal criticality and carbon neutrality

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Frontiers of Environmental Science & Engineering 2023年第2期17卷 111-122页

作者： xianlai zeng State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

Resource depletion and environmental degradation have fueled a burgeoning discipline of anthropogenic circularity since the *** generally consists of waste reuse,remanufacturing,recycling,and *** economy and“zero-waste”cities are sweeping the globe in their current practices to address the world’s grand concerns linked to resources,the environment,and ***,metal criticality and carbon neutrality,which have become increasingly popular in recent years,denote the material's feature and state,*** goal of this article is to determine how circularity,criticality,and neutrality are *** anthropogenic circularity has the potential to expand the metal supply and,as a result,reduce metal *** barely accomplished 15%of its potential emission reduction by recycling iron,copper,and *** circularity has a lot of room to achieve a win-win objective,which is to reduce metal criticality while also achieving carbon neutrality in a near closed-loop *** barriers or challenges for conducting anthropogenic circularity are deriving from the inadequacy of life-cycle insight governance and the emergence of anthropogenic circularity *** flow analysis and life cycle assessment are the central methodologies to identify the hidden *** processing and smelting,as well as end-of-life management,are indicated as critical priority areas for enhancing anthropogenic circularity.

关键词： Anthropogenic circularity Material flow analysis Criticality Carbon neutrality Solid waste Circular economy

多重视角下工业固体废物资源化利用路径优化——以铜冶炼渣为例

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环境工程技术学报 2024年第5期14卷 1580-1588页

作者：黄文博杨桂蓉韩雪萌王军强蔡文倩李金惠曾现来生态环境部土壤与农业农村生态环境监管技术中心清华大学环境学院国家黄河流域生态保护和高质量发展联合研究中心

为降低工业固体废物处理处置过程对环境和气候变化影响,提高资源利用率,基于环境资源交互属性、生命周期评价和有价资源价值评估3项指标,建立多维度工业固体废物资源化利用路径优化方法。结果表明:通过升级回收和降级回收的资源化途径,... 详细信息

为降低工业固体废物处理处置过程对环境和气候变化影响,提高资源利用率,基于环境资源交互属性、生命周期评价和有价资源价值评估3项指标,建立多维度工业固体废物资源化利用路径优化方法。结果表明:通过升级回收和降级回收的资源化途径,工业固体废物的生态毒性和人体健康毒性较填埋途径分别降低96.86%和98.53%,能够减少土壤污染,维护土壤生态安全。预计2035年铜冶炼渣升级回收、降级回收和原级回收的比例分别达到30%、50%和10%时,可以实现最优目标,但升级回收占比的提高会导致碳排放升高和综合效益下降。研究结果表明,短期内降级回收能够大规模消纳工业固体废物,但受到建筑行业和产品质量管理制约。因此,远期规划需合理分配工业固体废物资源化途径占比,以获得最大化环境效益和经济效益。

关键词：工业固体废物资源化碳排放土壤污染路径优化

Comparing the costs and benefits of virgin and urban mining

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Journal of Management Science and Engineering 2022年第1期7卷 98-106页

作者： xianlai zeng Tongxin Xiao Guochang Xu Eva Albalghiti Guijuan Shan Jinhui Li State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China School of Forestry and Environmental Studies Yale UniversityNew HavenCT06511USA

Resource and environmental management are shaping our society and *** mining is rapidly becoming unsustainable as primary resources are in increasingly short supply and energy consumption continues to *** mining through a circular economy has emerged as a promising option for securing copper and aluminum ***,the sustainability and viability of this circular economy industry are heavily dependent on its ***,we demonstrate the economic benefits of urban mining for anthropogenic minerals:e-waste,end-of-life vehicles,waste wiring and *** material and cost flows associated with urban mining are deeply *** life cycle cost and cost-benefit analysis,the cost of obtaining one ton of copper or aluminum is found to be,on average,3,000 US$or 1,660 US$,which is significantly lower than the cost of virgin ***,in terms of the costs and benefits,copper may differ tremendously from aluminum depending on the type of anthropogenic *** additional regulations or policies enactment need to reinforce the urban mining and circular economy.

关键词： Circular economy Resource sustainability Cost-benefit analysis Urban mining Virgin mining

Uncovering the evolution of tin use in the United States and its implications

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Frontiers of Environmental Science & Engineering 2021年第6期15卷 281-291页

作者： Congren Yang xianlai zeng Haodong Li Zuyuan Tian Wei Liu Wenqing Qin Jinhui Li School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources Central South UniversityChangsha 410083China

Tin is of key importance to daily life and national security;it is considered an essential industrial *** United States(US)is the world’s largest economy and consumer of natural ***,the analysis of historical tin use in the US is helpful for understanding future tin use trends in the world as a whole and in developing *** series analysis,regression analysis with GDP or GDP/capita,and historical data fitted with logistic and Gompertz models are employed in this *** tin use in the US shows three stages-increase-constant-decrease,as GDP per capita has *** use in the US is negatively correlated with the GDP value added by the manufacturing sector,while the use of tin worldwide and in China continues to increase along with the GDP value added by the manufacturing *** a sigmoid curve can fit the US tin use data well,that use is not directly related to the limited tin reserves or ***,policies,economic restructuring,substitutions,new end-use markets,*** played key roles in the changing tin use *** work contributes to understanding future tin use at both the global and national levels:tin use will continue to increase with GDP at the global level,but use patterns of tin at the national level can be changed through human intervention.

关键词： Tin use GDP Curve fitting Logistic model Gompertz model