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Related Experiment Videos

Metal stocks and sustainability.

R B Gordon1, M Bertram, T E Graedel

  • 1Department of Geology and Geophysics, Yale University, P.O. Box 208109, New Haven, CT 06511, USA.

Proceedings of the National Academy of Sciences of the United States of America
|January 25, 2006
PubMed
Summary
This summary is machine-generated.

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Achieving sustainable metal use requires shifting from virgin ore to recycling. Current U.S. copper reserves are balanced between ore, in-use products, and waste, but increasing in-use demand necessitates near-complete recycling for global services.

Area of Science:

  • Materials Science
  • Environmental Science
  • Resource Management

Background:

  • Metal resources are finite, necessitating careful management.
  • The transition from virgin ore extraction to recycling is crucial for sustainability.
  • Understanding metal distribution across lithosphere, in-use products, and waste is key to assessing resource circularity.

Purpose of the Study:

  • To analyze the distribution of metals (copper, zinc, platinum) across different repositories: lithosphere (ore), in-use products, and waste.
  • To evaluate the progress toward a circular economy model based on recycled metals.
  • To project future metal requirements for providing developed-country service levels globally.

Main Methods:

  • Quantitative analysis of metal proportions in the lithosphere, in-use stock, and waste deposits.

Related Experiment Videos

  • Comparative assessment of metal distribution in the U.S. versus global needs.
  • Modeling future metal demand based on service provision.

    • Main Results:

    • In the U.S., copper is currently distributed roughly equally between ore, in-use products, and waste.
    • The quantity of metal in use is steadily increasing.
    • Global provision of current developed-country service levels for copper, zinc, and platinum would necessitate utilizing nearly all available lithosphere ore and achieving near-complete recycling.

    Conclusions:

    • Current metal management practices are insufficient for long-term sustainability.
    • A significant shift towards a circular economy with high recycling rates is imperative.
    • Meeting future global demand for metals at developed-country service levels requires maximizing in-use stock and achieving near-total metal recycling.