气候变化领域集成服务门户(CCPortal): Material efficiency strategies to reducing greenhouse gas emissions associated with buildings, vehicles, and electronics

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DOI	10.1088/1748-9326/ab0fe3
	Material efficiency strategies to reducing greenhouse gas emissions associated with buildings, vehicles, and electronics - A review
	Hertwich E.G.; Ali S.; Ciacci L.; Fishman T.; Heeren N.; Masanet E.; Asghari F.N.; Olivetti E.; Pauliuk S.; Tu Q.; Wolfram P.
发表日期	2019
ISSN	17489318
卷号	14 期号:4
英文摘要	As one quarter of global energy use serves the production of materials, the more efficient use of these materials presents a significant opportunity for the mitigation of greenhouse gas (GHG) emissions. With the renewed interest of policy makers in the circular economy, material efficiency (ME) strategies such as light-weighting and downsizing of and lifetime extension for products, reuse and recycling of materials, and appropriate material choice are being promoted. Yet, the emissions savings from ME remain poorly understood, owing in part to the multitude of material uses and diversity of circumstances and in part to a lack of analytical effort. We have reviewed emissions reductions from ME strategies applied to buildings, cars, and electronics. We find that there can be a systematic trade-off between material use in the production of buildings, vehicles, and appliances and energy use in their operation, requiring a careful life cycle assessment of ME strategies. We find that the largest potential emission reductions quantified in the literature result from more intensive use of and lifetime extension for buildings and the light-weighting and reduced size of vehicles. Replacing metals and concrete with timber in construction can result in significant GHG benefits, but trade-offs and limitations to the potential supply of timber need to be recognized. Repair and remanufacturing of products can also result in emission reductions, which have been quantified only on a case-by-case basis and are difficult to generalize. The recovery of steel, aluminum, and copper from building demolition waste and the end-of-life vehicles and appliances already results in the recycling of base metals, which achieves significant emission reductions. Higher collection rates, sorting efficiencies, and the alloy-specific sorting of metals to preserve the function of alloying elements while avoiding the contamination of base metals are important steps to further reduce emissions. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	cement; circular economy; climate change mitigation; industrial policy; iron and steel; life cycle assessment; resource efficiency
语种	英语
scopus关键词	Alloying elements; Cements; Climate change; Demolition; Economic and social effects; Emission control; Energy utilization; Gas emissions; Greenhouse gases; Metal recovery; Metals; Recycling; Solid wastes; Timber; Vehicles; Circular economy; Climate change mitigation; Industrial policies; Iron and steel; Life Cycle Assessment (LCA); Resource efficiencies; Life cycle; cement (construction material); climate change; economic conditions; emission; emission control; greenhouse gas; industrial policy; iron and steel industry; life cycle analysis; strategic approach
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154610
作者单位	School of Forestry and Environmental Studies, Yale University, New Haven, CT 06511, United States; College of Earth, Ocean and the Environment, University of Delaware, Newark, DE 19716-3501, United States; Department of Industrial Chemistry, University of Bologna, Viale Risorgimento, 4, Bologna, I-40136, Italy; Interdisciplinary Center, Herzliya, Israel; Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208-3109, United States; Department of Material Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; University of Freiburg, Faculty of Environment and Natural Resources, Freiburg, D-79106, Germany
推荐引用方式 GB/T 7714	Hertwich E.G.,Ali S.,Ciacci L.,et al. Material efficiency strategies to reducing greenhouse gas emissions associated with buildings, vehicles, and electronics - A review[J],2019,14(4).
APA	Hertwich E.G..,Ali S..,Ciacci L..,Fishman T..,Heeren N..,...&Wolfram P..(2019).Material efficiency strategies to reducing greenhouse gas emissions associated with buildings, vehicles, and electronics - A review.Environmental Research Letters,14(4).
MLA	Hertwich E.G.,et al."Material efficiency strategies to reducing greenhouse gas emissions associated with buildings, vehicles, and electronics - A review".Environmental Research Letters 14.4(2019).