Journal
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume 44, Issue 16, Pages 6457-6463Publisher
AMER CHEMICAL SOC
DOI: 10.1021/es100044n
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Funding
- Japan Society for the Promotion of Science [219266]
- Ministry of Education, Science, Sports and Culture [19560817]
- Grants-in-Aid for Scientific Research [19560817] Funding Source: KAKEN
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We present a comprehensive analysis of steel use in the future compiled using dynamic material flow analysis (MFA) A dynamic MFA for 42 countries depicted the global in-use stock and flow up to the end of 2005. On the basis of the transition of steel stock for 2005, the growth of future steel stock was then estimated considering the economic growth for every country. Future steel demand was estimated using dynamic analysis under the new concept of stocks drive flows The significant results follow World steel stock reached 127 billion t in 2005, and has doubled in the last 25 years. The world stock in 2005 mainly consisted of construction (60%) and vehicles (10%). Stock in these end uses will reach 55 billion t in 2050, driven by a 10-fold increase in Asia Steel demand will reach 18 billion t in 2025, then slightly decrease, and rise again by replacement of buildings The forecast of demand clearly represents the industrial shift; at first the increase is dominated by construction, and then, after 2025, demand for construction decreases and demand for vehicles increases instead This study thus provides the dynamic mechanism of steel stock and flow toward the future, which contributes to the design of sustainable steel use
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